UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D
                    Under the Securities Exchange Act of 1934
                                (Amendment No. 1)

                       Kronos Advanced Technologies, Inc.
--------------------------------------------------------------------------------
                                (Name of Issuer)

                    Common Stock, $0.001 Par Value Per Share
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    50105X106
--------------------------------------------------------------------------------
                                 (CUSIP Number)

                                    John Lack
                               RS Properties I LLC
                                 40 Wall Street
                                   23rd Floor
                               New York, NY 10005
                                  212-349-3473
--------------------------------------------------------------------------------
            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)

                                 August 8, 2007
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box
|_| .

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).



CUSIP No. 50105X106


                                  SCHEDULE 13D

------------ -------------------------------------------------------------------
     1       NAME OF REPORTING PERSON
             I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

             RS PROPERTIES I LLC
------------ -------------------------------------------------------------------
     2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP            (a) |X|
                                                                         (b) |_|
------------ -------------------------------------------------------------------
     3       SEC USE ONLY

------------ -------------------------------------------------------------------
     4       SOURCE OF FUNDS

             Not applicable
------------ -------------------------------------------------------------------
     5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
             TO ITEMS 2(d) or 2(e)

------------ -------------------------------------------------------------------
     6       CITIZENSHIP OR PLACE OF ORGANIZATION

------------------------- ---------- -------------------------------------------
       NUMBER OF              7      SOLE VOTING POWER
         SHARES
      BENEFICIALLY                   0
        OWNED BY          ---------- -------------------------------------------
          EACH                8      SHARED VOTING POWER
       REPORTING
         PERSON           ---------- -------------------------------------------
          WITH                9      SOLE DISPOSITIVE POWER

                                     0
                          ---------- -------------------------------------------
                             10      SHARED DISPOSITIVE POWER

------------ -------------------------------------------------------------------

    11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

             0
------------ -------------------------------------------------------------------
    12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
             SHARES                                                          |X|

------------ -------------------------------------------------------------------
    13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

             0%
------------ -------------------------------------------------------------------
    14       TYPE OF REPORTING PERSON

             OO
------------ -------------------------------------------------------------------



CUSIP No. 50105X106


Item 1.       Security and Issuer.

The title of the class of equity securities to which this statement relates is
Common Stock, par value $0.001 each ("Common Stock") of Kronos Advanced
Technologies, Inc., a Nevada corporation (the "Issuer"). The principal executive
office of the Issuer is located at 494 Common Street, Suite 301, Belmont, MA
02478.

Item 2.       Identity and Background.

(a) This Statement is being filed by RS Properties I LLC (the "Reporting
Person"). John Lack is the sole officer and manager of the Reporting Person.

(b) The address of the Reporting Person is 40 Wall Street, 26th floor, New York,
New York, 10005.

(c) The Reporting Person is an independent investment fund making investments
in, among other things, real estate and securities.

(d) and (e) The Reporting Person has not, during the last five years, been (a)
convicted in a criminal proceeding (excluding traffic violations or similar
misdemeanors), or (b) a party to a civil proceeding of a judicial or
administrative body of competent jurisdiction as a result of which he or it is
or was subject to a judgment, decree or final order enjoining future violations
of, or prohibiting or mandating activities subject to, federal or state
securities laws or finding any violation with respect to such laws.

Item 3.       Source and Amount of Funds or Other Consideration.

Not applicable.

Item 4.       Purpose of Transaction.

On August 8, 2007, the Reporting Person entered into a Note Assignment Agreement
(the "Assignment Agreement") with Hilltop Holding Company, LP ("Hilltop").
Pursuant to the terms of the Assignment Agreement, the Reporting Person assigned
(a) the $6,480,000 Secured Convertible Promissory Note due June 19, 2010 (the
"Note") made by the Issuer in favor of the Reporting Person, together with all
of the Reporting Person's rights and obligations under (b) the Funding
Agreement, dated June 19, 2010 (the "Funding Agreement"), by and among the
Issuer, AirWorks Funding LLLP ("AirWorks"), Sands Brothers Venture Capital LLC
("Sands I"), Sands Brothers Venture Capital II LLC, ("Sands II"), Sands Brothers
Venture Capital III LLC ("Sands III"), Sands Brothers Venture Capital IV LLC
("Sands IV"), Critical Capital Growth Fund, L.P. ("CCGF", and together with
Sands I, Sands II, Sands III and Sands IV, the "Sands Entities") and the
Reporting Person (AirWorks, Sands I, Sands II, Sands III, Sands IV, CCGF and the
Reporting Person are collectively referred to herein as, the "Lenders"); (c) the
Security Agreement, dated June 19, 2007 (the "Security Agreement"), by and among
the Issuer, Kronos Air Technologies, Inc. (the "Subsidiary") and the Lenders;
(d) the Patent Security Agreement, dated June 19, 2007 (the "Patent Security
Agreement"), by and among the Issuer, the Subsidiary and the Lenders; (e) the
Voting and Support Agreement, dated June 19, 2007 (the "Voting Agreement"), by
and among the Issuer and the Lenders; (f) the Registration Rights Agreement,
dated June 19, 2007 (the "Registration Rights Agreement"), by and among the
Issuer and the Lenders; (g) the Intercreditor Agreement, dated June 19, 2007
(the "Lenders Intercreditor Agreement"), by and among the Lenders; (h) the
Intercreditor Agreement, dated June 19, 2007 (the "Existing Creditors
Intercreditor Agreement"), by and among the Lenders and certain existing
creditors of the Lenders; and (i) the letter agreement, dated June 19, 2007 (the
"Letter Agreement"), by and between AirWorks and the Reporting Person. Each of
the agreements, instruments and documents listed in clauses (a) through (i)
above are collectively referred to herein as the "Transaction Documents"). The
purchase price of the Note and the other Transaction Documents paid by Hilltop
to the Reporting Person was $920,000.00,which amount represented the amount of
the outstanding principal balance of the Note as of the date of the assignment.



CUSIP No. 50105X106


Item 5. Interest in Securities of the Issuer.

(a) As a result of the assignment of the Note and the other Transaction
Documents, the Reporting Person does not beneficially own any shares of Common
Stock.

(b) Not applicable.

(c) Except as set forth in Items 4, no transactions in the Common Stock were
effected by the Reporting Person since the filing of the Schedule 13D by the
Reporting Person on June 29, 2007.

(d) and (e) Not applicable.

Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to
Securities of Issuer.

Reference is made to the disclosure set forth in Item 4 above, which disclosure
is incorporated by reference.

Item 7. Materials to be Filed as Exhibits.

    Exhibit No.       Description
    -----------       -----------
         1.           Note Assignment Agreement, dated August 8, 2007 between
                      the Reporting Person and Hilltop



                                    SIGNATURE

         After reasonable inquiry and to the best of its knowledge and belief,
each of the undersigned certifies that the information set forth in this
statement is true, complete and correct.

Dated: August 10, 2007
                               RS PROPERTIES I LLC

                               By: /s/ John Lack
                                  -----------------------------
                               Name: John Lack
                               Title: Manager



                                                                       Exhibit 1
                            NOTE ASSIGNMENT AGREEMENT

      This Note  Assignment  Agreement (the  "Agreement")  is entered into as of
August 8,  2007,  by and  between,  RS  PROPERTIES  I LLC,  a  Delaware  limited
liability company (the "Assignor"),  and HILLTOP HOLDING COMPANY, LP, a Delaware
limited partnership (the "Assignee").

                                    RECITALS

      WHEREAS, the Assignor desires to sell, transfer and assign to the Assignee
and  Assignee  desires  to  purchase  and  acquire  from  the  Assignor  (a) the
$6,480,000  Secured  Convertible  Promissory Note due June 19, 2010 (the "Note")
made  by  Kronos  Advanced   Technologies,   Inc.,  a  Nevada  corporation  (the
"Borrower"),  in favor of the Assignor, together with (b) the Funding Agreement,
dated  June 19,  2010 (the  "Funding  Agreement"),  by and  among the  Borrower,
AirWorks  Funding  LLLP,  a  Georgia  limited  liability   limited   partnership
("AirWorks"),  Sands Brothers Venture Capital LLC, a New York limited  liability
company ("SBVC I"), Sands  Brothers  Venture  Capital II LLC, a New York limited
liability  company ("SBVC II"),  Sands Brothers  Venture  Capital III LLC, a New
York limited liability  company ("SBVC III"),  Sands Brothers Venture Capital IV
LLC, a New York limited liability  company ("SBVC IV"),  Critical Capital Growth
Fund, L.P., a Delaware limited  partnership  ("CCGF",  and together with SBVC I,
SBVC II, SBVC III and SBVC IV, the "SBVC Entities") and the Assignor  (AirWorks,
SBVC I, SBVC II,  SBVC III,  SBVC IV,  CCGF and the  Assignor  are  individually
referred to herein as, a "Lender" and collectively  as, the "Lenders");  (c) the
Security Agreement, dated June 19, 2007 (the "Security Agreement"), by and among
the  Borrower,  Kronos  Air  Technologies,   Inc.,  a  Nevada  corporation  (the
"Subsidiary") and the Lenders; (d) the Patent Security Agreement, dated June 19,
2007  (the  "Patent  Security  Agreement"),  by  and  among  the  Borrower,  the
Subsidiary and the Lenders; (e) the Voting and Support Agreement, dated June 19,
2007 (the "Voting  Agreement"),  by and among the Borrower and the Lenders;  (f)
the Registration Rights Agreement, dated June 19, 2007 (the "Registration Rights
Agreement"),  by and among the Borrower and the Lenders;  (g) the  Intercreditor
Agreement, dated June 19, 2007 (the "Lenders Intercreditor  Agreement"),  by and
among the Lenders;  (h) the  Intercreditor  Agreement,  dated June 19, 2007 (the
"Existing  Creditors  Intercreditor  Agreement"),  by and among the  Lenders and
certain existing creditors of the Borrower identified therein as the Second Lien
Creditors;  and (i) the  letter  agreement,  dated  June 19,  2007 (the  "Letter
Agreement"),  by and between AirWorks and the Assignor.  Each of the agreements,
instruments  and documents  listed in clauses (a) through (i) above are referred
to herein as a  "Transaction  Document" and  collectively,  as the  "Transaction
Documents")

      NOW,  THEREFORE,  in consideration  of the promises and mutual  agreements
contained herein the parties agree as follows:

      1. Assignment of Note and other Transaction Documents.

            (a)  Assignment.  Assignor  hereby  sells,  transfers,  conveys  and
assigns to the Assignee,  and the Asignee hereby takes, accepts and assumes, all
of the Assignor's rights, obligations and interest in, to and under the Note and
each of the other Transaction  Documents,  together with the Assignor's  rights,
title and interest, if any, in any collateral granted or purported to be granted
to Assignor to secure the obligations of the Company or the Subsidiary as and to
the extent provided in any of the Transaction Documents.



            (b) Purchase Price. In  consideration  of the assignment of the Note
and the Transaction Documents,  Assignee shall pay to the Assignors the purchase
price of Nine  Hundred  Twenty  Thousand  Dollars  ($920,000.00),  which  amount
represents the presently outstanding principal amount of the Note.

            (c) Closing.  The closing of the  transactions  contemplated by this
Agreement (the  "Closing")  shall take place at the offices of the Assignee,  on
such date as the parties may mutually determine. The Closing may be conducted by
mail, facsimile and delivery service.

      2.  Representations  and Warranties of the Assignor.  The Assignor  hereby
warrants and represents to the Assignee, as follows:

            (a) The  Assignor  has all the  requisite  power  and  authority  to
execute,  deliver and perform this  Agreement.  This Agreement  constitutes  the
legal, valid and binding  obligations of the Assignor and is enforceable against
it in accordance with the terms hereof.

            (b) The Assignor owns beneficially and of record,  the Note free and
clear of all liens,  claims and  encumbrances.  Upon delivery of and payment for
the Note at Closing,  as  provided  for in this  Agreement,  the  Assignee  will
acquire good and valid title thereto.

            (c) The Assignor has delivered to the Assignee  complete and correct
copies of each of the Transaction  Documents.  Each of the Transaction Documents
is in full force and effect and  enforceable  against the  Assignor  and, to the
knowledge of the  Assignor,  the other parties  thereto in  accordance  with its
respective  terms,   except  as  the  enforcement  thereof  may  be  limited  by
bankruptcy,  insolvency,  moratorium or similar laws affecting creditors' rights
generally or is subject to the availability of equitable remedies.  The Assignor
has performed the obligations  required to be performed by it to date and is not
in  material  default,  or alleged to be in material  default,  under any of the
Transaction Documents.

      3.  Representations  and Warranties of the Assignee.  The Assignee  hereby
represents and warrants to the Assignor, as follows:

            (a) The  Assignee  has all the  requisite  power  and  authority  to
execute,  deliver and perform this  Agreement.  This Agreement  constitutes  the
legal, valid and binding  obligations of the Assignee and is enforceable against
it in accordance with the terms hereof.

            (b) The Assignee  hereby  acknowledges  that in connection  with the
assignment  of  the  Transaction  Documents,  the  Assignor  has  not  made  any
representations  to it,  and  is  not  relying  on  any  representations  to it,
regarding the Borrower or the financial or business prospects of the Borrower.


            (c) The  Assignee  understands  that an  investment  in the  Note is
extremely  speculative  with a high  degree  of  risk of  loss,  and  there  are
substantial restrictions on the transferability of such note.

            (d) The  Assignee  is  able to (i)  bear  the  economic  risk of his
investment,  (ii) hold the Note,  and (iii) can presently  afford a loss of this
investment.

            (e) The Assignee  confirms that it is acquiring the Note for its own
account and not with a view to distribution  within the meaning of Section 2(11)
of the Securities Act of 1933, as amended (the  "Securities  Act"). The Assignee
hereby acknowledges and confirms that the Note has not been registered under the
Securities  Act or any state  securities or "blue sky" laws and may not be sold,
transferred or otherwise disposed of except in compliance with the provisions of
the Securities Act and the rules and regulations promulgated thereunder and such
state securities or "blue sky" laws.

            (f) The Assignee is an "accredited investor" as such term is defined
in Rule 501 of Regulation D promulgated under the Securities Act.

      4.  Acknowledgement  and  Consent.   This  Agreement  is  subject  to  the
acknowledgement and consent of the Borrower,  the Subsidiary,  AirWorks and each
of the SBVC Entities to the terms contemplated hereby. Such acknowledgements and
consents are evidenced by respective signatures of the Borrower, the Subsidiary,
AirWorks and each of the SBVC Entities in the respective  spaces provided at the
signature  pages  to  this  Agreement.  To the  extent  any  of the  Transaction
Documents prohibit the assignment  thereof,  by the execution of this Agreement,
the Borrower, the Subsidiary,  AirWorks, each of the SBVC Entities, the Assignor
and the Assignee hereby agree that such  Transaction  Document is hereby amended
to permit the  assignment  of such  Transaction  Document by the Assignor to the
Assignee as contemplated hereby.

      5. Miscellaneous.

            (a)  Entire  Agreement.   This  Agreement   constitutes  the  entire
agreement  of the  parties  with  respect  to the  subject  matter  hereof.  The
representations,   warranties,  covenants  and  agreements  set  forth  in  this
Agreement  constitute  all  the  representations,   warranties,   covenants  and
agreements  of the  parties  hereto and upon which the  parties  have relied and
except  as  may  be  specifically  provided  herein.  No  change,  modification,
amendment,  addition or  termination of this Agreement or any part thereof shall
be valid unless it is in writing,  and signed by or on behalf of the party to be
charged therewith.

            (b)  Notices.  Any  and  all  notices  or  other  communications  or
deliveries  required  or  permitted  to be given or made  pursuant to any of the
provisions of this Agreement shall be deemed to have been duly given or made for
all purposes if sent by Federal  Express  delivery or by certified or registered
mail, return receipt requested and postage prepaid or hand delivered as follows:



        If to Assignor:

        RS Properties I LLC
        40 Wall Street
        23rd Floor
        New York, NY 10005
        Attention: John Lack

        If to Assignee:

        Hilltop Holding Company LP
        c/o SIAR Capital LLC
        660 Madison Avenue
        New York, NY 10021
        Attention:  Jack Silver
        Telephone:  (212) 542-8201
        Facsimile:  (212) 542-8212

            (c) Waiver.  No waiver of the  provisions  hereof shall be effective
unless in writing  and signed by the party to be charged  with such  waiver.  No
waiver  shall be  deemed  a  continuing  waiver  or  waiver  in  respect  of any
subsequent breach or default,  either of a similar or different  nature,  unless
expressly so stated in writing.

            (d) Governing Law. This Agreement shall be governed, interpreted and
construed in  accordance  with the laws of the State of New York  applicable  to
contracts to be  performed  entirely  within that State.  Any dispute in any way
related to the subject matter of this Agreement  shall be litigated  exclusively
within the State of New York and all parties hereto, consent to the jurisdiction
of the State and/or United States Federal  District  Courts of New York.  Should
any clause,  section or part of this Agreement be held or declared to be void or
illegal for any reason,  all other clauses,  sections or parts of this Agreement
which can be  affected  without  such  illegal  clause,  section  or part  shall
nevertheless continue in full force and effect.

            (e) Successors and Assigns. This Agreement shall be binding upon and
inure to the benefit of the parties hereto and their  respective  successors and
assigns or heirs and personal representatives.

            (f) Captions.  The headings,  captions or titles of paragraphs under
sections or subsections of this Agreement are for convenience and reference only
and do not in any way modify, interpret or construe the intent of the parties or
effect any of the provisions of this Agreement.

            (g) Counterparts. This Agreement may be executed by fax transmission
and in one or  more  counterparts,  each  of  which  shall  be  deemed  to be an
original, but all of which shall constitute one and the same Agreement.

                            [signature page follows]



         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
      signed on the date and year first above written.

                                           ASSIGNOR:

                                           RS PROPERTIES I LLC

                                           By:   /s/ John Lack
                                              ----------------------------------
                                           Name:     John Lack
                                           Title:    Manager

                                           ASSIGNEE:

                                           HILLTOP HOLDING COMPANY, L.P.

                                           By:    /s/Jack Silver
                                              ----------------------------------
                                           Name:  Jack Silver
                                           Title: General Partner

Acknowledged and consented to:

KRONOS ADVANCED TECHNOLOGIES, INC.

By:  /s/ Richard F. Tusing
   ----------------------------------
Name:    Richard F. Tusing
Title:   Chief Operating Officer

KRONOS AIR TECHNOLOGIES, INC.

By:  /s/ Richard F. Tusing
   ----------------------------------
Name:    Richard F. Tusing
Title:   Chief Operating Officer

AIRWORKS FUNDING LLLP

By:  /s/ Richard E. Perlman
   ----------------------------------
Name:    Richard E. Perlman
Title:   President



SANDS BROTHERS VENTURE CAPITAL LLC

By:  /s/ Scott Baily
   ----------------------------------
Name:    Scott Baily
Title:   COO

SANDS BROTHERS VENTURE CAPITAL II LLC

By:  /s/ Scott Baily
   ----------------------------------
Name:    Scott Baily
Title:   COO

SANDS BROTHERS VENTURE CAPITAL III LLC

By:  /s/ Scott Baily
   ----------------------------------
Name:    Scott Baily
Title:   COO

SANDS BROTHERS VENTURE CAPITAL IV LLC

By:  /s/ Scott Baily
   ----------------------------------
Name:    Scott Baily
Title:   COO

CRITICAL GROWTH FUND, L.P.
By:  Critical Capital, L.P., its General Partner
By:  Critical Capital Corporation, its General Partner

By:  /s/ Charles L. Robinson
   ----------------------------------
Name:    Charles L. Robinson
Title:   President

By:  /s/ Steven B. Sands
   ----------------------------------
Name:    Steven B. Sands
Title:   Chairman