David M Wasserman

US Patent:

41229240, Oct 31, 1978

Filed:

Jul 28, 1977

Appl. No.:

5/819759

Inventors:

David Wasserman - East Meadow NY

International Classification:

A45C 514

US Classification:

190 18A

Abstract:

A valise or suitcase utilizes a self supporting, height adjustable, wheeled undercarriage, which when not in use is concealed in an open-bottomed compartment at the base of the suitcase.

US Patent:

53421957, Aug 30, 1994

Filed:

Jan 13, 1993

Appl. No.:

8/004098

Inventors:

Warren Davis - Rosemead CA
David Wasserman - Las Vegas NV
Richard R. Mathews - Huntington Park CA

International Classification:

A61G 1702
A61C 110
A61C 112

US Classification:

433 80

Abstract:

Various adaptors are used for securing a replaceable syringe tip in operative relationship to a handpiece body. The syringe tip is mounted on a tapered male connector set in the hollow interior of the adaptor. O ring seals and a metal flange member are used to prevent the leakage of air or water passing from the handpiece into the interior of the adaptor and then into the syringe tip. A captivated thumb nut is utilized to prevent the thumb nut from accidently disengaging completely from the adaptor. When the thumb nut is loosened to replace a syringe tip, the thumb nut will remain captivated on the adapter, only loosening enough to allow removal and insertion of a syringe tip.

US Patent:

51922061, Mar 9, 1993

Filed:

Oct 11, 1990

Appl. No.:

7/596987

Inventors:

Warren Davis - Rosemead CA
David Wasserman - Las Vegas NV
Richard R. Mathews - Huntington Park CA

International Classification:

A61C 1700

US Classification:

433 80

Abstract:

Various adaptors are used for securing a replaceable syringe tip in operative relationship to a handpiece body. The syringe tip is mounted on a tapered male connector set in the hollow interior of the adaptor. O ring seals and a metal flange member are used to prevent the leakage of air or water passing from the handpiece into the interior of the adaptor and then into the syringe tip. A captivated thumb nut is utilized to prevent the thumb nut from accidently disengaging completely from the adaptor. When the thumb nut is loosened to replace a syringe tip, the thumb nut will remain captivated on the adapter, only loosening enough to allow removal and insertion of a syringe tip.

US Patent:

50490710, Sep 17, 1991

Filed:

May 12, 1989

Appl. No.:

7/351431

Inventors:

Warren Davis - Rosemead CA
David Wasserman - Las Vegas NV

International Classification:

A61G 1702

US Classification:

433 80

Abstract:

A clear rigid plastic syringe tip having a central water passageway and three arcuate section air passageways disposed circumferentially about the water passageway. The syringe tip has an extension that mounts the syringe tip into an adaptor which holds the assembly in the handpiece body. Alternatively, the adaptor is provided with a coupling device for joining the syringe tip to the adaptor.

US Patent:

40625583, Dec 13, 1977

Filed:

Jul 19, 1976

Appl. No.:

5/706227

Inventors:

David Wasserman - East Meadow NY

International Classification:

B62K 100

US Classification:

280205

Abstract:

This disclosure pertains to a one wheeled vehicle rotatably affixed to a yoke. One arm of the yoke is provided with a stationary foot rest. The other arm of the yoke contains a rack which when reciprocated operates a gear train causing the wheel to rotate. A platform is secured to the uppermost portions of the rack and is biased upwardly by a spring urging the rack in an uppermost position. A pole extends upwardly from the yoke providing steering control to the apparatus and a balancing aid to the user thereof.

US Patent:

D3523543, Nov 8, 1994

Filed:

Dec 13, 1991

Appl. No.:

7/807573

Inventors:

Warren Davis - Rosemead CA
David Wasserman - Las Vegas NV
Richard R. Matthews - Huntington Park CA

US Classification:

D24112

US Patent:

52363562, Aug 17, 1993

Filed:

Apr 16, 1991

Appl. No.:

7/687039

Inventors:

Warren Davis - Rosemead CA
David Wasserman - Las Vegas NV

International Classification:

A61G 1702

US Classification:

433 80

Abstract:

A clear rigid plastic syringe tip having a central water passageway and three arcuate section air passageways disposed circumferentially about the water passageway. A novel adaptor is used to mount the syringe tip to the handpiece body.