Arthur G Hart

US Patent:

7424847, Sep 16, 2008

Filed:

Feb 17, 2006

Appl. No.:

11/356761

Inventors:

Arthur S. Hart - Anaheim CA, US

International Classification:

F16J 3/02

US Classification:

92 98R

Abstract:

A diaphragm assembly is provided which includes one or more pistons and a frame circumscribing the piston or pistons. The diaphragm assembly is useful with a wobble plate pump. The piston or pistons and frame are made of different materials. For example, the piston is made of a material that has a greater stiffness, hardness or rigidity than the material of which the frame is made. The piston will not undergo substantially ballooning over long term use of the diaphragm assembly.

US Patent:

D2751062, Aug 14, 1984

Filed:

Dec 21, 1981

Appl. No.:

6/332806

Inventors:

Arthur S. Hart - Westminster CA

US Classification:

D15 5

US Patent:

40389111, Aug 2, 1977

Filed:

Dec 29, 1975

Appl. No.:

5/644607

Inventors:

Arthur C. Hart - Buena Park CA

Assignee:

Elixir Industries - Gardena CA

International Classification:

B60H 126

US Classification:

98 214

Abstract:

A multi-directional vent for the ventilation opening of a vehicle includes a vent frame having a vent cover pivoted at its front side to the frame and having an air intake opening in the front of the vent cover. A door is pivoted to the vent cover to selectively close or open the vent cover intake opening. Gear and bell crank operators are provided to pivot the cover about its hinge connection to the frame and to pivot the door about its hinge connection to the cover. The frame is screened and the operators extend through the screen to enable operation from inside the vehicle. With the door open and the vent cover closed a conventional scoop type operation is provided. With the door closed and the vent cover open a conventional pivoted ventilation operation is provided. With both the door and vent cover open ventilation is provided in all directions when the vehicle is at rest, and when in motion a venturi effect is achieved to extract air from the interior of the vehicle.