John Paul Rademacher

US Patent:

63256029, Dec 4, 2001

Filed:

Sep 23, 1999

Appl. No.:

9/401708

Inventors:

John J. Rademacher - San Pedro CA

International Classification:

F04C 18344
F04C 2900

US Classification:

418 81

Abstract:

A light-weight vacuum pump has a multi-wiper member circular wiper member support and impeller which is eccentrically mounted within a pump housing. The multi wiper member circular support carries from about five to nine wiper members each mounted within a slot extending substantially the length of the support, with each wiper member being centrifically urged outwardly to wipingly engage an inner surface of a round or elliptical walled pump housing. Eccentric action enables the wiper members to be extended to create a large space between adjacent wiper members as an inlet is passed. As the wiper members pass by the inlet, the acentric cylindrical wall of the pump housing begins to compress the wiper members into the support, thereby reducing the space between adjacent wiper members in a compressive manner. The wiper member support further carries an added volume pocket between adjacent pairs of wiper members in order to (1) take in more air volume, and (2) create a less severe compression per inter wiper member volume compressed. This configuration can deliver high volumes of evacuated dump air and yet create significantly high vacuum at higher speeds of operation.

US Patent:

D3227260, Dec 31, 1991

Filed:

Jun 2, 1989

Appl. No.:

7/360725

Inventors:

John J. Rademacher - San Pedro CA
Art Mandelbaum - Manhattan Beach CA

US Classification:

D 6465

US Patent:

6328538, Dec 11, 2001

Filed:

Aug 13, 1999

Appl. No.:

9/374747

Inventors:

John J. Rademacher - San Pedro CA

International Classification:

F04B 4900
F04B 1700

US Classification:

417307

Abstract:

The integrated electric fuel pump provides at least three sets of four internally threaded bores, one set on one side of the fluid pump housing, a second set oppositely located with respect to the first set, and a third set disposed toward the end of the fluid pump housing. This enables the integrated electric fuel pump to be secured with four threaded members, complete with rubber isolators, and oriented in three ways, two involving a 180. degree. rotation of the fuel pump which will enable the inlet and outlet to change sides. At one end of the fluid pump housing, an electric motor is integrated with the brushes of the motor supported by the integrated pump housing to enable larger brushes and longer urged brush support structures. The metal wall of the housing draws heat from the brushes of the electric motor, and provides spreading and larger surface radiation of the heat along the pump body as well as some heat transfer into the fuel passing within the pump body. A bypass system is included which incorporates a selectable bypass/return configuration in an elongate housing mounted along the bottom of the pump housing.