Paul A Simpson

US Patent:

39371484, Feb 10, 1976

Filed:

Aug 5, 1974

Appl. No.:

5/494943

Inventors:

Paul A. Simpson - Woburn MA

Assignee:

Cambridge Thermionic Corporation - Cambridge MA

International Classification:

B61B 1308

US Classification:

104148MS

Abstract:

A linear magnetic bearing provides magnetic support by means of permanent magnets and control by means of electromagnets and an electronic control system such that virtually zero power is required to maintain the bearing in suspension. Persisting net force producing electric energization of the electromagnets resulting from displacement of the bearing causes the energization to be augmented to reposition the bearing to an oppositely displaced position of substantial equilibrium with minimized net force producing electric energization of the electromagnets. The linear magnetic bearing is effectively utilized in one application to significantly reduce the power requirements for magnetic levitation vehicles.

US Patent:

41473698, Apr 3, 1979

Filed:

Oct 14, 1977

Appl. No.:

5/842143

Inventors:

Paul K. Simpson - Milford NH

Assignee:

Sanders Associates, Inc. - Nashua NH

International Classification:

B62B 120

US Classification:

280 30

Abstract:

A unitary double-halved shipping container is provided with a wheel well, and detachable arms and wheel assembly to convert the container into a wheelbarrow configuration. This permits ease of handling and maneuvering at low cost in view of the quickly detachable arms and wheel assembly. Integral slots are provided in the container body which accommodate the prongs of a conventional fork lift truck should movement of a number of containers be desired or should the distance of movement be such as to be more conveniently done by fork lift machinery. The halves of the containers are nestable and the slots accommodate securing or shipping straps. The wheel assembly includes a U-shaped spring member, the ends of which are brought together for ease of insertion and release of the wheel. The U-shaped spring member is also provided with a number of outwardly projecting sharp protrusions to secure the wheel assembly to the container when the ends of the U-shaped member are released.