Harry L Johnson

US Patent:

43971717, Aug 9, 1983

Filed:

Jul 27, 1981

Appl. No.:

6/287443

Inventors:

Sang-Kee Suh - Daequ, KR
Gotz S. Hauser - Southfield MI
Harry T. Johnson - Dearborn MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

B21D 2200

US Classification:

72348

Abstract:

A sheet metal blank is placed at the entrance of a die having a splined interior contour. A punch having a conjugate splined surface enters and passes longitudinally through the die. The splines are formed by passing the blank and punch through the die within an annular space whose contour defines the final spline configuration. Alternatively, preformed splines having a large pressure angle and full corner radii are reformed by multiple passes through dies whose configurations vary to produce shallow pressure angle splines and tight corner radii.

US Patent:

44313896, Feb 14, 1984

Filed:

Jun 22, 1981

Appl. No.:

6/275948

Inventors:

Harry T. Johnson - Troy MI

Assignee:

Vickers, Incorporated - Troy MI

International Classification:

F04C 1500

US Classification:

418 82

Abstract:

A fluid pressure energy translating device of the sliding vane type comprising a cam ring including an internal contour, a rotor having a plurality of vanes rotatable therewith and slidable relative thereto in slots in the rotor with one end of each vane engaging the internal contour. The rotor and internal contour cooperate to define one or more pumping chambers between the periphery of the rotor and the cam contour through which the vanes pass carrying fluid from an inlet port to an outlet port. At least one cheek plate is associated with the body and rotor. Two pressure chambers are formed for each vane and each vane has two surfaces, one in each chamber, both being effective under pressure in the respective chambers to urge the vanes into engagement with the cam. A generally annular internal feed passage is formed entirely within the rotor and communicates with one set of the pressure chambers. A radial passage is provided along at least one side of each vane extending from the tip to the base thereof, so that cyclically changing pressure is supplied to the other set of chambers.