Herbert N Underwood

US Patent:

49901273, Feb 5, 1991

Filed:

Oct 17, 1989

Appl. No.:

7/422626

Inventors:

Richard W. Roberts - late of Lombard IL
Richard L. Smirl - Arlington Heights IL
Herbert N. Underwood - Chicago IL

Assignee:

Borg-Warner Automotive, Inc. - Sterling Heights MI

International Classification:

F16H 3708

US Classification:

475211

Abstract:

A dual range infinitely variable transmission utilizes a continuously variable speed mechanism in conjunction with a fixed ratio speed mechanism to provide two power paths from the input to the rotatable output. A jaw clutch is utilized to switch between the high range and low range of the transmission. A reaction type clutch is utilized to provide a positive neutral for the transmission.

US Patent:

53339690, Aug 2, 1994

Filed:

Mar 19, 1993

Appl. No.:

8/034506

Inventors:

James R. Blaha - Evanston IL
Herbert N. Underwood - Chicago IL
Ralph Salle - Lake Zurich IL
Ronald R. Ralston - Elmhurst IL

International Classification:

E01C 1900

US Classification:

404 91

Abstract:

An automated pavement repair vehicle includes a vehicle and its various computer-controlled subsystems. The various subsystems, including a vacuum system, heating system and spray patch system, for completing pavement repair, are located on the frame and rear of the truck. A robotic cell at the rear of the truck includes an assembly of retractable doors. The doors are lowered around the pothole to allow control of ambient conditions during the pavement repair procedure.

US Patent:

44754167, Oct 9, 1984

Filed:

Jul 27, 1982

Appl. No.:

6/402408

Inventors:

Herbert N. Underwood - Chicago IL

Assignee:

Borg-Warner Corporation - Chicago IL

International Classification:

B60K 4112

US Classification:

74868

Abstract:

A continuously variable transmission of the expansible frusto-conical pulley type having fluid expansion chambers controlling expansion and contraction of the V-groove includes a fluid control circuit having a ratio control pressure regulator valve, a ratio relief valve connected across the ratio control regulator valve, providing for rapid down shift of the pulley combination while maintaining non-slip engagement between pulley discs and a flexible transmission band of trapezoidal cross section.

US Patent:

44417292, Apr 10, 1984

Filed:

May 17, 1982

Appl. No.:

6/378964

Inventors:

Herbert N. Underwood - Chicago IL

Assignee:

Borg-Warner Corporation - Chicago IL

International Classification:

B62F 1500

US Classification:

280278

Abstract:

A folding bicycle assembly generally having a front and rear subassembly which pivot about a sprocket hub to nest with each other to provide a compact assembly for storage or transfer. The bicycle assembly utilizes wheels of a standard size and is equipped with pedals and handle bars that fold to further minimize the size of the folded assembly.

US Patent:

40808432, Mar 28, 1978

Filed:

Dec 13, 1976

Appl. No.:

5/750083

Inventors:

Herbert N. Underwood - Chicago IL

Assignee:

Borg-Warner Corporation - Chicago IL

International Classification:

F16H 542

US Classification:

74336R

Abstract:

An improved accessory drive which employs the crankshaft and camshaft of an internal combustion engine to operate, at different times, the accessory drive system for the engine; the camshaft rotating at exactly 50% of the speed of the crankshaft. A clutching system disconnects the crankshaft from the accessory drive system at a predetermined speed of rotation to allow the slower camshaft to assume activation of the accessory drive system.

US Patent:

54393132, Aug 8, 1995

Filed:

May 3, 1994

Appl. No.:

8/238151

Inventors:

James R. Blaha - Evanston IL
Herbert N. Underwood - Chicago IL
Ralph Salle - Lake Zurich IL
Ronald R. Ralston - Elmhurst IL

Assignee:

Northwestern University - Evanston IL

International Classification:

E01C 1900

US Classification:

404 75

Abstract:

An automated pavement repair vehicle includes a vehicle and its various computer-controlled subsystems. The various subsystems, including a vacuum system, heating system and spray patch system, for completing pavement repair, are located on the frame and rear of the truck. A robotic cell at the rear of the truck includes an assembly of retractable doors. The doors are lowered around the pothole to allow control of ambient conditions during the pavement repair procedure.

US Patent:

48159549, Mar 28, 1989

Filed:

Nov 26, 1984

Appl. No.:

6/674890

Inventors:

Herbert N. Underwood - Chicago IL

Assignee:

Borg Warner Corporation - Chicago IL

International Classification:

F04C 224
F04B 4900

US Classification:

418196

Abstract:

An offset three-gear, two-system pump includes first, second, and third overlapping chambers. First inlet and low-pressure outlet ports communicate with the first and second chambers, and second inlet and high-pressure pressure outlet ports communicate with the first and third chambers. The first chamber has a short wall portion extending from the low-pressure outlet port to the second inlet port, and a long wall portion extending from the high-pressure outlet port to the first inlet port. First, second, and third gears are respectively rotatable in the chambers. The first and second gears form a low-pressure gear set, and the first and third gears form a high-pressure gear set. A small number of first gear teeth are cooperable with the short wall portion and a large number of first gear teeth are cooperable with the long wall portion to effect sealing against leakage from the pressure ports to the inlet ports.

US Patent:

42189578, Aug 26, 1980

Filed:

Oct 3, 1977

Appl. No.:

5/839088

Inventors:

Herbert N. Underwood - Chicago IL

Assignee:

Borg-Warner Corporation - Chicago IL

International Classification:

F15B 1108
F15B 13042

US Classification:

91421

Abstract:

A flow control valve in fluid communication with a variable orifice which is utilized to control speed of a fluid motor, the valve providing a constant pressure drop across the variable orifice whereby consistent control of speed of the motor may be maintained.