NORBERT W OVERFIELD
Engineers in Corry, PA
License number
Pennsylvania PE030951E
Category
Engineers
Type
Professional Engineer
Address
Address
Corry, PA 16407
Professional information
Variable Clearance Pocket Piston Positioning Device
US Patent:
4775299, Oct 4, 1988
Filed:
Aug 29, 1986
Appl. No.:
6/902244
Inventors:
Norbert W. Overfield - Corry PA
Richard W. Erickson - Corry PA
Richard W. Erickson - Corry PA
Assignee:
Cooper Industries, Inc. - Houston TX
International Classification:
F04B 4900
US Classification:
417274
Abstract:
A clearance pocket having a housing attached to a cylinder of the compressor. In one embodiment, in which the housing has a sidewall and a distal wall and includes a clearance chamber with a passageway extending between the cylinder head and the clearance chamber, the pocket also has a piston movably located in the clearance chamber in slidably sealing engagement with the interior sidewall of the housing, and means for providing fluidic communication between the cylinder head and that portion of the clearance chamber between the piston and the distal wall of the housing. In another embodiment, in which the housing also includes a second clearance chamber with a second passageway extending between the first and second clearance chambers, the pocket also has a second piston movably located in the second clearance chamber in slidably sealing engagement with the interior wall of the housing; means for fixedly separating the first piston and the second piston so that they move freely in unison means for providing fluidic communication between the cylinder head and that portion of the first clearance chamber between the first piston and the effectively closed second passageway; and controllable means for establishing fluidic communication between that portion of the second clearance chamber between the second piston and the effectively closed second passageway and that portion of the clearance chamber between the second piston and the distal wall of the housing.
Positive Displacement Compressor
US Patent:
5411054, May 2, 1995
Filed:
May 16, 1994
Appl. No.:
8/243265
Inventors:
Norbert W. Overfield - Corry PA
International Classification:
F04B 5310
US Classification:
1375121
Abstract:
A reciprocating positive displacement compressor is described. The positive displacement compressor has an intake or exhaust valve provided with a deformable seal means, such as a Belleville spring, that makes edge or area contact with a valve seat in the closed condition of the valve.
Reciprocating Compressor Valve
US Patent:
5311902, May 17, 1994
Filed:
Nov 6, 1992
Appl. No.:
7/973210
Inventors:
Norbert W. Overfield - Corry PA
International Classification:
F04B 2102
US Classification:
1375121
Abstract:
A reciprocating positive displacement compressor is described having an intake or exhaust valve provided with a deformable seal means, such as a Belleville spring, that makes edge or area contact with a valve seat in the closed condition of the valve, is described.