Charles Andrew Singletary

US Patent:

6446451, Sep 10, 2002

Filed:

Mar 30, 2001

Appl. No.:

09/820983

Inventors:

David T. Monk - Bristol VA
Joe T. Hill - Bristol VA
Philip C. Wagner - Bristol TN
Joseph F. Loprete - Bristol TN
Michael R. Young - Bristol TN
Charles A. Singletary - Bristol VA

Assignee:

York International Corporation - York PA

International Classification:

F25B 100

US Classification:

622285, 62229, 417221, 417326

Abstract:

A two-stage reciprocating compressor is provided. The compressor includes a block with a single cylinder and associated single compression chamber and single piston. The compressor further includes a crankshaft. The crankshaft has an eccentric crankpin that is operatively connected to the piston. A reversible motor is provided to rotate the crankshaft in a forward direction and in a reverse direction. An eccentric cam is rotatably mounted on the eccentric crankpin. The eccentric cam is held stationary with respect to the crankpin when the crankshaft is rotating in the forward direction. When rotating in the forward direction, the crankshaft drives the piston at a full stroke between a bottom position and a top dead center position. The eccentric cam rotates with respect to the crankpin when the crankshaft is rotating in the reverse direction. When rotating in the reverse direction, the crankshaft drives the piston at a reduced stroke between an intermediate position and the top dead center position.

US Patent:

56832362, Nov 4, 1997

Filed:

Mar 21, 1996

Appl. No.:

8/619316

Inventors:

Mark W. Harrison - Onalaska WI
Peter A. Kotlarek - Onalaska WI
Charles A. Singletary - Whitehouse TX
John Kenneth Wollitz - Tyler TX

Assignee:

Alliance Compressors - Tyler TX

International Classification:

F04C 1804
F04C 2900
F04C 2902
F16K 1502

US Classification:

418 551

Abstract:

A scroll-type refrigeration compressor has a gas-liquid mixture discharge passage extending through the driver scroll drive shaft for discharging refrigerant gas and entrained lubricant into a high pressure chamber in the compressor housing. An anti-reverse rotation valve is connected to the distal end of the drive shaft and includes a valve housing with radially extending discharge ports and a closure member movable to prevent reverse flow of high pressure gas to the scroll compression chambers to prevent reverse rotation on compressor shutdown. A pressure equalization port may be formed in the valve closure member, valve housing or the distal end of the drive shaft to allow slow bleed down of pressure from the high pressure side to the low pressure side to minimize starting torque of the drive motor. The valve may be formed from a tubular metal housing and having a plug-type closure member slidably disposed therein with the housing being press fitted in a counterbore in the end of the shaft. A gas-liquid separation baffle may be disposed around the valve housing for assisting in gas-liquid separation after the mixture is discharged from the valve housing.

US Patent:

54217083, Jun 6, 1995

Filed:

Feb 16, 1994

Appl. No.:

8/197084

Inventors:

Robert E. Utter - Whitehouse TX
S. Boyd Wall - Tyler TX
Charles A. Singletary - Whitehouse TX
Gene M. Fields - Bristol TN
Joe T. Hill - Bristol VA
John R. Williams - Bristol TN

Assignee:

Alliance Compressors Inc. - Tyler TX

International Classification:

F01C 104

US Classification:

418 556

Abstract:

A high side co-rotating refrigerant scroll compressor includes a motor disposed vertically above its compression mechanism. The discharge of gas from the compression mechanism is through the drive shaft of the drive scroll member which is rotatably supported at its distal end in an upper bearing. Upper bearing lubrication is accomplished by the disentrainment of oil from the mixture of compressed refrigerant gas and oil discharged from the compression mechanism in the vicinity of the bearing and by the direction of such disentrained oil to the bearing.

US Patent:

62172875, Apr 17, 2001

Filed:

Jan 22, 1999

Appl. No.:

9/235288

Inventors:

David T. Monk - Bristol VA
Joe T. Hill - Bristol VA
Philip C. Wagner - Bristol TN
Joseph F. Loprete - Bristol TN
Michael R. Young - Bristol TN
Charles A. Singletary - Bristol VA

Assignee:

Bristol Compressors, Inc. - Bristol VA

International Classification:

F04B 4906

US Classification:

417 45

Abstract:

A two-stage reciprocating compressor is provided. The compressor includes a reversible motor that rotates a crankshaft. The crankshaft is connected to a piston by a mechanical system. The mechanical system drives the piston at a full stroke between a bottom position and a top dead center position when the motor is operated in a forward direction. The mechanical system drives the piston at a reduced stroke between an intermediate position and the top dead center position when the motor is operated in the reverse direction. The compressor also includes a control for selectively operating the motor in either the forward direction at a first preselected, fixed speed or in the reverse direction at a second preselected fixed speed.