Inventor
Gerald R. Pruitt
Inventor
San Pedro, CA, US
Overview
Patents· 14 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F25Bprimary
F25BRefrigeration machines, plants or systems35%
F04BPositive-displacement machines for liquids16%
F16FSprings16%
F25DRefrigerators6%
H02KDynamo-electric machines6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
F02GHot gas or combustion-product positive-displacement engine plants3%
F16JPistons3%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light3%
G05DSystems for controlling or regulating non-electric variables3%
PatentTitleYear
8,302,410'Inertance tube and surge volume for pulse tube refrigerator'20127,263,838'Pulse tube cooler with internal MEMS flow controller'20077,089,750'Expansion-nozzle cryogenic refrigeration system with reciprocating compressor'20065,966,936'Pin coupling for reduced side loads in a driven displacer-piston link and method'19995,944,302'Linear compressor including reciprocating piston and machined double-helix piston spring'19995,596,875'Split stirling cycle cryogenic cooler with spring-assisted expander'19975,542,254'Cryogenic cooler'19965,018,357'Temperature control system for a cryogenic refrigeration'19914,924,675'Linear motor compresser with stationary piston'19904,910,965'Means for periodic desorption of a cryopump'19904,873,913'Dry roughing pump having a gas film bearing'19894,860,543'Vibration isolation system for a linear reciprocating machine'19894,783,968'Vibration isolation system for a linear reciprocating machine'19884,761,960'Cryogenic refrigeration system having an involute laminated stator for its linear drive motor'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–1991Patents assigned to HELIX TECH CORP (7)· patent assignee history
1988–1990Based in Mendon, MA, US· patent location history
1991Based in Rancho Palos Verdes, CA, US· patent location history
1996–1997Patents assigned to HUGHES AIRCRAFT CO (2)· patent assignee history
1996–2012Based in San Pedro, CA, US· patent location history
1999–2012Patents assigned to RAYTHEON CO (4)· patent assignee history
2012Patents assigned to FINCH ANTHONY T (1)· patent assignee history
2012Patents assigned to KIRKCONNELL CARL S (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HELIX TECH CORP | 7 | 1988–1991 |
| RAYTHEON CO | 4 | 1999–2012 |
| HUGHES AIRCRAFT CO | 2 | 1996–1997 |
| FINCH ANTHONY T | 1 | 2012 |
| KIRKCONNELL CARL S | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| San Pedro, California, US | 7 | 1996–2012 |
| Mendon, Massachusetts, US | 6 | 1988–1990 |
| Rancho Palos Verdes, California, US | 1 | 1991 |