| Patent | Date |
|---|
Multi-stage scroll vacuum pumps and related scroll devices
Grant 11,047,389 - Shaffer , et al. June 29, 2 | 2021-06-29 |
Compact energy cycle construction utilizing some combination of a scroll type expander, pump, and compressor for operating according to a rankine, an organic rankine, heat pump, or combined organic rankine and heat pump cycle
Grant 10,774,690 - Shaffer , et al. Sept | 2020-09-15 |
Scroll type device incorporating spinning or co-rotating scrolls
Grant 10,683,865 - Shaffer , et al. | 2020-06-16 |
Compact energy cycle construction utilizing some combination of a scroll type expander, pump, and compressor for operating according to a rankine, an organic rankine, heat pump or combined organic rankine and heat pump cycle
Grant 10,519,815 - Shaffer , et al. Dec | 2019-12-31 |
Multi-stage Scroll Vacuum Pumps And Related Scroll Devices
App 20190211824 - Shaffer; Robert W. ; et al. | 2019-07-11 |
Multi stage scroll vacuum pumps and related scroll devices
Grant 10,221,852 - Shaffer , et al. | 2019-03-05 |
Compact Energy Cycle Construction Utilizing Some Combination Of A Scroll Type Expander, Pump, And Compressor For Operating According To A Rankine, An Organic Rankine, Heat Pump, Or Combined Organic Rankine And Heat Pump Cycle
App 20180216498 - Shaffer; Robert W. ; et al. | 2018-08-02 |
Three stage scroll vacuum pump
Grant 9,885,358 - Shaffer February 6, 2 | 2018-02-06 |
Compact energy cycle construction utilizing some combination of a scroll type expander, pump, and compressor for operating according to a rankine, an organic rankine, heat pump or combined organic rankine and heat pump cycle
App 20170362962 - Shaffer; Robert W. ; et al. | 2017-12-21 |
Compact energy cycle construction utilizing some combination of a scroll type expander, pump, and compressor for operating according to a rankine, an organic rankine, heat pump, or combined organic rankine and heat pump cycle
Grant 9,784,139 - Shaffer , et al. October 10, 2 | 2017-10-10 |
Three stage scroll vacuum pump
App 20170051744 - Shaffer; Robert W. | 2017-02-23 |
Scroll type device incorporating spinning or co-rotating scrolls
App 20170051741 - Shaffer; Robert W. ; et al. | 2017-02-23 |
Multi stage scroll vacuum pumps and related scroll devices
App 20160327042 - Shaffer; Robert W. ; et al. | 2016-11-10 |
Compact Energy Cycle Construction Utilizing Some Combination of a Scroll Type Expander, Pump, and Compressor for Operating According to a Rankine, an Organic Rankine, Heat Pump, or Combined Orgainc Rankine and Heat Pump Cycle
App 20160069219 - Shaffer; Robert W. ; et al. | 2016-03-10 |
Scroll type device including compressor and expander functions in a single scroll plate pair
Grant 9,074,598 - Shaffer , et al. July 7, 2 | 2015-07-07 |
Three stage scroll vacuum pump
Grant 9,028,230 - Shaffer May 12, 2 | 2015-05-12 |
Semi-hermetic scroll compressors, vacuum pumps, and expanders
Grant 8,668,479 - Shaffer March 11, 2 | 2014-03-11 |
Three stage scroll vacuum pump
App 20130315765 - Shaffer; Robert W. | 2013-11-28 |
Three stage scroll vacuum pump
Grant 8,523,544 - Shaffer September 3, 2 | 2013-09-03 |
Scroll type device including compressor and expander functions in a single scroll plate pair
App 20130036762 - Shaffer; Robert W. ; et al. | 2013-02-14 |
Three stage scroll vacuum pump
App 20110256007 - Shaffer; Robert W. | 2011-10-20 |
Semi-hermetic scroll compressors, vacuum pumps, and expanders
App 20110176948 - Shaffer; Robert W. | 2011-07-21 |
Advanced scroll compressor, vacuum pump, and expander
Grant 7,942,655 - Shaffer May 17, 2 | 2011-05-17 |
Advanced scroll compressor, vacuum pump, and expander
App 20070189912 - Shaffer; Robert W. | 2007-08-16 |
Scroll pump system
App 20060099096 - Shaffer; Robert W. ; et al. | 2006-05-11 |
Scroll vacuum pump with improved performance
Grant 6,511,308 - Shaffer January 28, 2 | 2003-01-28 |
Two stage scroll vacuum pump with improved pressure ratio and performance
Grant 6,439,864 - Shaffer August 27, 2 | 2002-08-27 |
Scroll vacuum pump with improved performance
App 20010001639 - Shaffer, Robert W. | 2001-05-24 |
Scroll compressor with a two-piece idler shaft and two piece scroll plates
Grant 6,129,530 - Shaffer October 10, 2 | 2000-10-10 |
Multi-stage scroll compressor
Grant 6,050,792 - Shaffer April 18, 2 | 2000-04-18 |
Scroll fluid displacement apparatus with improved sealing means
Grant 5,752,816 - Shaffer May 19, 1 | 1998-05-19 |
Scroll compressor having idler cranks and strengthening and heat dissipating ribs
Grant 5,466,134 - Shaffer , et al. November 14, 1 | 1995-11-14 |
Scroll-type, positive fluid displacement apparatus with diverse clearances between scroll elements
Grant 4,382,754 - Shaffer , et al. May 10, 1 | 1983-05-10 |
Body assembly for a fluid cooler
Grant 4,304,296 - Shaffer December 8, 1 | 1981-12-08 |
Housing means for defining air/oil separator and oil reservoir assembly
Grant 4,260,402 - Shaffer , et al. April 7, 1 | 1981-04-07 |
Scroll-type two stage positive fluid displacement apparatus
Grant 4,157,234 - Weaver , et al. June 5, 1 | 1979-06-05 |
Scroll-type two stage positive fluid-displacement apparatus with intercooler
Grant 4,141,677 - Weaver , et al. February 27, 1 | 1979-02-27 |
Axial compliance means with radial sealing for scroll-type apparatus
Grant 3,994,636 - McCullough , et al. November 30, 1 | 1976-11-30 |
Scroll apparatus with pressurizable fluid chamber for axial scroll bias
Grant 3,994,633 - Shaffer November 30, 1 | 1976-11-30 |
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