Inventor · disambiguated record
Robert W. Shaffer
Also filed as: SHAFFER II ROBERT W · SHAFFER ROBERT · SHAFFER ROBERT W · SHAFFER ROBERT WILLIAM
41 granted patents·1 pending application·1,477 citations·filing 1975–2024
98Inventor score
Files withAIR SQUARED INC13INGERSOLL RAND CO7SHAFFER ROBERT W7WESTINGHOUSE ELECTRIC CORP6TUTHILL CORP3
Top patents by PatentIndex Score
42 records- 0199US3994636AAxial compliance means with radial sealing for scroll-type apparatusLITTLE INC A·Filed 1975·Granted Nov 30, 1976·127 cites·21 claims
- 0298US4398110AHarmonic electric actuatorWESTINGHOUSE ELECTRIC CORP·Filed 1982·Granted Aug 9, 1983·158 cites·10 claims
- 0398US3994633AScroll apparatus with pressurizable fluid chamber for axial scroll biasLITTLE INC A·Filed 1975·Granted Nov 30, 1976·89 cites·24 claims
- 0497US10221852B2Multi stage scroll vacuum pumps and related scroll devicesAIR SQUARED INC·Filed 2016·Granted Mar 5, 2019·14 cites·23 claims
- 0597US9885358B2Three stage scroll vacuum pumpSHAFFER ROBERT W·Filed 2015·Granted Feb 6, 2018·19 cites·10 claims
- 0697US9784139B2Compact 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 cycleSHAFFER ROBERT W·Filed 2015·Granted Oct 10, 2017·19 cites·12 claims
- 0797US9074598B2Scroll type device including compressor and expander functions in a single scroll plate pairSHAFFER ROBERT W·Filed 2012·Granted Jul 7, 2015·34 cites·8 claims
- 0897US9028230B2Three stage scroll vacuum pumpSHAFFER ROBERT W·Filed 2013·Granted May 12, 2015·34 cites·2 claims
- 0997US8523544B2Three stage scroll vacuum pumpSHAFFER ROBERT W·Filed 2011·Granted Sep 3, 2013·20 cites·12 claims
- 1097US7942655B2Advanced scroll compressor, vacuum pump, and expanderAIR SQUARED INC·Filed 2007·Granted May 17, 2011·44 cites·5 claims
- 1197US4157234AScroll-type two stage positive fluid displacement apparatusINGERSOLL RAND CO·Filed 1978·Granted Jun 5, 1979·69 cites·3 claims
- 1296US11047389B2Multi-stage scroll vacuum pumps and related scroll devicesAIR SQUARED INC·Filed 2019·Granted Jun 29, 2021·8 cites·20 claims
- 1396US8668479B2Semi-hermetic scroll compressors, vacuum pumps, and expandersSHAFFER ROBERT W·Filed 2010·Granted Mar 11, 2014·17 cites·7 claims
- 1495US10519815B2Compact 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 cycleAIR SQUARED INC·Filed 2017·Granted Dec 31, 2019·6 cites·20 claims
- 1595US6511308B2Scroll vacuum pump with improved performanceAIR SQUARED INC·Filed 2001·Granted Jan 28, 2003·59 cites·1 claims
- 1694US6439864B1Two stage scroll vacuum pump with improved pressure ratio and performanceAIR SQUARED INC·Filed 2000·Granted Aug 27, 2002·57 cites·14 claims
- 1794US6050792AMulti-stage scroll compressorAIR SQUARED INC·Filed 1999·Granted Apr 18, 2000·80 cites·4 claims
- 1894US5466134AScroll compressor having idler cranks and strengthening and heat dissipating ribsPURITAN BENNETT CORP·Filed 1994·Granted Nov 14, 1995·80 cites·30 claims
- 1993US10774690B2Compact 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 cycleAIR SQUARED INC·Filed 2018·Granted Sep 15, 2020·6 cites·18 claims
- 2093US4141677AScroll-type two stage positive fluid-displacement apparatus with intercoolerINGERSOLL RAND CO·Filed 1977·Granted Feb 27, 1979·32 cites·12 claims
- 2192USD534448SAuthentication deviceRSA SECURITY INC·Filed 2005·Granted Jan 2, 2007·52 cites·1 claims
- 2291US10683865B2Scroll type device incorporating spinning or co-rotating scrollsAIR SQUARED INC·Filed 2016·Granted Jun 16, 2020·9 cites·20 claims
- 2391US6129530AScroll compressor with a two-piece idler shaft and two piece scroll platesAIR SQUARED INC·Filed 1998·Granted Oct 10, 2000·75 cites·7 claims
- 2490US5752816AScroll fluid displacement apparatus with improved sealing meansAIR SQUARED INC·Filed 1996·Granted May 19, 1998·55 cites·30 claims
- 2590US4382754AScroll-type, positive fluid displacement apparatus with diverse clearances between scroll elementsINGERSOLL RAND CO·Filed 1980·Granted May 10, 1983·54 cites·9 claims
- 2689US5632612AScroll compressor having a tip sealAIR SQUARED INC·Filed 1995·Granted May 27, 1997·61 cites·3 claims
- 2787US5759020AScroll compressor having tip seals and idler crank assembliesAIR SQUARED INC·Filed 1996·Granted Jun 2, 1998·55 cites·6 claims
- 2880US4219976AMachine and method for decontaminating nuclear steam generator channel headWESTINGHOUSE ELECTRIC CORP·Filed 1978·Granted Sep 2, 1980·28 cites·8 claims
- 2979US11946271B2Umbrella basePATIO LEASH LLC·Filed 2022·Granted Apr 2, 2024·2 cites·13 claims
- 3070US4602767AThermocouple apparatus for in situ annealing of a pressure vesselWESTINGHOUSE ELECTRIC CORP·Filed 1984·Granted Jul 29, 1986·14 cites·8 claims
- 3168US4270885AUnloading means for a gas compressorINGERSOLL RAND CO·Filed 1979·Granted Jun 2, 1981·17 cites·15 claims
- 3264US4304296ABody assembly for a fluid coolerINGERSOLL RAND CO·Filed 1979·Granted Dec 8, 1981·19 cites·15 claims
- 3363US4260402AHousing means for defining air/oil separator and oil reservoir assemblyINGERSOLL RAND CO·Filed 1979·Granted Apr 7, 1981·19 cites·4 claims
- 3456US12286817B2Retention patio leash for patio furniturePATIO LEASH LLC·Filed 2024·Granted Apr 29, 2025·0 cites·20 claims
- 3556US4263713AApparatus for actuating and extracting a tube guide-expanderWESTINGHOUSE ELECTRIC CORP·Filed 1978·Granted Apr 28, 1981·11 cites·14 claims
- 3648US5452713APortable ventilator with reversible inlet fittingTUTHILL CORP·Filed 1994·Granted Sep 26, 1995·15 cites·5 claims
- 3743US4216569AMethod for installing a tube in a heat exchanger tube sheetWESTINGHOUSE ELECTRIC CORP·Filed 1978·Granted Aug 12, 1980·6 cites·21 claims
- 3840US2006099096A1Scroll pump systemSHAFFER ROBERT W·Filed 2004·Application pending·0 cites
- 3939US4708324AApparatus for in situ annealing of a pressure vesselWESTINGHOUSE ELECTRIC CORP·Filed 1986·Granted Nov 24, 1987·4 cites·18 claims
- 4033US4337984ALubrication means for a journal and bearingINGERSOLL RAND CO·Filed 1981·Granted Jul 6, 1982·4 cites·13 claims
- 4132USD384449SBlower outlet fittingTUTHILL CORP·Filed 1996·Granted Sep 30, 1997·1 cites·1 claims
- 4232US5597290AMulti-component fan assemblyTUTHILL CORP·Filed 1996·Granted Jan 28, 1997·4 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →