Robert W. Shaffer

Person

County of Butler, OH, US

People

Patents Grantslast 30 patents

Information Patent Grant
Multi-stage scroll vacuum pumps and related scroll devices
- Patent number 11,047,389
- Issue date Jun 29, 2021
- Air Squared, Inc.
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Compact energy cycle construction utilizing some combination of a s...
- Patent number 10,774,690
- Issue date Sep 15, 2020
- Air Squared, Inc.
- Robert W. Shaffer
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Scroll type device incorporating spinning or co-rotating scrolls
- Patent number 10,683,865
- Issue date Jun 16, 2020
- Air Squared, Inc.
- Robert W Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Compact energy cycle construction utilizing some combination of a s...
- Patent number 10,519,815
- Issue date Dec 31, 2019
- Air Squared, Inc.
- Robert W. Shaffer
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Multi stage scroll vacuum pumps and related scroll devices
- Patent number 10,221,852
- Issue date Mar 5, 2019
- Air Squared, Inc.
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Three stage scroll vacuum pump
- Patent number 9,885,358
- Issue date Feb 6, 2018
- Air Squared, Inc.
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Compact energy cycle construction utilizing some combination of a s...
- Patent number 9,784,139
- Issue date Oct 10, 2017
- Air Squared, Inc.
- Robert W. Shaffer
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Scroll type device including compressor and expander functions in a...
- Patent number 9,074,598
- Issue date Jul 7, 2015
- Air Squared Manufacturing, Inc.
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Three stage scroll vacuum pump
- Patent number 9,028,230
- Issue date May 12, 2015
- Air Squared, Inc.
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Semi-hermetic scroll compressors, vacuum pumps, and expanders
- Patent number 8,668,479
- Issue date Mar 11, 2014
- Air Squad, Inc.
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Three stage scroll vacuum pump
- Patent number 8,523,544
- Issue date Sep 3, 2013
- Air Squared, Inc.
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Advanced scroll compressor, vacuum pump, and expander
- Patent number 7,942,655
- Issue date May 17, 2011
- Air Squared, Inc.
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Scroll vacuum pump with improved performance
- Patent number 6,511,308
- Issue date Jan 28, 2003
- Air Squared, Inc.
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Two stage scroll vacuum pump with improved pressure ratio and perfo...
- Patent number 6,439,864
- Issue date Aug 27, 2002
- Air Squared, Inc.
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Scroll compressor with a two-piece idler shaft and two piece scroll...
- Patent number 6,129,530
- Issue date Oct 10, 2000
- Air Squared, Inc.
- Robert W. Shaffer
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Multi-stage scroll compressor
- Patent number 6,050,792
- Issue date Apr 18, 2000
- Air Squared, Inc.
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Scroll compressor having tip seals and idler crank assemblies
- Patent number 5,759,020
- Issue date Jun 2, 1998
- Air Squared, Inc.
- Robert Shaffer
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Scroll fluid displacement apparatus with improved sealing means
- Patent number 5,752,816
- Issue date May 19, 1998
- Air Squared,Inc.
- Robert W. Shaffer
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Scroll compressor having a tip seal
- Patent number 5,632,612
- Issue date May 27, 1997
- Air Squared, Inc.
- Robert Shaffer
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Scroll compressor having idler cranks and strengthening and heat di...
- Patent number 5,466,134
- Issue date Nov 14, 1995
- Puritan-Bennett Corporation
- Robert W. Shaffer
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

Patents Applicationslast 30 patents

Information Patent Application
MULTI-STAGE SCROLL VACUUM PUMPS AND RELATED SCROLL DEVICES
- Publication number 20190211824
- Publication date Jul 11, 2019
- Air Squared, Inc.
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Compact Energy Cycle Construction Utilizing Some Combination Of A S...
- Publication number 20180216498
- Publication date Aug 2, 2018
- Robert W. Shaffer
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Compact energy cycle construction utilizing some combination of a s...
- Publication number 20170362962
- Publication date Dec 21, 2017
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Three stage scroll vacuum pump
- Publication number 20170051744
- Publication date Feb 23, 2017
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Scroll type device incorporating spinning or co-rotating scrolls
- Publication number 20170051741
- Publication date Feb 23, 2017
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Multi stage scroll vacuum pumps and related scroll devices
- Publication number 20160327042
- Publication date Nov 10, 2016
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Compact Energy Cycle Construction Utilizing Some Combination of a S...
- Publication number 20160069219
- Publication date Mar 10, 2016
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Three stage scroll vacuum pump
- Publication number 20130315765
- Publication date Nov 28, 2013
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Scroll type device including compressor and expander functions in a...
- Publication number 20130036762
- Publication date Feb 14, 2013
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Three stage scroll vacuum pump
- Publication number 20110256007
- Publication date Oct 20, 2011
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Semi-hermetic scroll compressors, vacuum pumps, and expanders
- Publication number 20110176948
- Publication date Jul 21, 2011
- Robert W. Shaffer
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Advanced scroll compressor, vacuum pump, and expander
- Publication number 20070189912
- Publication date Aug 16, 2007
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Scroll pump system
- Publication number 20060099096
- Publication date May 11, 2006
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Scroll vacuum pump with improved performance
- Publication number 20010001639
- Publication date May 24, 2001
- Robert W. Shaffer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Robert W. Shaffer

Person

Patents Grantslast 30 patents

Multi-stage scroll vacuum pumps and related scroll devices

Compact energy cycle construction utilizing some combination of a s...

Scroll type device incorporating spinning or co-rotating scrolls

Compact energy cycle construction utilizing some combination of a s...

Multi stage scroll vacuum pumps and related scroll devices

Three stage scroll vacuum pump

Compact energy cycle construction utilizing some combination of a s...

Scroll type device including compressor and expander functions in a...

Three stage scroll vacuum pump

Semi-hermetic scroll compressors, vacuum pumps, and expanders

Three stage scroll vacuum pump

Advanced scroll compressor, vacuum pump, and expander

Scroll vacuum pump with improved performance

Two stage scroll vacuum pump with improved pressure ratio and perfo...

Scroll compressor with a two-piece idler shaft and two piece scroll...

Multi-stage scroll compressor

Scroll compressor having tip seals and idler crank assemblies

Scroll fluid displacement apparatus with improved sealing means

Scroll compressor having a tip seal

Scroll compressor having idler cranks and strengthening and heat di...

Patents Applicationslast 30 patents

MULTI-STAGE SCROLL VACUUM PUMPS AND RELATED SCROLL DEVICES

Compact Energy Cycle Construction Utilizing Some Combination Of A S...

Compact energy cycle construction utilizing some combination of a s...

Three stage scroll vacuum pump

Scroll type device incorporating spinning or co-rotating scrolls

Multi stage scroll vacuum pumps and related scroll devices

Compact Energy Cycle Construction Utilizing Some Combination of a S...

Three stage scroll vacuum pump

Scroll type device including compressor and expander functions in a...

Three stage scroll vacuum pump

Semi-hermetic scroll compressors, vacuum pumps, and expanders

Advanced scroll compressor, vacuum pump, and expander

Scroll pump system

Scroll vacuum pump with improved performance