Membership
Tour
Register
Log in
DUNHAM-BUSH, INC
Follow
Organization
WEST HARTFORD, CT, US
Organizations
Overview
Industries
People
People
Information
Transactions
Events
Impact
Please log in for detailed analytics
Patents Grants
last 30 patents
Information
Patent Grant
Screw step drive internal volume ratio varying system for helical s...
Patent number
4,909,716
Issue date
Mar 20, 1990
Dunham-Bush
Joseph S. Orosz
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Electric motor back-stopping device
Patent number
4,647,801
Issue date
Mar 3, 1987
Dunham-Bush, Inc.
Richard J. Swartwout
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Constant volume flow burner fuel control system
Patent number
4,585,169
Issue date
Apr 29, 1986
Dunham-Bush, Inc.
Joseph B. Kinsey
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Constant evaporator pressure slide valve modulator for screw compre...
Patent number
4,583,373
Issue date
Apr 22, 1986
Dunham-Bush, Inc.
David N. Shaw
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Vertical axis hermetic helical screw rotary compressor with dischar...
Patent number
4,545,742
Issue date
Oct 8, 1985
Dunham-Bush, Inc.
Donald D. Schaefer
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Simplified unloader indicator for helical screw rotary compressor
Patent number
4,536,130
Issue date
Aug 20, 1985
Dunham-Bush, Inc.
Salvatore Orlando
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Screw rotor machine with specific tooth profile
Patent number
4,527,967
Issue date
Jul 9, 1985
Dunham-Bush, Inc.
Robert A. Ingalls
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Modular unload slide valve control assembly for a helical screw rot...
Patent number
4,508,491
Issue date
Apr 2, 1985
Dunham-Bush, Inc.
Donald D. Schaefer
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Oil atomizing compressor working fluid cooling system for gas/vapor...
Patent number
4,497,185
Issue date
Feb 5, 1985
Dunham-Bush, Inc.
David N. Shaw
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Temperature and pressure actuated capacity control system for air c...
Patent number
4,495,778
Issue date
Jan 29, 1985
Dunham-Bush, Inc.
David N. Shaw
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Helical screw rotary compressor for air conditioning system having...
Patent number
4,478,054
Issue date
Oct 23, 1984
Dunham-Bush, Inc.
David N. Shaw
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Vertical axis hermetic helical screw rotary compressor with dischar...
Patent number
4,477,233
Issue date
Oct 16, 1984
Dunham-Bush, Inc.
Donald D. Schaefer
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Self-cleaning single loop mist type lubrication system for screw co...
Patent number
4,439,121
Issue date
Mar 27, 1984
Dunham-Bush, Inc.
David N. Shaw
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Variable volume positive displacement rotary pump
Patent number
4,437,816
Issue date
Mar 20, 1984
Dunham-Bush, Inc.
Dennis A. Magee
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Combined pressure matching and capacity control slide valve assembl...
Patent number
RE31379
Issue date
Sep 13, 1983
Dunham-Bush, Inc.
David N. Shaw
417 - Pumps
Information
Patent Grant
Stepping type unloading system for helical screw rotary compressor
Patent number
4,388,048
Issue date
Jun 14, 1983
Dunham-Bush, Inc.
David N. Shaw
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Oil equalization system for parallel connected compressors
Patent number
4,383,802
Issue date
May 17, 1983
Dunham-Bush, Inc.
Sebastian J. Gianni
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Closed loop compressed gas system with oil mist lubricated screw co...
Patent number
4,375,156
Issue date
Mar 1, 1983
Dunham-Bush, Inc.
David N. Shaw
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Screw compressor slide valve engine RPM tracking system
Patent number
4,342,199
Issue date
Aug 3, 1982
Dunham-Bush, Inc.
David N. Shaw
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Vertical axis hermetic rotary helical screw compressor with improve...
Patent number
RE30994
Issue date
Jul 13, 1982
Dunham-Bush, Inc.
David N. Shaw
417 - Pumps
Information
Patent Grant
Unloading control system for helical screw compressor refrigeration...
Patent number
4,335,582
Issue date
Jun 22, 1982
Dunham-Bush, Inc.
David N. Shaw
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Concentric tube heat exchange assembly with improved internal fin s...
Patent number
4,284,133
Issue date
Aug 18, 1981
Dunham-Bush, Inc.
Sebastian J. Gianni
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Compressor heat pump system with maximum and minimum evaporator .DE...
Patent number
4,257,795
Issue date
Mar 24, 1981
Dunham-Bush, Inc.
David N. Shaw
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Control system for screw compressor
Patent number
4,249,866
Issue date
Feb 10, 1981
Dunham-Bush, Inc.
David N. Shaw
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Injection cooling of screw compressors
Patent number
RE30499
Issue date
Feb 3, 1981
Dunham-Bush, Inc.
Harold W. Moody
062 - Refrigeration
Information
Patent Grant
Solar augmented heat pump system with automatic staging reciprocati...
Patent number
4,245,476
Issue date
Jan 20, 1981
Dunham-Bush, Inc.
David N. Shaw
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Attic mounted solar assist multi-source/sink residential heat pump...
Patent number
4,242,872
Issue date
Jan 6, 1981
Dunham-Bush, Inc.
David N. Shaw
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Combined pressure matching and capacity control slide valve assembl...
Patent number
4,222,716
Issue date
Sep 16, 1980
Dunham-Bush, Inc.
David N. Shaw
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
High speed variable delivery helical screw compressor/expander auto...
Patent number
4,220,197
Issue date
Sep 2, 1980
Dunham-Bush, Inc.
Donald D. Schaefer
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Air source heat pump with displacement doubling through multiple sl...
Patent number
4,209,998
Issue date
Jul 1, 1980
Dunham-Bush, Inc.
David N. Shaw
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
74598924 - VARI-VAC
Serial number
74598924
Registration number
1943866
Filing date
Nov 15, 1994
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
74564736 - STANDARD FIN-PIPE
Serial number
74564736
Registration number
1969367
Filing date
Aug 23, 1994
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
74520557 - VARI-VAC
Serial number
74520557
Filing date
May 6, 1994
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
74392950 - STANDARD FIN-PIPE
Serial number
74392950
Filing date
May 21, 1993
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
74339489 - HYDROTILE
Serial number
74339489
Registration number
1816782
Filing date
Dec 14, 1992
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
74173911 - GUARDIAN
Serial number
74173911
Registration number
1760582
Filing date
Jun 7, 1991
DUNHAM-BUSH, INC.
7 - Machines and machine tools
Information
Trademark
74009340 - DUNHAM
Serial number
74009340
Registration number
1633927
Filing date
Dec 11, 1989
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
73799134 - PRODUCTS THAT PERFORM...BY PEOPLE WHO CARE
Serial number
73799134
Registration number
1587140
Filing date
May 8, 1989
DUNHAM-BUSH, INC.
37 - Building construction
Information
Trademark
73766140 - DUNHAM-BUSH
Serial number
73766140
Registration number
1558787
Filing date
Nov 28, 1988
DUNHAM-BUSH, INC.
7 - Machines and machine tools
Information
Trademark
73499283 - DUNHAM-BUSH
Serial number
73499283
Registration number
1348927
Filing date
Sep 12, 1984
DUNHAM-BUSH, INC.
7 - Machines and machine tools
Information
Trademark
73443268 - MONITROL
Serial number
73443268
Filing date
Sep 12, 1983
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
73343835 - DUNHAM-BUSH OIL KARE
Serial number
73343835
Registration number
1226188
Filing date
Dec 30, 1981
DUNHAM-BUSH, INC.
37 - Building construction
Information
Trademark
73343804 - OIL-KARE
Serial number
73343804
Registration number
1227805
Filing date
Dec 30, 1981
DUNHAM-BUSH, INC.
37 - Building construction
Information
Trademark
73268981 - OIL-KARE
Serial number
73268981
Filing date
Jul 7, 1980
DUNHAM-BUSH, INC.
37 - Building construction
Information
Trademark
73195210 - SOLAR SPACE PAK
Serial number
73195210
Filing date
Dec 1, 1978
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
73137698 - D/B METIC
Serial number
73137698
Registration number
1098692
Filing date
Aug 15, 1977
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
73135982 - ECON-O-TROL
Serial number
73135982
Registration number
1094356
Filing date
Aug 1, 1977
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
73053632 - VARI-AIR
Serial number
73053632
Registration number
1035217
Filing date
May 29, 1975
DUNHAM-BUSH, INC.
7 - Machines and machine tools
Information
Trademark
73053645 - POWERSLIDE
Serial number
73053645
Registration number
1052271
Filing date
May 29, 1975
DUNHAM-BUSH, INC.
7 - Machines and machine tools
Information
Trademark
73041519 - HEAT-X
Serial number
73041519
Registration number
1034273
Filing date
Jan 13, 1975
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
72464986 - INNER-FIN
Serial number
72464986
Registration number
999954
Filing date
Aug 6, 1973
DUNHAM-BUSH, INC.
7 - Machines and machine tools
Information
Trademark
72435176 - KOOL-MOR
Serial number
72435176
Registration number
991302
Filing date
Sep 11, 1972
DUNHAM-BUSH, INC.,
12 - Vehicles
Information
Trademark
72424930 - WAVE-FIN
Serial number
72424930
Registration number
983937
Filing date
May 19, 1972
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
72421332 - WAVE-FIN
Serial number
72421332
Registration number
983936
Filing date
Apr 13, 1972
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
72362670 - DBX
Serial number
72362670
Registration number
945761
Filing date
Jun 15, 1970
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
72362669 - PCX
Serial number
72362669
Registration number
945760
Filing date
Jun 15, 1970
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
72343830 - INNER-FIN
Serial number
72343830
Registration number
948927
Filing date
Nov 18, 1969
DUNHAM-BUSH, INC.
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
72315662 - D-B
Serial number
72315662
Registration number
902142
Filing date
Dec 30, 1968
DUNHAM-BUSH, INC.
7 - Machines and machine tools
Information
Trademark
72175907 - D-B
Serial number
72175907
Registration number
771880
Filing date
Aug 28, 1963
DUNHAM-BUSH, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
72175906 - D-B
Serial number
72175906
Registration number
779813
Filing date
Aug 28, 1963
DUNHAM-BUSH, INC.
7 - Machines and machine tools