Harold K. Haavik

Person

Norwalk, CT, US

People

Patents Grantslast 30 patents

Information Patent Grant
Cooling gas in a rotary screw type pump
- Patent number 6,394,777
- Issue date May 28, 2002
- The Nash Engineering Company
- Harold K. Haavik
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Mixed flow liquid ring pumps
- Patent number 5,961,295
- Issue date Oct 5, 1999
- The Nash Engineering Company
- Harold K. Haavik
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Fluid bearing pad arrangement for liquid ring pump systems
- Patent number 5,653,582
- Issue date Aug 5, 1997
- The Nash Engineering Company
- Andrew C. Harvey
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Liquid ring pumps with pressurized gas supported rotating liners
- Patent number 5,370,502
- Issue date Dec 6, 1994
- The Nash Engineering Company
- Harold K. Haavik
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Liquid ring pumps with rotating liners
- Patent number 5,295,794
- Issue date Mar 22, 1994
- The Nash Engineering Company
- Harold K. Haavik
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Two-stage liquid ring pump with rotating liner in first stage suppo...
- Patent number 5,217,352
- Issue date Jun 8, 1993
- The Nash Engineering Company
- Harold K. Haavik
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Bearing fluid distribution systems for liquid ring pumps with rotat...
- Patent number 5,197,863
- Issue date Mar 30, 1993
- The Nash Engineering Company
- Thomas R. Dardis
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Centrifugal pump with sealing means
- Patent number 5,114,310
- Issue date May 19, 1992
- A. Ahlstrom Corporation
- Harold Haavik
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Liquid ring pumps having rotating lobe liners with end walls
- Patent number 5,100,300
- Issue date Mar 31, 1992
- The Nash Engineering Company
- Harold K. Haavik
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Liquid ring compressors
- Patent number 4,613,283
- Issue date Sep 23, 1986
- The Nash Engineering Company
- Harold K. Haavik
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Liquid ring pump with vanes in liquid ring
- Patent number 4,422,832
- Issue date Dec 27, 1983
- The Nash Engineering Company
- Harold K. Haavik
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Two-stage liquid ring pump with improved intrastage and interstage...
- Patent number 4,334,830
- Issue date Jun 15, 1982
- The Nash Engineering Company
- Harold K. Haavik
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Two stage liquid ring pump
- Patent number 4,323,334
- Issue date Apr 6, 1982
- The Nash Engineering Company
- Harold K. Haavik
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Long liquid ring pumps and compressors
- Patent number 4,172,694
- Issue date Oct 30, 1979
- The Nash Engineering Company
- Harold K. Haavik
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Liquid ring pumps and compressors using a ferrofluidic ring liquid
- Patent number 4,050,851
- Issue date Sep 27, 1977
- The Nash Engineering Company
- Harold K. Haavik
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

Information Patent Application
Cooling gas in a rotary screw type pump
- Publication number 20010031214
- Publication date Oct 18, 2001
- The Nash Engineering Company
- Harold K. Haavik
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Harold K. Haavik

Person

Patents Grantslast 30 patents

Cooling gas in a rotary screw type pump

Mixed flow liquid ring pumps

Fluid bearing pad arrangement for liquid ring pump systems

Liquid ring pumps with pressurized gas supported rotating liners

Liquid ring pumps with rotating liners

Two-stage liquid ring pump with rotating liner in first stage suppo...

Bearing fluid distribution systems for liquid ring pumps with rotat...

Centrifugal pump with sealing means

Liquid ring pumps having rotating lobe liners with end walls

Liquid ring compressors

Liquid ring pump with vanes in liquid ring

Two-stage liquid ring pump with improved intrastage and interstage...

Two stage liquid ring pump

Long liquid ring pumps and compressors

Liquid ring pumps and compressors using a ferrofluidic ring liquid

Patents Applicationslast 30 patents

Cooling gas in a rotary screw type pump