Richard A. Spaulding

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Hanover, NH, US

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Patents Grantslast 30 patents

Information Patent Grant
Plasma-arc torch with gas cooled blow-out electrode
- Patent number 4,748,312
- Issue date May 31, 1988
- Thermal Dynamics Corporation
- Bruce O. Hatch
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Plasma-arc torch with sliding gas valve interlock
- Patent number 4,691,094
- Issue date Sep 1, 1987
- Thermal Dynamics Corporation
- Bruce O. Hatch
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Plasma-arc torch interlock with pressure sensing
- Patent number 4,663,512
- Issue date May 5, 1987
- Thermal Dynamics Corporation
- Robert D. Kneeland
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Plasma-arc torch interlock with flow sensing
- Patent number 4,663,515
- Issue date May 5, 1987
- Thermal Dynamics Corporation
- Robert D. Kneeland
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Plasma torch with a common gas source for the plasma and for the se...
- Patent number 4,581,516
- Issue date Apr 8, 1986
- Thermal Dynamics Corporation
- Bruce O. Hatch
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR