Joseph Fabyan Phones & Addresses
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484 Crump Rd, Smiths Grove, KY 42171
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Livermore, CA
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Park City, KY
Publications
Us Patents
Locking Apparatus For Gate Valves
View pageUS Patent:
47840374, Nov 15, 1988
Filed:
Dec 28, 1982
Appl. No.:
6/453981
Inventors:
Joseph Fabyan - Livermore CA
Carl W. Williams - Manteca CA
Carl W. Williams - Manteca CA
Assignee:
The United States of America as represented by the United States
Department of Energy - Washington DC
Department of Energy - Washington DC
International Classification:
F15B 1526
US Classification:
91 43
Abstract:
A locking apparatus for fluid operated valves having a piston connected to the valve actuator which moves in response to applied pressure within a cylinder housing having a cylinder head, a catch block is secured to the piston, and the cylinder head incorporates a catch pin. Pressure applied to the cylinder to open the valve moves the piston adjacent to the cylinder head where the catch pin automatically engages the catch block preventing futher movement of the piston or premature closure of the valve. Application of pressure to the cylinder to close the valve, retracts the catch pin, allowing the valve to close. Included are one or more selector valves, for selecting pressure application to other apparatus depending on the gate valve position, open or closed, protecting such apparatus from damage due to premature closing caused by pressure loss or operational error.
Magnetic Shielding
View pageUS Patent:
46981977, Oct 6, 1987
Filed:
Feb 12, 1985
Appl. No.:
6/701010
Inventors:
John A. Kerns - Livermore CA
Roger R. Stone - Walnut Creek CA
Joseph Fabyan - Livermore CA
Roger R. Stone - Walnut Creek CA
Joseph Fabyan - Livermore CA
Assignee:
The United States of America as represented by the United States
Department of Energy - Washington DC
Department of Energy - Washington DC
International Classification:
G21B 100
US Classification:
376142
Abstract:
A magnetically-conductive filler material bridges the gap between a multi-part magnetic shield structure which substantially encloses a predetermined volume so as to minimize the ingress or egress of magnetic fields with respect to that volume. The filler material includes a heavy concentration of single-magnetic-domain-sized particles of a magnetically conductive material (e. g. soft iron, carbon steel or the like) dispersed throughout a carrier material which is generally a non-magnetic material that is at least sometimes in a plastic or liquid state. The maximum cross-sectional particle dimension is substantially less than the nominal dimension of the gap to be filled. An epoxy base material (i. e. without any hardening additive) low volatility vacuum greases or the like may be used for the carrier material. The structure is preferably exposed to the expected ambient magnetic field while the carrier is in a plastic or liquid state so as to facilitate alignment of the single-magnetic-domain-sized particles with the expected magnetic field lines.