Lynn A Dietrich

US Patent:

42967732, Oct 27, 1981

Filed:

Feb 12, 1979

Appl. No.:

6/011762

Inventors:

Ronald W. Harshman - Greencastle PA
Lynn A. Dietrich - Chambersburg PA

Assignee:

Walter Kidde & Company, Inc. - Clifton NJ

International Classification:

F16K 2900

US Classification:

137312

Abstract:

A manually operable hydraulic selector valve includes a plurality of two-way spool valves which are normally closed and are selectively shiftable individually or in pairs by a joy stick operator to open positions whereby motive fluid can be delivered to a given instrumentality such as the jack cylinder of a construction crane outrigger arm. The joy stick carries a conical disc which cammingly engages drive pin extensions of the individual spool valves. A positive stop for the conical disc is afforded by contact of the disc with the mounting plate of the selector valve. The selector valve is employed with an associated two-way directional control valve.

US Patent:

44211350, Dec 20, 1983

Filed:

Feb 4, 1981

Appl. No.:

6/231404

Inventors:

Ronald W. Harshman - Greencastle PA
Lynn A. Dietrich - Chambersburg PA

Assignee:

Walter Kidde & Company, Inc. - Clifton NJ

International Classification:

F16K 2900

US Classification:

137312

Abstract:

A manually operable hydraulic selector valve includes a plurality of two-way spool valves which are normally closed and are selectively shiftable individually or in pairs by a joy stick operator to open positions whereby motive fluid can be delivered to a given instrumentality such as the jack cylinder of a construction crane outrigger arm. The joy stick carries a conical disc which cammingly engages drive pin extensions of the individual spool valves. A positive stop for the conical disc is afforded by contact of the disc with the mounting plate of the selector valve. The selector valve is employed with an associated two-way directional control valve.