Mark J Gucker

US Patent:

56090200, Mar 11, 1997

Filed:

May 15, 1995

Appl. No.:

8/441581

Inventors:

John Jackson - Renton WA
Mark J. Gucker - Kirkland WA
Mark H. Smith - Birmingham AL

Assignee:

The Boeing Company - Seattle WA

International Classification:

F02K 302

US Classification:

602262

Abstract:

A thrust reverser synchronization shaft lock system that includes a sync lock control valve (50) and two hydraulically controlled sync locks (60) attached to the synchronization shafts (5) of a jet engine thrust reverser system, is disclosed. The thrust reverser system further comprises an isolation valve (45), a directional control valve (47), a plurality of actuators (19), and synchronization shafts (5). The sync locks (60) are capable via the synchronization shafts (5) of preventing the actuators (19) from deploying the thrust reversers of the jet engines. The sync locks (60) remain in a locked state until an independent control signal sent from the flight deck positively instructs the sync lock control valve (50) to unlock the sync locks (60), ensuring that the unlocking of the sync locks (60) corresponds to a valid thrust reverser deploy signal. The sync locks (60) each comprise a housing (65), a connection means to one of the synchronization shafts (5), a rotating jaw (75) for connection to one of the synchronization shafts (5), a sliding jaw (81), an unlock latch (106), a lock spring (87), and a manual release mechanism (99). Normally the lock spring (87) causes teeth on the sliding jaw (81) to engage teeth on the rotating jaw (75).

US Patent:

59442859, Aug 31, 1999

Filed:

Jun 19, 1997

Appl. No.:

8/879839

Inventors:

Wilson M. Royer - Renton WA
Mark J. Gucker - Kirkland WA

Assignee:

The Boeing Company - Seattle WA

International Classification:

B64C 114
F15B 1108

US Classification:

2441294

Abstract:

A selectively actuatable pressure relief valve (110) includes a housing (112) that defines an annular projection (118), an inlet port (120) in the lower surface (122), and a relief vent (124) in the sidewall. A first plunger (128) and a second plunger (138) are longitudinally disposed within the housing and are actuatable between an open position and closed position. The valve is normally biased in the open position by a pair of springs (136 and 146). The valve may be actuated between the open and closed positions by a solenoid (148) or may be locked into the closed position by the manual override device (154). When the valve is in the closed position, the spring may be overcome by the fluid pressure exceeding a predetermined limit, thereby displacing the valve into the open position and providing high pressure relief.