DOUGLAS GLEN MURRAY
Pilots at Interlaken Dr, Lodi, CA

License number
California A1358551
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
1121 Interlaken Dr, Lodi, CA 95242

Professional information

Douglas Murray Photo 1

Heavy Equipment Trailer With Deck Extension

US Patent:
8152200, Apr 10, 2012
Filed:
Jun 23, 2009
Appl. No.:
12/489919
Inventors:
Douglas Glen Murray - Lodi CA, US
David Lee Trowbridge - Lodi CA, US
Assignee:
Harley Murray, Inc. - Stockton CA
International Classification:
B62D 21/00, B62D 53/06
US Classification:
280789, 2801492, 2804231, 280785, 280800, 296 2609
Abstract:
Heavy equipment trailer and deck extension. The trailer has an elongated main deck with longitudinally extending frame members on opposite sides thereof, and ground engaging wheels toward the rear of the main deck. The extension has longitudinally extending frame members aligned with the frame members of the main deck, and coupling pins extend between the frame members of the main deck and the extension in load supporting relationship, with lock pins preventing longitudinal separation of the main deck and the extension. C-shaped channel members extend along the upper, lower, and outer sides of the extension, past the coupling pins, and along upper, lower, and outer side portions of the frame members of the main deck to hold the frame members in alignment and prevent sagging under load conditions.


Douglas Murray Photo 2

Hydraulically Operated Gooseneck Trailer And Latch Assembly

US Patent:
2012005, Mar 8, 2012
Filed:
Sep 2, 2010
Appl. No.:
12/874937
Inventors:
David Lee Trowbridge - Wilton CA, US
Douglas Glen Murray - Lodi CA, US
International Classification:
B62D 53/06
US Classification:
2804412
Abstract:
Gooseneck trailer having a horizontally extending deck with a plurality of longitudinally extending frame members including outer side rails which extend along opposite sides of the deck, lower gooseneck beams rigidly connected the outer deck rails by couplings that can be selectively engaged and disengaged, elongated upper gooseneck beams pivotally connected to the lower beams, with one end of each of the upper beams being pivotally connected to a pulling vehicle, operating cylinders connected between the upper and lower beams for raising and lowering the lower beams and the trailer deck when the upper beams are connected to the pulling vehicle, and latches for locking the upper and lower beams in different positions relative to each other. Each of the latches has first and second elongated ratchet blocks disposed side-by-side with mating teeth along confronting edges of the two blocks and upper and lower ends of the blocks being pivotally connected to respective ones of the beams for movement longitudinally with the beams and laterally toward and away from each other, and actuators for pivoting the blocks to bring the teeth on the two blocks into and out of engagement with each other to lock the beams in the different positions.


Douglas Murray Photo 3

Gooseneck Trailer With Coupling Link And Latch Actuators

US Patent:
2012005, Mar 8, 2012
Filed:
Sep 2, 2010
Appl. No.:
12/874923
Inventors:
David Lee Trowbridge - Wilton CA, US
Douglas Glen Murray - Lodi CA, US
International Classification:
B62D 53/06
US Classification:
2804412
Abstract:
Trailer with a detachable gooseneck having a deck supported toward the rear by ground engaging wheels, mating surfaces on the gooseneck and the deck which abut against each other when the gooseneck is attached to the deck, coupling pins extending along spaced apart, parallel axes from the gooseneck and the deck on opposite sides of the abutting surfaces, a coupling link movable along the pin on the gooseneck between a first position in which the link engages the pin on the deck and a second position in which the link is disengaged from the pin on the deck, and an actuator for moving the coupling link between the first and second positions. A latch hook is rotatively mounted on the deck to the rear of the abutting surfaces for engagement with a laterally extending latch bar which depends from the gooseneck, and a pneumatic actuator is operatively connected to the latch hook for moving the latch hook into and out of engagement with the latch bar.