Abstract: An electronic engine protector including an electronic pressure transducer that produces variable voltage output in proportion to the differential pressure of the engine crankcase and the atmosphere. Circuitry is provided for selectively adjusting the pressure trip point which represents the faulted mode wherein the engine's fuel solenoid is turned off. Further, circuitry provides for a selectively adjustable time delay to prevent engine shut down due to momentary engine overloads, atmospheric phenomena, or other such temporary conditions that generate a false shut down signal.

Abstract: This invention relates to an articulated boom structure unit (15) adapted to be mounted on an ocean going lift barge (16) for maintenance of an offshore station (14), and having a platform (17) vertically movable relative to ocean floor engageable leg units (18); the boom structure (15) comprising a pedestal (23) mounted for rotation on the platform (17), with a first boom unit (26) pivotally mounted on the pedestal for vertical, pivoting movement, a mounting (29) supported on the outer end of the first boom unit (26) and held on a vertical axis, a second telescoping boom unit (32) connected at an inner end on said mounting (29) for movement in a horizontal plane, a third platform boom unit (33) mounted at an inner end to the outer end of the second boom unit (32) and having a parallelogram subassembly (34) as a part thereof movable upwardly and downwardly, and a personnel carrier (21) mounted on an outer end of the subassembly (34), which carrier (21) may be either a bucket or a work platform, with the carri

Abstract: This invention relates to an articulated boom structure (10) which comprises a pedestal (11) mounted for rotation on a main frame (12) mounted in turn on a vehicle (13), with a first boom (14) articulately mounted on the pedestal (11) and adapted to be raised and lowered relative to the pedestal (11), a platform (16) mounted on the outer end of the first boom (14) and adapted to be held in a horizontal plane at all times, a sweep arm (17) connected to the platform (16) above a ring gear (18) rotatably mounted on the platform (16), the sweep arm (17) movable in a horizontal plane at all times, a second boom (19) articulately connected to the outer end of the sweep arm (17) and adapted to be raised and lowered relative thereto, a third boom (21) articulately connected to the outer end of the second boom (19) and adapted to be raised and lowered relative thereto, and a personnel carrier mounted on the third boom (21), which carrier may be either a bucket (22) or a work platform (23); and with a bucket (22) movab