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US 4,984,757 AGranted
Trapeze mount for airborne tree trimming apparatus
OwnerJoe Hartung, William C. Cox, IIIinventors
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OwnerJoe Hartung, William C. Cox, IIIinventors
Estimating the term…
A trapeze mount for mounting an airborne tree trimming apparatus on a helicopter or the like and operating the airborne tree trimming apparatus independently of the helicopter. The trapeze mount is designed to suspend a boom from the helicopter by means of a boom mount bar, which boom supports a plurality of circular saw blades arranged in tandem, coplanar relationship. The trapeze mount includes a pair of downwardly-extending pivot bars, the upper ends of which are pivotally attached to the helicopter fuselage and the opposite, lower ends connected by a cross-bar. A sliding collar is pivotally mounted on the cross-bar by means of a trapeze pivot joint and the sliding collar slidably engages the boom mount bar, which is pivotally attached at one end to a conventional quick-release hook mounted on the fuselage of the helicopter between the pivot bars. The opposite end of the boom mount bar is attached to a lower pivot collar which carries the upper end of the boom upon which the circular saw blades are mounted. The trapeze mount facilitates rearward extension of the boom mount bar, boom and circular saw blades when the airborne tree trimming apparatus is placed on or removed from supports located on the ground, and downward disposition of the boom mount bar, boom and circular saw blades when the airborne tree trimming apparatus is suspended in functional cutting configuration as the helicopter is airborne.
A trapeze mount for an airborne tree trimming apparatus having a boom adapted for pivotal mounting to a helicopter, said trapeze mount comprising a boom mount bar having one end pivotally attached to the helicopter, with the opposite end of said boom mount bar attached to the boom, pivot bar means pivotally carried by the helicopter and collar means pivotally attached to said pivot bar means, said collar means slidably engaging said boom mount bar, whereby the boom is selectively adapted for deployment downwardly in cutting configuration when the helicopter is airborne and in substantially horizontal configuration for selective attachment to the helicopter and detachment from the helicopter.
A trapeze mount for an airborne tree trimming apparatus having a boom adapted for pivotal suspension from a quick-release hook mounted on a helicopter, said trapeze mount comprising trapeze means pivotally carried by the helicopter;
A trapeze mount for an airborne tree trimming apparatus having a cutting boom adapted for pivotal suspension from a helicopter by means of a quick-release hook, said trapeze mount comprising a pair of pivot bars having one end pivotally carried by the helicopter in spaced relationship;
Dependencies are inferred from the claim text.