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US 4,176,815 AGranted
Variable spring hanger assembly
AssigneeF & S Manufacturing LLC
InventorsThomas Davidson, Charles Cunneen
Life of this patent
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AssigneeF & S Manufacturing LLC
InventorsThomas Davidson, Charles Cunneen
Estimating the term…
A spring hanger assembly for supporting a portion of a pipe line includes a hollow housing having mounted therein a movable upper piston plate and a stationary lower plate, with a coiled compression spring disposed between said plates and urging said upper piston plate in a vertical upward direction. Adjustable hanger means are carried by said upper piston plate and are adapted to be secured to the pipe being supported. The lower plate is affixed to the assembled hanger assembly by means of a plurality of fingers engaging bayonet slots in the lower end portion of the housing. The lower plate has a plurality of partial annular grooves into which a tool may be inserted to compress the spring and allow the fingers to be turned within the bayonet slot in the well-known fashion. Upon removal of the tools the fingers engage the blind slot of the bayonet slot in the well-known fashion.
A variable spring hanger assembly for supporting a pipe, comprising:
A variable spring hanger assembly for supporting a pipe, comprising:
In the method of assembling a variable hanger assembly in which a spring is inserted against an upper piston plate secured to a housing, and a lower plate is secured against a spring, the improvement comprising providing at least two fingers on the lower plate and providing two complimentary bayonet slots having defined therein an open slot and a blind slot, in the lower end of the housing, further providing fragmented annular openings spaced inwardly from the circumference of the lower plate and in substantial alignment with the spring, introducing means through said openings, to force the spring inwardly within the housing, and sufficiently so that when the plate is completely within the open slot, the spring still does not abut the plate, rotating the plate so that the fingers move from the open slot to the blind slot of the bayonet slots, removing the force means so that the spring moves into contact with the lower plate, said plate fingers engaging said blind slot.
Dependencies are inferred from the claim text.