Fluid type pusher with thrust indicator

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – With means to indicate application of predetermined... – Including gauge means

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Details

411 8, 411917, F16B 3102

Patent

active

055539823

ABSTRACT:
An annular fluid type pusher for tightening a part on a shaft comprises, a body mounted on the shaft, a pushing piece for pushing the part with a fluid pressure, a sealed fluid path formed annular in the body for sealingly containing a fluid and slidably holding said pushing piece in part, a fluid pressure adjusting section for adjusting the fluid pressure, an indicator cylinder chamber communicated with the sealed fluid path, an indicator piston slidably provided in the cylinder chamber, a spring to urge the piston against the fluid pressure, and a thrust indicating bar. Thrust graduation lines have been marked on the thrust indicating bar. And one end portion of the thrust indicating bar is connected to the piston, and the other end portion is provided in such a manner as to be protruded in association with the movement of the piston which is slidably moved in proportion of the fluid pressure.

REFERENCES:
patent: 1631714 (1927-06-01), Wellman
patent: 2571265 (1951-10-01), Leufuen
patent: 3033597 (1962-05-01), Miller
patent: 3435777 (1969-04-01), Schaaf
patent: 3463044 (1969-08-01), Rossman et al.
patent: 3779080 (1973-12-01), Smith
patent: 4777828 (1988-10-01), Ferris
patent: 5046906 (1991-09-01), Bucknell

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