Snap ring installation tool

Metal working – Means to assemble or disassemble – Spring applier or remover

Patent

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Details

B25B 2714

Patent

active

058625771

ABSTRACT:
A tool is provided for ensuring that a snap ring fitted within an internally opening groove in a cylinder, such as a hydraulic cylinder, is properly seated within the groove. The tool includes a rim defining a radial shoulder and an axial projecting portion. The radial shoulder engages the radial surface of the snap ring to press the snap ring axially against an opposing radial shoulder within the cylinder to help flatten and align the snap ring while the axially projecting portion extends through the snap ring. A handle is mounted on the hub and engages inner ends of radially extending spokes, while a coil spring biases the handle outwardly from the hub to keep the spokes normally withdrawn. Upon pressing the handle axially against the bias of the coil spring, the spokes extend radially to engage the inner periphery of the snap ring to thereby shove the snap ring home within the groove. Upon pulling the handle, the spokes retract out of engagement with the snap ring and the tool is withdrawn from within the snap ring and hydraulic cylinder.

REFERENCES:
patent: 1049173 (1912-12-01), Turek
patent: 2010258 (1935-08-01), Forbes
patent: 2158527 (1939-05-01), Rose
patent: 2380068 (1945-07-01), Patton
patent: 3479722 (1969-11-01), Maness
patent: 3654686 (1972-04-01), McFarland et al.
patent: 4724608 (1988-02-01), Parrott
patent: 5347697 (1994-09-01), Stallings

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