Chain saw with a bifurcated diaphragm means providing a coaxial

Cutlery – Cutting tools – Saw

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267137, 173162, B27B 1700, F16F 136

Patent

active

039721191

ABSTRACT:
A vibration-isolation system uniquely adapted for use in connection with chain saws where vibration-isolation units resiliently interconnect a vibration-generating engine and cutter chain assembly with an inertia-providing handle assembly. The improvement of the invention resides in a bifurcated, resilient diaphragm means constituting at least one such vibration-isolating unit. The improved bifurcated, resilient diaphragm means includes a resilient, generally annular base and first and second axially displaced, first and second resilient generally toroidal segments located on opposite sides of a generally annular, vibration and deflection-accommodating recess means. The bifurcated diaphragm means may also be considered as including a resilient, generally annular base, with first and second resilient, generally annular rim means being supported by first and second resilient cantilever means located on opposite axial sides of the generally annular, vibration and deflection-accommodating recess means.

REFERENCES:
patent: 3690640 (1972-09-01), Pineau
patent: 3728793 (1973-04-01), Makinson
patent: 3813776 (1974-06-01), Frederickson
patent: 3831920 (1974-08-01), Meldrum
patent: 3845827 (1974-11-01), Schulin
patent: 3911580 (1975-10-01), Bailey

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