Rotary power tool with vibration damping

Details Rotary power tool with vibration damping Rotary power tool with vibration damping

1988-09-01

1990-03-06

Yost, Frank T.

Tool driving or impacting

Including means to vibrationally isolate a drive means from...

173169, 51170T, E21B 300

Patent

active

049057723

ABSTRACT:
A rotary power tool of the type having a cavity in which is housed a motor containing a rotary shaft is improved by the use of vibration-damping material interposed between the interior of the cavity and the exterior of the motor housing. In one instance of a tool in which the motor is of the air-driven type, the motor housing and casing are ported and the vibration-damping material is configured to enable communication among the ports. In one form of design, the vibration-damping material comprises a sleeve fitting the casing cavity but annularly spacedly surrounding the motor housing but that housing includes axially spaced apart rings of vibration-damping material that tightly encircle the housing and also tightly fit within the sleeve.

REFERENCES:
patent: 3934657 (1976-01-01), Danielson
patent: 4635732 (1987-01-01), Gotsch et al.

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