Torque impulse power tool

Details Torque impulse power tool Torque impulse power tool

1989-11-13

1992-01-14

Eley, Timothy V.

Tool driving or impacting

Impacting devices

With anvil arranged to transmit torsional impact to tool

188166, 192170, B25D 1500

Patent

active

050801805

ABSTRACT:
A torque impulse power tool primarily intended for tightening threaded joints comprises a housing (10), a rotation motor (11), a torque impulse generating mechanism (13), and a reduction gearing (12) coupling the impulse mechanism (13) to the motor (11). A torsion spring (21) is associated with the reduction gearing (12) to reduce substantially the difference in deceleration between the motor (11) and the impulse mechanism (13) by yielding elastically to the driving and inertia forces of the motor (11) and the gearing (12) during each impulse generation. The torsion spring (21) is connected to absorb the reaction torque peaks developed in the gearing (12) or the driving torque peaks between the gearing (12) and the impulse mechanism (13).

REFERENCES:
patent: 2662434 (1953-12-01), Burkhardt
patent: 3369615 (1968-02-01), Maffey, Jr. et al.
patent: 4019589 (1977-04-01), Wallace
patent: 4691786 (1987-09-01), Fujita et al.
patent: 4871033 (1989-10-01), Odoni et al.

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