Portable one-hand operated rotary torque producing tool

Details Portable one-hand operated rotary torque producing tool Portable one-hand operated rotary torque producing tool

1979-10-22

1981-02-10

Feldbaum, Ronald

Tool driving or impacting

Drive control operable by hand engaging manipulating handle

74128, 81 5739, B23B 4500, B27C 308

Patent

active

042496179

ABSTRACT:
A rotary torque producing tool having a pistol grip handle with a manually grippable and displaceable part, a rotary tool operating shaft, clutch members mounted for rotation in surrounding relation to the shaft and being operatively connected to the displaceable handle part for rotation of the clutch members upon gripping of the handle and part, the drive means providing rotation of the clutch members in opposite directions about the shaft upon gripping displacement of the handle part, and means selectively engaging the clutch members and shaft for obtaining optional direction of rotation of the shaft. The drive structure includes a barrel member mounted for longitudinal reciprocation coaxially of the shaft and being formed with a pair of reversely configured spiral cams which are operatively connected by cam followers to the clutch members. The clutch members are formed to provide unidirectional driving connections to the shaft, i.e. a locked driving connection upon rotation of the clutch members in one direction and a detached free movement upon rotation of the clutch members in a reverse direction.

REFERENCES:
patent: 1391619 (1921-09-01), Edwinson
patent: 2708345 (1955-05-01), Miles
patent: 2708581 (1955-05-01), Barnes
patent: 2726563 (1955-12-01), Blackburn
patent: 3286560 (1966-11-01), Murray
patent: 3557644 (1971-01-01), Gregory
patent: 3616714 (1971-11-01), Gregory
patent: 3941017 (1976-03-01), Lenker et al.
patent: 4108027 (1978-08-01), Lenker
patent: 4141262 (1979-02-01), Smith

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