Hand-squeeze powered motorless driver

Details Hand-squeeze powered motorless driver Hand-squeeze powered motorless driver

1986-10-28

1988-04-26

Yost, Frank T.

Tool driving or impacting

Drive control operable by hand engaging manipulating handle

81 5739, 74 8915, B25B 1346

Patent

active

047398388

ABSTRACT:
A hand-squeeze driver tool which serves to convert squeezing motion into rotary motion on a variable torque basis, with the torque being inversely related to the driving speed. The torque versus driving speed relationship is determined by the position of a squeeze lever as it is displaced from its most extended position. Two distinct zones are provided as the squeeze lever is so displaced, namely a high torque low speed zone, and a low torque high speed zone. The provision of the high torque low speed initial zone, followed by the low torque high speed zone permits the operator intuitively to take advantage of the variable torque feature of the invention, which is provided by a traveling fulcrum mechanism incorporating two interacting levers. The tool of the invention may be constructed to receive standard format driver bits, permitting it to be used in a wide variety of different applications.

REFERENCES:
patent: 3049018 (1962-08-01), Lusskin et al.
patent: 4249617 (1981-02-01), Cox, Jr.
patent: 4524650 (1985-06-01), Marks

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