Adjustable ratchet wrench

Details Adjustable ratchet wrench Adjustable ratchet wrench

1991-01-14

1991-12-31

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

81 632, B25B 1300

Patent

active

050761218

ABSTRACT:
An adjustable ratchet wrench has a housing carried by a handle. The housing has a generally cylindrical chamber which carries a disc which in turn supports three equidistantly spaced jaws. The mounting disc is connected to the handle by a ratchet assembly whose setting determines the direction in which the tool may be used to turn the nut or other workpiece. The housing also carries a cam disc that engages the jaws and opens and closes them depending upon the direction in which it is rotated. A second ratchet mechanism determines the direction in which the cam disc may be rotated with respect to the mounting disc so as to open and close the jaws.

REFERENCES:
patent: 877773 (1908-01-01), Holm
patent: 912117 (1909-02-01), Green
patent: 915443 (1909-03-01), Jones
patent: 1000277 (1911-08-01), McCoy
patent: 1074594 (1913-10-01), Andersen
patent: 1274337 (1918-07-01), Schwartz
patent: 1450641 (1923-04-01), Ograbisz
patent: 2580247 (1951-12-01), Secondi et al.
patent: 3377893 (1968-04-01), Shorb
patent: 3664213 (1972-05-01), Anati

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