Tube nut wrench

Details Tube nut wrench Tube nut wrench

1996-09-19

1997-06-10

Hail, III, Joseph J.

Tool driving or impacting

Automatic control of power operated means

173176, 173216, 173217, 81 5713, B25B 2100

Patent

active

056366981

ABSTRACT:
A separate thumb accessible pushbutton operated circuit revises the power operated tube nut wrench at a reduced speed to intercept a home stop wherein after the wrench is automatically shut off on the sensing of current rise in the motor on stall to avoid over stress and unnecessary heat buildup.

REFERENCES:
patent: 3987692 (1976-10-01), Lesner et al.
patent: 4064772 (1977-12-01), Boyd et al.
patent: 4493377 (1985-01-01), Gunther et al.
patent: 4858312 (1989-08-01), Van Naarden
patent: 5062491 (1991-11-01), Takeshima et al.
patent: 5105519 (1992-04-01), Doniwa
patent: 5154242 (1992-10-01), Soshin et al.
patent: 5285857 (1994-02-01), Shimada
patent: 5440215 (1995-08-01), Gilmore

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