Open-end wrench

Details Open-end wrench Open-end wrench

1986-06-16

1988-10-11

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

811242, B25B 1302

Patent

active

047762446

ABSTRACT:
The open-end wrench has a pair of jaws with parallel planar jaw surfaces. In each jaw surface is a configured notch having a planar drive surface, a clearance surface and a spacing surface between the drive surface and the clearance surface. The two clearance surfaces are on segments of a circle having a diameter greater than the across-corners dimension of the fastener to be tightened by the wrench. The distance between the planes of the driving surfaces is slightly greater than the across-sides dimension of the fastener. The spacing surface in each notch is a segment of a circle having a relatively small radius of curvature and is tangent to the associated clearance surface.

REFERENCES:
patent: 2652735 (1953-09-01), Wilder
patent: 2685219 (1954-08-01), Diebold
patent: 3242775 (1966-03-01), Hinkle
patent: 3273430 (1966-09-01), Knudsen et al.
patent: 3495485 (1970-02-01), Knudsen et al.
patent: 3602073 (1971-08-01), Siwersson
patent: 3620107 (1971-11-01), Evans
patent: 3745859 (1973-07-01), Evans et al.
patent: 3757614 (1973-09-01), Evans
patent: 3762244 (1973-10-01), Evans
patent: 3785226 (1974-01-01), Ward
patent: 3850057 (1974-11-01), Evans
patent: 3858464 (1975-01-01), Evans
patent: 3881377 (1975-05-01), Evans et al.

Affiliated with

Also associated with

Rating

Open-end wrench does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Open-end wrench, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Open-end wrench will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1951059