Tools – Wrench – screwdriver – or driver therefor – Rigid jaws
Patent
1985-09-18
1986-07-08
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Rigid jaws
811243, B25B 1306
Patent
active
045986169
ABSTRACT:
A wrench opening (14,14') is disclosed as having particular utility for use with a socket (10) or closed end wrench (34) and includes inwardly convex engagement surfaces (16) defining a closed shape and having continuously curved end portions (16a,16b) that provide greater surface-to-surface engagement with a nut or bolt head to be torqued than is possible with conventional flat engagement surface portions. The curvature of the engagement surfaces (16) is selected to provide maximum surface-to-surface engagement when normal tolerance deviations are involved. Connecting surfaces (20 or 22) extending between the engagement surfaces (16) are constructed to provide improved stress distribution and reduced tooling cost.
REFERENCES:
patent: 736687 (1903-08-01), Chandler
patent: 1954141 (1934-04-01), Miquelon
patent: 2652735 (1953-09-01), Wilder
patent: 2685219 (1954-08-01), Diebold
patent: 2692522 (1954-10-01), Reyner
patent: 3125910 (1964-03-01), Kavalar
patent: 3242775 (1966-03-01), Hinkle
patent: 3466956 (1969-09-01), Bowers
patent: 3495485 (1970-02-01), Knudsen et al.
patent: 3577817 (1971-05-01), Jennings
patent: 3695124 (1972-10-01), Myers
patent: 3903764 (1975-09-01), Andersen
patent: 3908488 (1975-09-01), Andersen
patent: 4253353 (1981-03-01), Symbol
patent: 4512220 (1985-04-01), Barnhill, III et al.
LandOfFree
Wrench opening does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wrench opening, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wrench opening will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1445727