Tools – Wrench – screwdriver – or driver therefor – Rigid jaws
Reexamination Certificate
2006-02-14
2006-02-14
Hail, III, Joseph J. (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Rigid jaws
C081S176100, C081S176200, C081S119000, C081SDIG009, C411S402000, C411S403000, C411S405000, C411S410000, C411S427000, C411S919000
Reexamination Certificate
active
06997085
ABSTRACT:
A threaded fastener capable of being reduced in size and weight. A pair of side wall surfaces of each of six radially outwardly projecting, torque transmitting portions lie on straight lines passing through the center line in a cross section perpendicular to the center line so as to transmit torque through the side wall surface, whereby the direction of a surface orthogonal force N applied to a force-applied point P by a wrenching tool coincides with the direction of an effective wrenching force F. This arrangement reduces an operation force required for rotating the wrenching tool and accordingly the load acting on each of the torque transmitting portions, in comparison with a conventional hexagonal head. That is, it is possible to reduce the diameter of the head portion of the threaded fastener and the size and weight of the head portion, while avoiding deformation of the side wall surfaces through which the torque is transmitted.
REFERENCES:
patent: D203947 (1966-03-01), Pick
patent: 3354757 (1967-11-01), Grimm et al.
patent: 3885480 (1975-05-01), Muenchinger
patent: 4361412 (1982-11-01), Stolarczyk
patent: 5327696 (1994-07-01), McBride
patent: 5350266 (1994-09-01), Espey et al.
patent: 6036419 (2000-03-01), Lanham et al.
patent: 1.427.828 (1966-01-01), None
patent: A 52-132971 (1951-11-01), None
patent: A 54-95670 (1952-12-01), None
patent: S42-15459 (1967-09-01), None
patent: S43-20671 (1968-08-01), None
patent: S58-108609 (1983-07-01), None
patent: H02-132111 (1990-11-01), None
WO 99/27261; Amis, James P., High-Torque Resorbable Screws, Mar. 6, 1999, Internationa Application Published Under The Patent Cooperation Traty (PCT).
Hail III Joseph J.
Muller Bryan
Oliff & Berridg,e PLC
OSG Corporation
LandOfFree
Threaded-fastener wrenching structure, threaded fastener and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Threaded-fastener wrenching structure, threaded fastener and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Threaded-fastener wrenching structure, threaded fastener and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3640436