Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Reexamination Certificate
2007-08-28
2007-08-28
Thomas, David B. (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Having work engaging and force exerting portion inserted...
C081S438000
Reexamination Certificate
active
10556304
ABSTRACT:
Provided is a bit holder device which is capable of driving a screw into a workpiece, while holding the screw having a groove in which a bit body is inserted, and which makes it possible to change the bit body without removing it from a chuck of an electric tool, etc.A bit holder device facilitating the attachment and detachment of a cylindrical body is also provided.A bit holder device for driving a screw, while holding the screw against detachment from a bit body with retaining a state where an end of the bit body is inserted in a groove on a head of the screw, has a cylindrical cover member removably fitted about the bit body from the end of the bit body, the cover member has an end including a magnetic attracting portion for magnetically attracting the head of the screw, and the bit body protrudes from the end of the cover member.
REFERENCES:
patent: 2276470 (1942-03-01), Dodelin
patent: 2300308 (1942-10-01), Ojalvo
patent: 2660080 (1953-11-01), De Kam
patent: 2718806 (1955-09-01), Clark
patent: 2782823 (1957-02-01), Williams, Jr
patent: 3392767 (1968-07-01), Stillwagon, Jr.
patent: 3707894 (1973-01-01), Stillwagon, Jr.
patent: 5012708 (1991-05-01), Martindell
patent: 5724873 (1998-03-01), Hillinger
patent: 5806381 (1998-09-01), Lin
patent: 5996452 (1999-12-01), Chiang
patent: 6154108 (2000-11-01), Huang
patent: 6209426 (2001-04-01), Takahashi
patent: 6530299 (2003-03-01), Liu
patent: 6666114 (2003-12-01), Lin
patent: 6684740 (2004-02-01), Lin
patent: 6701809 (2004-03-01), Huang
patent: 6931967 (2005-08-01), Chang
patent: 2003/0131694 (2003-07-01), Lin
patent: 19907837 (2000-09-01), None
patent: 10148943 (2002-11-01), None
patent: 86352 (1983-08-01), None
patent: 1027959 (2000-08-01), None
patent: 1260319 (2002-11-01), None
patent: 153988/1982 (1984-04-01), None
patent: 2000-246658 (2000-09-01), None
patent: 2000-308974 (2000-11-01), None
Birch & Stewart Kolasch & Birch, LLP
Thomas David B.
Vessel Industrial Co., Ltd.
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