Tool driving or impacting – Impacting devices – With impact cushioning means
Patent
1994-09-16
1997-06-17
Gorski, Joseph M.
Tool driving or impacting
Impacting devices
With impact cushioning means
29252, 227147, B25D 904, B25D 1700
Patent
active
056389094
ABSTRACT:
This invention relates to an attachment device for a pneumatic hammer tool used to remove a bolt or rod being held in a fixture. The low cost attachment device consists of an alignment sleeve and a tapered coil spring which aligns a driving bit of an air hammer to the bolt to be driven from the fixture and absorbs the shock of the impact during the driving operation. As the driving bit reaches the end of its travel, the addition of a spacer bar allows the driving operation to continue. A method for removal of the bolt is disclosed to facilitate the removal operation. This method relies on the contact of the alignment sleeve with the fixture and the compression of the spring to facilitate quick removal of the bolt. An application of this apparatus has been used to remove a spring attachment bolt on a truck trailer reducing the time for removal to 30 minutes from 3 to 4 hours.
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patent: 2272760 (1942-02-01), Allen
patent: 2356314 (1944-08-01), Gray et al.
patent: 2671216 (1954-03-01), Fox
patent: 2890455 (1959-06-01), Etzkorn
patent: 3219248 (1965-11-01), Krewson, Jr.
patent: 4646852 (1987-03-01), Cotta
patent: 5450911 (1995-09-01), Gustafsson
Flint Cort
Gorski Joseph M.
Jaudon Henry S.
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