Handling: hand and hoist-line implements – Magnet
Reexamination Certificate
2006-11-07
2006-11-07
Kramer, Dean (Department: 3652)
Handling: hand and hoist-line implements
Magnet
Reexamination Certificate
active
07131678
ABSTRACT:
The magnetic tool has a narrow, elongate, rigid shank having a handgrip end and a selectively extendible and retractable magnet at the opposite working end. Various mechanisms are provided at the handgrip end to extend and retract the magnet. The working end of the tool may be provided with a polygonal (e.g., hexagonal, square, etc.) receptacle for the removable installation of a tool bit or square drive socket therein. The retracted magnet retains the bit or socket within the receptacle as desired. The magnetic tool is particularly well-adapted for insertion into a pushrod passage in the cylinder head of an overhead valve engine, for retracting a valve lifter away from the lobe of the camshaft to facilitate removal and replacement of the camshaft. A linear scale depth gauge may be provided, and an adjustably positionable collar may be provided to hold the tool with the lifter retracted.
REFERENCES:
patent: 1068792 (1913-07-01), Mackintosh
patent: 2501757 (1950-03-01), Cagle
patent: 2547990 (1951-04-01), Willms
patent: 2834241 (1958-05-01), Chowning
patent: 3789336 (1974-01-01), Gordin
patent: 4575143 (1986-03-01), Nast
patent: 5169193 (1992-12-01), Stelmach
patent: 5265887 (1993-11-01), Stelmach
patent: 5345636 (1994-09-01), Lamons
patent: 5472253 (1995-12-01), Resor
patent: D378337 (1997-03-01), Reynolds et al.
patent: 5647623 (1997-07-01), Shiao
patent: 5799999 (1998-09-01), Schneider et al.
patent: 5810409 (1998-09-01), Hardie
patent: 5945901 (1999-08-01), Coleman, Jr. et al.
patent: 6048073 (2000-04-01), Shiao
patent: 6065787 (2000-05-01), Jarosch
patent: D446701 (2001-08-01), Coleman, Jr. et al.
patent: 6315340 (2001-11-01), Chen
patent: 6325433 (2001-12-01), Nicholson et al.
patent: 6705654 (2004-03-01), Slauf
patent: 2003/0173788 (2003-09-01), Fussell et al.
patent: 929300 (1955-06-01), None
patent: 584156 (1947-01-01), None
patent: 639039 (1950-06-01), None
Kramer Dean
Litman Richard C.
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