Supports – Stand – Standard type
Reexamination Certificate
2007-04-17
2007-04-17
King, Anita M. (Department: 3632)
Supports
Stand
Standard type
C248S412000, C248S157000, C403S104000
Reexamination Certificate
active
11078166
ABSTRACT:
A quick-acting telescopic tube has a stationary tube, a detent lining, an extension tube, a lock activating assembly, a bottom plug, an activating rod, a spring and a ball. The detent lining is mounted securely in the stationary tube and has multiple detents. The extension tube is mounted movably in the detent lining and has a top and a bottom. The lock activating assembly is mounted around the top of the extension tube and has a lever extending into the extension tube. The bottom plug is mounted securely in the bottom of the extension tube and has a transverse through hole. The activating rod is mounted in the extension tube, connects to the lever and has a locking piston with an annular recess. The ball is mounted in the transverse through hole and selectively in either one of the detents or the annular recess.
REFERENCES:
patent: 2658777 (1953-11-01), Rauglas
patent: 3604734 (1971-09-01), Friedman et al.
patent: 4033543 (1977-07-01), Ponzellini
patent: 4318526 (1982-03-01), Werner
patent: 4526334 (1985-07-01), Rantakari
patent: 4693442 (1987-09-01), Sills
patent: 4744690 (1988-05-01), Hsieh
patent: 4860987 (1989-08-01), Werner
patent: 5078349 (1992-01-01), Smith
patent: 5729865 (1998-03-01), Stoddart
patent: 6412737 (2002-07-01), Minagawa
patent: 6546596 (2003-04-01), Grote et al.
patent: 6609686 (2003-08-01), Malizia
patent: 6698698 (2004-03-01), Hsieh
patent: 2397164 (2004-07-01), None
King Anita M.
Merchant & Gould P.C.
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