Supports – Stand – Understructure
Patent
1997-05-22
1999-01-12
Ramirez, Ramon O.
Supports
Stand
Understructure
F16M 1126
Patent
active
058576509
ABSTRACT:
This invention provides an extension comprising a first and second side wall each having an aperture, a back wall extending between the first side wall and the second side wall, a spring-loaded releasable lock positioned adjacent to the apertures of the side walls and two retaining posts attached to the back wall near and below the releasable lock. The releasable lock includes a pair of side pins that are each inserted from the corresponding aperture in the first and second side wall into a hole in an adjustable leg of the workpiece. The extension is slid up and down the adjustable leg when the side pins of the releasable lock are moved out of the holes of the adjustable leg and the releasable lock is retained downwards between the retaining posts of the extension. The method of application of the extension to adjustable legs of workpieces is also described.
REFERENCES:
patent: 3294440 (1966-12-01), Broder
patent: 3604734 (1971-09-01), Friedman
patent: 4385849 (1983-05-01), Crain
patent: 4569516 (1986-02-01), Masterson
patent: 4645161 (1987-02-01), Collins
patent: 4648652 (1987-03-01), Van Kuren
patent: 4756386 (1988-07-01), Blanchard
patent: 4776545 (1988-10-01), Miyamoto
patent: 5368126 (1994-11-01), Woodward et al.
patent: 5421272 (1995-06-01), Wilmore
patent: 5513825 (1996-05-01), Gutgsell
patent: 5570968 (1996-11-01), Sassmannshausen et al.
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