Supports – Stand and bracket – Having adjustable bracket
Reexamination Certificate
1999-03-12
2001-06-19
Braun, Leslie A. (Department: 3632)
Supports
Stand and bracket
Having adjustable bracket
C248S292110
Reexamination Certificate
active
06247673
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to a support stand, particularly a support stand for an operating microscope. Alongside expensive structures with counterbalances for support stands, there are also simpler support structures in the area of operating microscopy which manage without vertical parallel supports and which use a gas-loaded spring, or the like, as a counterweight for holding the operating microscope in balance. Reference is made in this regard to the applicant's patent U.S. Pat. No. 5,213,293. This kind of relatively simple support stand is designed in such a way that the stand foot has enough stability for the stand not to tip when conventional operating microscopes are employed.
Known from U.S. Pat. No. 5,257,998 is a support stand for a stereotaxis system that exhibits a support stand foot and a standard assigned to it. A carrying arm with a counterbalance is secured to the stand. The counterbalance is equipped as a functional housing containing different electrical structural components. The large swivel area of the stand gives the foot a symmetrical design, and the foot is consequently very large and heavy.
SUMMARY OF THE INVENTION
The invention is based on the problem of modifying the stand design in a way that permits it to carry heavier weights in the area of the load, particularly the area of the operating microscope, and/or to give the foot of the stand a lighter design.
A certain problem arises with stand feet: the further the feet project laterally into space, the more they hinder the personnel. An attempt is therefore made to limit the width of the feet. A further task of the present invention is to meet the need for a lighter foot.
These problems are solved by the features indicated in the characterizing portion of patent claim
1
.
The combination of features shown in claim
1
yields a design that is simple, provides a practical counterbalance, and exhibits a reduced tendency to tip. Elaborations of the invention emerge from the dependent claims. Together with the drawings, the specialist will see a novel stand design that does justice both to the problems addressed by the invention and the need to equip conventional stands with electronic equipment.
REFERENCES:
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patent: 3790773 (1974-02-01), Sapper
patent: 3918672 (1975-11-01), Torn et al.
patent: 4515333 (1985-05-01), Pugh et al.
patent: 4523732 (1985-06-01), Biber et al.
patent: 4821159 (1989-04-01), Pike
patent: 5213293 (1993-05-01), Muentener et al.
patent: 5257998 (1993-11-01), Ota et al.
patent: 5288043 (1994-02-01), Tigliev
patent: 5448464 (1995-09-01), Moss
patent: 5477443 (1995-12-01), Cvek
patent: 5630566 (1997-05-01), Case
patent: 5655741 (1997-08-01), Watkins
patent: 5695279 (1997-12-01), Sonnleitner
patent: 3808327 (1988-09-01), None
Baxter Gwendolyn
Braun Leslie A.
Leica Microsystems AG
Simpson, Simpson & Snyder, L.L.P.
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