Supports – Stand and bracket – Having vertically adjustable stand
Reexamination Certificate
1999-03-25
2001-04-10
Braun, Leslie A. (Department: 3632)
Supports
Stand and bracket
Having vertically adjustable stand
C248S412000, C211S207000
Reexamination Certificate
active
06213434
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The field of the invention is related to telescopically extendable, vertical weight bearing members, and more particularly to a vertical holding member such as for clothing or garments.
2. Prior Art
It is common in the clothing industry to have a plurality of racks arranged in various areas with clothes such as shirt, pants and coats arranged on opposite sides of the clothing rack. Generally these racks are comprised of tubular structural members which upstand from the floor and include adjustable means such as a spring-loaded pin which can be depressed to move an upper bracket upwardly or downwardly to another pre-drilled aperture in an outside tubular structure to main the rack in a predetermined position.
While not specifically disclosed for such an application, U.S. Pat. Nos. 2,892,647; 2,952,485 and 2,415,663 show various mechanisms for retaining a structural upper section relative to a support portion which is typically sitting on the floor. U.S. Pat. No. 5,016,846 also shows a device for a hospital table.
What is desired in the marketplace, is a vertically adjustable support member, which can be telescopically movable to infinite incremental positions, yet is simple in construction, has the ability to maintain a great deal of vertical load, and is easily adjustable between the various vertical heights.
SUMMARY OF THE INVENTION
The objects of the invention have been accomplished by providing a mechanical stand assembly for supporting objects, where the stand comprises an upper base section and a support member. The support member includes a telescopic tube projecting therefrom and within the upper base section and further comprises a locking mechanism for maintaining the support member at various incremental heights. The locking mechanism includes a locking jaw which is pivotably mounted within the stand, and has a frictional surface for engagement with a locking surface within the upper base section. The locking jaw and the locking surface are vertically offset so as to form an over center locking arrangement when downward vertical force is applied to the support member, yet with free upward vertical movement to adjust the vertical height.
In another aspect of the invention, the objects were accomplished by providing a mechanical stand assembly for supporting objects, where the stand comprises an upper base section, a support member, and an actuator assembly. The support member is cooperably attached to the upper base section allowing vertical movement there between. The actuator assembly comprises a locking member which is mounted to the stand assembly and which fixes the support member in various vertical positions, and an actuator member which moves the jaw into and out of locked engagement, thereby allowing for an infinite number of incremental vertical height positions for the support member.
REFERENCES:
patent: 389005 (1888-09-01), Peck
patent: 430392 (1890-06-01), Maschmeyer
patent: 1048143 (1912-12-01), Franke
patent: 2415663 (1947-02-01), Vitek
patent: 2787485 (1957-04-01), Frisell
patent: 2892647 (1959-06-01), O'Neill
patent: 2952485 (1960-09-01), Hammond et al.
patent: 3807574 (1974-04-01), Lanza
patent: 3835486 (1974-09-01), Benoit et al.
patent: 4239169 (1980-12-01), DeSantis
patent: 4892279 (1990-01-01), Lafferty et al.
patent: 5016846 (1991-05-01), Solomon
Baker & Daniels
Baxter Gwendolyn
Braun Leslie A.
Garden City Products, Inc.
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