Horizontally supported planar surfaces – With structural installation
Patent
1993-12-28
1995-04-25
Brittain, James R.
Horizontally supported planar surfaces
With structural installation
108134, 108 40, 108 33, 211 90, A47B 2304
Patent
active
054089360
ABSTRACT:
The rack assembly includes a pair of mounting struts which are disposed spacedly in a parallel relationship and which are respectively formed with an elongated groove that has a lower end provided with an engaging member and an upper end. A plate member has two opposed end edges and two opposed side edges. One of the end edges of the plate member is disposed between the struts. Each of the side edges of the plate member has a positioning projection extending into an adjacent one of the guiding grooves. A connecting rod has a first end pivoted to one of the struts at a position above the upper end of the guiding groove and a second end pivoted to an adjacent side edge of the plate member to permit engagement between the engaging members and the positioning projections of plate member when the positioning projections of the plate member are moved to the lower ends of the guiding grooves of the struts.
REFERENCES:
patent: 1692880 (1928-11-01), Wirth
patent: 2010990 (1935-08-01), Hoover
patent: 2031287 (1936-02-01), Swanson
patent: 2650145 (1953-08-01), Sieminski
patent: 4862611 (1989-09-01), Wright
Brittain James R.
Sandy Robert J.
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