Horizontally supported planar surfaces – Tiltable surfaces – Pivotally adjustable about horizontal axis
Patent
1988-08-09
1989-03-28
Zugel, Francis K.
Horizontally supported planar surfaces
Tiltable surfaces
Pivotally adjustable about horizontal axis
108 10, 108106, A47F 512
Patent
active
048153915
ABSTRACT:
A computer desk comprising a pair of U-shaped frames of which one is longer than and pivoted to the other, two pairs of wheels disposed on the ends of the limbs of each U-shaped frame, two boards engagably disposed on the top of the inverted U-shaped frames and height adjusting device. The height adjusting device comprises three length adjustable rods connecting between the frames and between the boards and the frames. Adjusting the length of the adjusting rods changes the height of the boards and the angles of the boards with respect to the plane of the horizon so that the height of the desk is adjusted.
REFERENCES:
patent: 3988021 (1976-10-01), Grover
patent: 4440096 (1984-04-01), Rice et al.
patent: 4567835 (1986-02-01), Reese et al.
patent: 4604955 (1986-08-01), Fleischer et al.
patent: 4714224 (1987-12-01), Calmcs
Ton Li Enterprises Co., Ltd.
Zugel Francis K.
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