Horizontally supported planar surfaces – Horizontally adjustable – Concurrent horizontal and vertical movements
Patent
1997-11-17
1999-07-06
Chen, Jose V.
Horizontally supported planar surfaces
Horizontally adjustable
Concurrent horizontal and vertical movements
108141, A47B 1100
Patent
active
059185520
ABSTRACT:
A positioning apparatus featuring a rotary cam mechanism for providing movement of a platform along a vertical axis and an adjustment mechanism for providing movement of a mounting surface of the platform along a horizontal axis located in a horizontal plane oriented perpendicular to the vertical axis. A bifurcated platform, having upper and lower platforms, is mounted in vertically movable relation to a base, and a rotary cam mechanism is interfaced between the base and the platform for providing selective vertical movement of the platform in relation to the base responsive to selective rotation of a rotary cam. The rotary cam is rotatably connected to the base and includes a pair of opposing inclined cam slots formed therein. A pair of cam pins are connected to the lower platform in mutually opposing relation so as to be each respectively located in a respective cam slot. A threaded vertical adjustment bolt is rotatably connected to the base, in axially immovable relation with respect thereto. The vertical adjustment bolt threadably engages a threaded vertical adjustment nut which is pivotally connected to the rotary cam. A horizontal adjustment mechanism selectively adjusts the horizontal position of an upper platform relative to the lower platform.
REFERENCES:
patent: 2673773 (1954-03-01), Dusenbury
patent: 4725703 (1988-02-01), Park
patent: 5323712 (1994-06-01), Kikuiri
patent: 5524502 (1996-06-01), Osanai
Applicant's Application 60/040,268 Filed Mar. 11, 1997, Device Described Therein on Market Publically Since at Least Before Mar. 11, 1996.
Chen José V.
Keefe Peter D.
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