Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1992-06-23
1993-03-16
Olszewski, Robert P.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
187 18, 254122, 182141, B66B 920
Patent
active
051936496
ABSTRACT:
A platform car includes a base frame, a platform, and two X-shaped members respectively disposed along both sides of the base frame. Each X-shaped member is comprised of a first bar having a first end pivotally attached to the base frame and a second end slidably received in an associated groove in the platform and a second bar pivotally connected to the first bar at a middle portion thereof with a first end thereof pivotally attached to the platform and a second end thereof slidably received in an associated groove in the base frame. A handle is mounted on the base frame for manually operating a piston rod of a cylinder. An actuating member is securely attached to and actuatable by the piston rod. A pair of connecting members each with a first end thereof pivotally attached to the actuating member and a second end thereof securely attached to a lower part of associated first bar of the X-shaped member. A movement of the actuating member responsive to manual operation of the handle urges the second ends of the first bars of the X-shaped members to pivot about their pivotal axes and to slide in the grooves in the platform, thereby controlling the height of the platform.
REFERENCES:
patent: 4655466 (1987-04-01), Hanaoka
patent: 4690250 (1987-09-01), Bergstrom
patent: 5131501 (1992-07-01), Yoshikawa
Noland Kenneth
Olszewski Robert P.
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