Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1977-05-02
1978-08-08
Blunk, Evon C.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
285316, 403 85, 403104, B66F 728
Patent
active
041050975
ABSTRACT:
A locking device for a lift having an arm pivotably mounted for horizontal movement about a lifting carriage with two tubular members each pivotably connected at one end to the arm. One of the tubular members extends into a cylindrical housing and is locked thereto by balls mounted in ball cages urged by a spring to a locking position. The other tubular member is locked to the first tubular member by similar balls, cages and spring. A sleeve longitudinally slidably exterior to the two tubular members includes pins for engaging the ball cages to release the two tubular members.
REFERENCES:
patent: 1031637 (1912-07-01), Fischer
patent: 3351363 (1967-11-01), Downey et al.
Blunk Evon C.
Gebr. Hofmann GmbH & Co. KG Maschinenfabrik
Rowland James L.
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