B - Operations – Transporting – 66 – C
Patent
B - Operations, Transporting
66
C
254/14
B66C 23/72 (2006.01) B66F 7/20 (2006.01) B66F 9/06 (2006.01) B66F 9/075 (2006.01)
Patent
CA 1290317
MOBILE LIFTING APPARATUS Abstract of the Disclosure A mobile lifting apparatus has a chassis with front driving wheels and steerable rear wheels. A vertical mast comprised of a pair of extendible hydrau- lic cylinders is spacedly mounted on the front of the chassis. One or more jam stay cylinders are mounted on the chassis rearwardly of the vertical mast. A pair of extendable booms are mounted on the vertical mast and jam stay cylinders. The load may be attached to the end of the booms. A hydraulic or other power supply extends and retracts the boom and drives the driving wheels. A counterweight is mounted on the rear of the chassis and the chassis may be extended to increase the capacity and stability of the lifting apparatus.
533832
Engler Edgar D.
Hanson Leonard J.
Mlaker John J.
Stapel Melvin G.
Weber Gus J.
Engler Edgar D.
Riches Mckenzie & Herbert Llp
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