Roll off hoist with front retractable loading frame
OwnerDan C. Renziehauseninventor
Life of this patent
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Abstract
A roll off container hoist with a front retractable loading frame includes a hoist with a break or discontinuity of the loadable frame structure at a forward end of the hoist. The roll off container hoist is mounted on a vehicle having hydraulic circuits for operating the hoist. The hoist includes a main hoist frame pivoted to a vehicle frame at a rear pivot point. The hoist includes a main lift cylinder attached to the vehicle frame and the main hoist frame for pivoting the main hoist frame to the loading/unloading position. The hoist includes an extension frame slidably coupled to the main hoist frame and extendable there-from that is loadable at any dump angle.
Claims15
A roll off container hoist with a front retractable loading frame forming a hoist with a break of the loadable frame structure at a forward end of the hoist, said hoist comprising:
- a vehicle frame;
- a main hoist frame pivoted to said vehicle frame at a rear pivot point;
- a main lift cylinder attached to said vehicle frame and said main hoist frame for pivoting said main hoist frame relative to said vehicle frame;
- a loadable extension frame coupled to said main hoist frame forward of said pivot point and forming a break in the loadable frame structure of the hoist, wherein said loadable extension frame is extendable and retractable relative to said main hoist frame;
- a cable that is attachable to a container that is loaded onto and unloaded off of said roll off container hoist, wherein said cable is retractable relative to said main hoist frame to allow for loading of the container onto said roll off container hoist and extendable relative to said main hoist frame to allow for unloading of the container off of said roll off container hoist;
- and
- a cable and loadable extension frame cylinder assembly coupled between said main hoist frame and said loadable extension frame and configured for both (i) simultaneously extending said loadable extension frame and retracting said cable relative to said main hoist frame with said main hoist frame positioned at any angle relative to said vehicle frame, and (ii) simultaneously retracting said loadable extension frame and extending said cable relative to said main hoist frame with said main hoist frame positioned at any angle relative to said vehicle frame.
A roll off container hoist with a front retractable loading frame for height restricted areas, said hoist comprising:
- a vehicle frame;
- a main hoist frame pivoted to said vehicle frame at a rear pivot point;
- a main lift cylinder attached to said vehicle frame and said main hoist frame for pivoting said main hoist frame relative to said vehicle frame;
- a loadable extension frame slidably coupled to said main hoist frame forward of said pivot point and extendable from and retractable into the main hoist frame and loadable with the main hoist frame at any dump angle relative to said vehicle frame;
- a cable that is attachable to a container that is loaded onto and unloaded off of said roll off container hoist, wherein said cable is retractable relative to said main hoist frame to allow for loading of the container onto said roll off container hoist and extendable relative to said main hoist frame to allow for unloading of the container off of said roll off container hoist;
- and
- a cable and loadable extension frame cylinder assembly coupled between said main hoist frame and said loadable extension frame and configured for both (i) simultaneously extending said loadable extension frame and retracting said cable relative to said main hoist frame with said main hoist frame positioned at any angle relative to said vehicle frame, and (ii) simultaneously retracting said loadable extension frame and extending said cable relative to said main hoist frame with said main hoist frame positioned at any angle relative to said vehicle frame.
Dependencies are inferred from the claim text.