Hoist locking mechanism
AssigneeJoy MM Delaware, Inc.
InventorJeremia Petrus Venter
Life of this patent
Estimating the term…
Abstract
A cylinder assembly for supporting a device above a surface, the device including a base, the cylinder assembly including a cylinder, mounted on the base, and extendable perpendicular to the base. The cylinder assembly further includes a foot at the end of the cylinder away from the base, and a locking mechanism for locking the cylinder in its fully extended position, the locking mechanism comprising a track attached to the base, and a track rod connected to and movable along the track, between a cylinder retraced position and a cylinder extended position. The locking mechanism also includes a brace pivotally attached at one end to the track rod, and pivotally attached at another end to the foot, and a fixing mechanism for fixing the track rod in the cylinder extended position.
Claims12
A device including a cylinder assembly for supporting said device above a surface, the device including
- a base, and said cylinder assembly including
- a cylinder, mounted on said base, and extendable perpendicular to said base,
- a foot at the end of the cylinder away from said base, and
- locking means for locking said cylinder in its fully extended position, said locking means comprising
- a track attached to said base,
- a track rod connected to and movable along said track, between a cylinder retraced position and a cylinder extended position,
- a brace pivotally attached at one end to said track rod, and pivotally attached at another end to said foot, and
- fixing means for fixing said track rod in said cylinder extended position.
A device including a cylinder assembly for supporting said device above a surface, the device including
- a base, and said cylinder assembly including
- a cylinder, mounted on said base, and extendable perpendicular to said base,
- a foot at the end of the cylinder away from said base, and
- locking means for locking said cylinder in its fully extended position, said locking means comprising
- a track attached to said base,
- a track rod connected to and movable along said track, between a cylinder retraced position and a cylinder extended position,
- a brace pivotally attached at one end to said track rod, and pivotally attached at another end to said foot,
- a locking rod,
- a pair of spaced apart locking lugs attached to said base, with one on one said of said track and another on the other side of said track, each locking lug having a locking rod receiving opening,
- said locking rod being adapted to extend through each of said locking lugs, and adapted to be positioned to engage said track rod and prevent movement of said track rod from said cylinder extended position to said cylinder retracted position.
Dependencies are inferred from the claim text.