Unloading apparatus having retractable cam wheel followers
AssigneeRexnord Inc.
InventorGerald G. Lambert
Life of this patent
Estimating the term…
Abstract
An improved apparatus having a carriage and container which is pivotably connected to the carriage. The container has a cam wheel follower which contacts a cam rail positioned along the path over which the apparatus moves thereby causing the container to pivot. The cam wheel follower is selectively retractable into a housing beneath the container.
Claims3
An improved apparatus for carrying and unloading articles including a carriage adapted for movement between loading and unloading stations, a container pivotably connected to said carriage and adapted for carrying objects between stations, and cam follower means associated with said container for contacting a cam surface and pivoting said container to a predetermind angle when actuated,
- said improvement comprising a cam follower shaft member mounting said cam follower means and movably attached to said carriage for telescopic movement between a retracted position and an extended position, said cam following means being housed within said apparatus when in the retracted position,
- biasing means for yieldably biasing said cam follower shaft toward said retracted position, and
- locking means operative when said member is extended for restraining said shaft in the extended position,
- said cam shaft member having an arm means extending from a point adjacent said cam follower means when said member is in the extended position for contacting a stationary object to inactivate said locking means and permitting said biasing means to retract said member into its retracted position.
Dependencies are inferred from the claim text.