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US 4,383,792 AGranted
Crane for detachable mounting on a truck bed
AssigneeClark G. Seabloom
InventorsClark G. Seabloom, Lawrence C. Post
Life of this patent
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AssigneeClark G. Seabloom
InventorsClark G. Seabloom, Lawrence C. Post
Estimating the term…
A detachable crane or hoist for mounting on the bed of a pickup truck or other vehicle is constructed from tubular members of square cross section. The structure is readily secured to the truck bed and the boom may be extended to selected lengths with guy lines arranged for the length selected. The boom is pivotally mounted on a roller mounted base and is easily erected and dismantled. A post or column is provided to guide the boom during vertical movement and is extendable to provide raised positions for guy lines and for the hoisting cable. A removable stop on the post provides a secure rest for the boom in its collapsed and lowered position. Short anchoring bars horizontally adjustable in sleeves secured to the rearward end of the structure are used for securing the structure to the truck bed. These bars may be replaced by long bars fitting the same sleeves and also sleeves in the forward end of the structure. The long bars are effective for facilitating removal of the crane from the truck.
In a hoist of the type which is adapted for detachable mounting on the bed of a pickup truck or similar vehicle and which includes an elongated flat base for engagement with and attachment to the truck bed, a boom having its base end pivotally attached to a member mounted for limited movement fore and aft along the longitudinal axis of the flat base, said boom being adapted for swinging movement in a vertical plane with its axis normal to the longitudinal axis of the base, means for securing said member to the base in its aft position, the combination with:
A hoist as set forth in claim wherein said stop comprises a gate hinged on one of said posts and swingable into position for engaging the other post, and means for locking said gate in its position of engagement with said other post.
A hoist as set forth in claim 10 including the further combination with a pair of sockets provided in said base at one side of said upright structure and adapted to receive the posts of said extension structure for storage, and means for securing the upper portion of said extension structure to said upright structure for stabilizing said extension structure in its storage position.
In a hoist of the type which is adapted for detachable mounting on the bed of a pickup truck or similar vehicle and which includes a flat base for engagement with and attachment to the truck bed, a boom having its base end pivotally attached to a member mounted for limited movement fore and aft of the flat base, means for securing said member to the base in its aft position, means for erecting the boom and means for restraining the boom against lateral movement, the combination with:
In a hoist of the type which is adapted for detachable mounting on the bed of a pickup truck or similar vehicle and which includes an elongated flat base for engagement with and attachment to the truck bed, a boom having its base end pivotally attached to a member mounted for limited movement fore and aft along the longitudinal axis of the flat base, said boom being adapted for swinging movement in a vertical plane with its axis normal to the longitudinal axis of the base, means for securing said member to the base in its aft position, means for erecting the boom and means for restraining the boom against lateral movement, the combination with;
Dependencies are inferred from the claim text.