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US 2021/0053801 A1Published application
Confined-space davit
Assignee3M Innovative Properties Company
InventorsGreg E. Schrank, Andrew C. Strauss
Life of this patent
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Abstract
A confined-space davit, including a vertical, elongate mast provided by at least one annular tube; and, a boom that is pivotally connected to an upper end portion of the mast and that extends forwardly from the mast. The tube comprises a forward wall and an opposing rearward wall and comprises left and right opposing lateral sidewalls that each connect the forward wall to the rearward wall.
Claims20
A confined-space davit, comprising:
- a vertical, elongate mast and a boom that is pivotally connected to an upper end portion of the mast and that extends forwardly from the mast to define a common forward-rearward axis of the davit and of the mast,
- wherein the davit further comprises a gusset strut with a rearward end that is pivotally connected to the upper end portion of the mast at a location below the pivotal connection of the boom to the upper end portion of the mast, and with a forward end that is pivotally connected to the boom,
- wherein the gusset strut comprises a forward section and a rearward section, the forward and rearward sections of the gusset strut being telescopically movable relative to each other to lengthen or shorten the gusset strut to change a vertical component of an angle at which the boom extends forwardly from the boom,
- and, wherein the forward and rearward sections of the gusset strut are disconnectable from each other.
1 more element
Dependencies are inferred from the claim text.