Abstract A carrying device is arranged to permit a workman to easily lift and transport large sheets of construction material such as plywood, wallboard and the like. The carrying device has a framework forming upper and lower lifting regions, preferably located to rest upon the shoulder and against the hip. The framework additionally defines a plane against which a sheet of material may be placed, and pivotally supports, adjacent said plane, cam means which are mounted eccentrically, arranged to be gravitationally rotated into gripping engagement with a sheet of material placed against said plane, and arranged to be rotated into tighter gripping engagement by gravitational forces exerted on the sheet of material as the framework is lifted upwardly. Preferably the cam means comprises a pair of cams mounted opposite a pair of tubular frame members defining the plane, the cams being joined for movement in tandem by a connecting rod to facilitate release of the sheet material from the carrier by simply raising the connecting rod. Preferably the framework comprises a substantially vertical U-shaped tubular member joined at its upper ends to a substantially horizontal U-shaped tubular member having downwardly extending mounting arms attached to the cam means. The carrying device is lightweight and inexpensive, and substantially simplifies the task of lifting and transporting a large sheet of construction material.
Inventors
👤 Herman J. Russo
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-05 23:26
CPC Classifications
B; B65; B65G; B65G7/00; B65G7/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
173 words
A carrying device arranged to permit a workman to easily lift and transport large sheets of construction material such as plywood, wallboard and the like, comprising: a substantially U-shaped lower frame member having arms defining a plane against which a sheet of material may be placed and a crossbar, offset from said plane, forming a lower lifting region; a substantially U-shaped upper frame member joined to the lower frame member and having a crossbar offset from said plane and forming an upper lifting region and having mounting arms adjacent to said plane; cam means mounted eccentrically upon said mounting arms adjacent said plane, said cam means gravitationally rotating into gripping engagement with a sheet of material placed against said plane, and being rotated into tighter gripping engagement by gravitational forces exerted on the sheet of material as the frame members are lifted upwardly; the cam means including a pair of cams mounted opposite the lower frame arms and rotatable into engagement therewith, the cams being joined for tandem motion by a connecting rod.
Claim 2
Dependent Claim
173 words
A carrying device arranged to permit a workman to easily lift and transport large sheets of construction material such as plywood, wallboard and the like, comprising: a substantially U-shaped lower frame member having arms defining a plane against which a sheet of material may be placed and a crossbar, offset from said plane, forming a lower lifting region; a substantially U-shaped upper frame member joined to the lower frame member and having a crossbar offset from said plane and forming an upper lifting region and having mounting arms adjacent to said plane; cam means mounted eccentrically upon said mounting arms adjacent said plane, said cam means gravitationally rotating into gripping engagement with a sheet of material placed against said plane, and being rotated into tighter gripping engagement by gravitational forces exerted on the sheet of material as the frame members are lifted upwardly; the cam means including a pair of cams mounted opposite the lower frame arms and rotatable into engagement therewith, the cams being joined for tandem motion by a connecting rod.
Claim 3
Dependent Claim
151 words
A carrying device arranged to permit a workman to easily lift and transport large sheets of construction material such as plywood, wallboard and the like, comprising: frame means providing lifting regions and defining a plane against which a sheet of material may be placed; cam means pivotally supported by the frame means adjacent said plane, said cam means being mounted eccentrically for rotation into tighter gripping engagement with a sheet of material by gravitational forces exerted on the sheet of material as the frame is lifted upwardly; and said frame means including a lower frame member having frame arms defining said plane and a crossbar forming a lower lifting region, and an upper frame member joined to the lower frame member and having mounting arms for said cam means and a crossbar forming an upper lifting region, said upper and lower crossbars being offset from said plane on one side thereof.
Claim 4
Dependent Claim
151 words
A carrying device arranged to permit a workman to easily lift and transport large sheets of construction material such as plywood, wallboard and the like, comprising: frame means providing lifting regions and defining a plane against which a sheet of material may be placed; cam means pivotally supported by the frame means adjacent said plane, said cam means being mounted eccentrically for rotation into tighter gripping engagement with a sheet of material by gravitational forces exerted on the sheet of material as the frame is lifted upwardly; and said frame means including a lower frame member having frame arms defining said plane and a crossbar forming a lower lifting region, and an upper frame member joined to the lower frame member and having mounting arms for said cam means and a crossbar forming an upper lifting region, said upper and lower crossbars being offset from said plane on one side thereof.