US3841651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel mounted, support platform hand truck
Assignee: Individual
•
Filing: 1973-07-19
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Granted: 1974-10-15
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Expires: 1993-07-19
Abstract
Abstract The aspects of the invention disclosed herein are directed to a wheel mounted, support platform hand truck for carrying articles such as building sheet material from place to place. The wheel mounted, support platform hand truck is constructed of an elongated support plate formed of a rectangular channel member which is positioned with the U-shaped channel portion thereof facing downwardly to provide a smooth top surface upon which the building sheet material can be placed. A tubular frame member is secured to one side of the elongated support plate and extends upwardly therefrom a distance sufficient to allow building sheet material to be placed against the frame member and locked in position. The building sheet material is locked in position by a locking bar adjustably secured to a central vertical member of the frame, this locking bar being adjustably movable upwardly and downwardly and locked in position by a bolt or wing nut associated therewith. The locking bar includes a turned downwardly end portion to extend over the building sheet material and hold it firmly against the upstanding frame of the hand truck. A main wheel or roller member positioned beneath the central portion of the elongated support plate provides the primary support for holding up the weight of the building sheet material. However to facilitate turning of the hand truck about a pivot point provided by the central or primary wheel members, a pair of secondary wheel members are positioned at the ends of the elongated support plate. The longitudinal axis through these secondary wheels are positioned slightly above the floor surface when the elongated support plate is horizontal to allow the entire wheel mounted, support platform hand truck to be tilted about the primary wheels and turned easily.
Inventors
- 👤 S Bigney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:57
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/26; B62B1/268
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
362 words
A wheel mounted, support platform hand truck for carrying articles, such as building sheet material, comprising in combination: an elongated support plate forming a carrying surface of said wheel mounted, support platform hand truck, said elongated support plate being a channel having first and second elongated side portions depending therefrom, a frame member secured to said first elongated side portion of said elongated support plate, said frame member extending upwardly from said elongated support plate a distance sufficient to allow building sheet material to be transported thereby to have the upper edge thereof rest against said frame member, a primary journalled roller member secured beneath said elongated support plate with the journal axis perpendicular to the sides of and substantially centered along the length of said elongated support plate, said primary roller member comprising a pair of wheels disposed on opposite sides of said support plate, thereby providing means to enable the transport of said wheel mounted, support platform hand truck from place to place, and a terminally-hooked locking bar adjustably secured to a vertically-slotted elongated guide member which is secured to said frame member and to said first elongated side portion of said support plate with the slot being in a vertical position substantially directly above said primary roller member when said elongated support plate is horizontal, said locking bar being vertically movable in the slot of said slotted guide member and adapted to be locked in place at the desired elevation to hook the building sheet material and thereby hold it firmly in place on the elongated support plate and against said frame member, a pair of spaced secondary roller members secured beneath said elongated support plate and located substantially at the terminating ends of said elongated support plate, the lowermost points of said secondary roller members being higher than the lowermost point of said primary roller member when the carrying surface of said elongated support plate is horizontal above a floor surface on which said primary roller member rests, said secondary roller members providing means for maintaining said wheel mounted, support platform hand truck in an easily balanced condition while moving a quantity of building sheet material secured thereto.
Claim 2
Dependent Claim
362 words
A wheel mounted, support platform hand truck for carrying articles, such as building sheet material, comprising in combination: an elongated support plate forming a carrying surface of said wheel mounted, support platform hand truck, said elongated support plate being a channel having first and second elongated side portions depending therefrom, a frame member secured to said first elongated side portion of said elongated support plate, said frame member extending upwardly from said elongated support plate a distance sufficient to allow building sheet material to be transported thereby to have the upper edge thereof rest against said frame member, a primary journalled roller member secured beneath said elongated support plate with the journal axis perpendicular to the sides of and substantially centered along the length of said elongated support plate, said primary roller member comprising a pair of wheels disposed on opposite sides of said support plate, thereby providing means to enable the transport of said wheel mounted, support platform hand truck from place to place, and a terminally-hooked locking bar adjustably secured to a vertically-slotted elongated guide member which is secured to said frame member and to said first elongated side portion of said support plate with the slot being in a vertical position substantially directly above said primary roller member when said elongated support plate is horizontal, said locking bar being vertically movable in the slot of said slotted guide member and adapted to be locked in place at the desired elevation to hook the building sheet material and thereby hold it firmly in place on the elongated support plate and against said frame member, a pair of spaced secondary roller members secured beneath said elongated support plate and located substantially at the terminating ends of said elongated support plate, the lowermost points of said secondary roller members being higher than the lowermost point of said primary roller member when the carrying surface of said elongated support plate is horizontal above a floor surface on which said primary roller member rests, said secondary roller members providing means for maintaining said wheel mounted, support platform hand truck in an easily balanced condition while moving a quantity of building sheet material secured thereto.
Claim 3
Dependent Claim
162 words
The wheel mounted, support platform hand truck for carrying articles of building sheet material, as set forth in clain 1 wherein said frame member is constructed of a tubular fabricated unit of U-shape having the bight portion thereof forming the top of the frame member, and the open end portions extending downwardly to said elongated support plate where thEy are welded to the outside edge of said first elongated side portion of said elongated support platform, said frame member further including a pair of support braces extending upwardly and diagonally, said support braces being two in number and positioned on opposite sides of the slotted guide member to which said locking bar is adjustably fastened, said support braces having their lower ends brought together and welded to said first side portion of said elongated support plate substantially in registry over said primary roller member and diverging upwardly therefrom to be secured to the U-shaped tubular frame member near the top portion thereof.
Claim 4
Dependent Claim
162 words
The wheel mounted, support platform hand truck for carrying articles of building sheet material, as set forth in clain 1 wherein said frame member is constructed of a tubular fabricated unit of U-shape having the bight portion thereof forming the top of the frame member, and the open end portions extending downwardly to said elongated support plate where thEy are welded to the outside edge of said first elongated side portion of said elongated support platform, said frame member further including a pair of support braces extending upwardly and diagonally, said support braces being two in number and positioned on opposite sides of the slotted guide member to which said locking bar is adjustably fastened, said support braces having their lower ends brought together and welded to said first side portion of said elongated support plate substantially in registry over said primary roller member and diverging upwardly therefrom to be secured to the U-shaped tubular frame member near the top portion thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |