Patent US4398768A successfully refreshed from Google Patents.
US4398768A
Expired / Lapsed
US
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Side dump cart
Assignee: Individual
•
Filing: 1981-08-13
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Granted: 1983-08-16
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Expires: 2001-08-13
Abstract
Abstract A side dump cart useful for carting lengths of pipe and steel in various forms and other items and comprising a frame with wheels, a load-carrying platform tiltably mounted thereon and held from tilting during travel by a latch which is releasable for allowing the platform to tilt for dumping the load. A safety spring maintains the latch in latching position; a guard protects the latch operating surface from accidental engagement forces; a removable catch further prevents the platfrom from tilting; and the guard and catch being released by a separate motion of the operator from the releasing of the latch.
Inventors
- 👤 Ronald K. Parks
- 👤 Arden K. Zink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:43
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/04; B60P1/16; B60P1/165; B62; B62B; B62B3/00; B62B3/04; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/2093
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
228 words
A side dump cart comprising a frame, wheels attached to and supporting said frame, a platform assembly having a load-carrying platform pivotably mounted to said frame for tilting about a substantially horizontal platform axis from a load travel position to a load dumping position, said platform having an off-load side, said cart being free of obstruction to the falling of load from said platform off-load side, a latch, means movably attaching said latch to said frame and permitting said latch to move from latching to unlatching positions, said platform assembly having means thereon releasably engageable by said latch for preventing said load-carrying platform from tilting from travel postion to dumping position, said latch having a pressing means operably associated therewith and having a pressing surface which when pressed by the cart operator will cause said latch to move from latching position to unlatching position, a movable guard extending across said pressing surface for preventing accidental pressing by the operator, guard control means attached to said movable guard and movably connected to said frame for permitting the operator to intentionally move the guard away from the pressing surface, whereby upon intentional movement of the guard control means to withdraw the guard away from said pressing surface, the operator can gain access to the pressing surface and unlatch said load-carrying platform causing same to automatically tilt toward its off-load side.
Claim 2
Dependent Claim
228 words
A side dump cart comprising a frame, wheels attached to and supporting said frame, a platform assembly having a load-carrying platform pivotably mounted to said frame for tilting about a substantially horizontal platform axis from a load travel position to a load dumping position, said platform having an off-load side, said cart being free of obstruction to the falling of load from said platform off-load side, a latch, means movably attaching said latch to said frame and permitting said latch to move from latching to unlatching positions, said platform assembly having means thereon releasably engageable by said latch for preventing said load-carrying platform from tilting from travel postion to dumping position, said latch having a pressing means operably associated therewith and having a pressing surface which when pressed by the cart operator will cause said latch to move from latching position to unlatching position, a movable guard extending across said pressing surface for preventing accidental pressing by the operator, guard control means attached to said movable guard and movably connected to said frame for permitting the operator to intentionally move the guard away from the pressing surface, whereby upon intentional movement of the guard control means to withdraw the guard away from said pressing surface, the operator can gain access to the pressing surface and unlatch said load-carrying platform causing same to automatically tilt toward its off-load side.
Claim 3
Dependent Claim
26 words
The side dump cart of claim 1 having a safety spring operably associated with said latch and said frame and urging said latch into latching position.
Claim 4
Dependent Claim
57 words
The side dump cart of claim 1 having said load platform having a back side which is on the opposite side thereof from said off-load side thereof, said frame having a rail on said back side of said platform and extending above said platform for restraining load from falling off of said back side of said platform.
Claim 5
Dependent Claim
37 words
The side dump cart of claim 3 having said rail extending at least two feet above the bottom of said wheels so as to serve also as a handle by which to push and guide said cart.
Claim 6
Dependent Claim
53 words
The side dump cart of claim 1 having a safety catch movably mounted on said frame between platform-holding and platform-releasing positions, means on said platform assembly engageable by said catch when said catch is in holding position for holding said platform from tilting from said load travel position to said load dumping position.
Claim 7
Dependent Claim
75 words
The side dump cart of claim 5 having catch control means mounted on said frame and operably associated with said catch and having a movable trigger surface which is movable by said operator for moving said control means from a first position in which said safety catch remains in said holding position to a second position in which safety catch is operated by said control means so as to move into said platform releasing position.
Claim 8
Dependent Claim
50 words
The side dump cart of claim 6 having said trigger surface facing downwardly and said catch control means being operated for catch release only when said trigger surface is moved upwardly so that persons or objects striking downwardly on said catch control means will not cause release of said catch.
Claim 9
Dependent Claim
119 words
The side dump cart of claim 6 having said pressing surface upwardly facing and pressable by a foot of said operator, a movable guard which when in guarding position is disposed over the top of said pressing surface to prevent accidental pressing thereof, guard control means attached to said guard and movably connected to said frame for movement to raise said guard from said pressing surface into an un-guard position sufficiently for an operator's foot to be pressed against said pressing surface, said guard control means and said catch control means being interconnected so that when said trigger surface is moved said guard is moved to said un-guard position and said catch is moved to said platform releasing position.
Claim 10
Dependent Claim
82 words
The side dump cart of claim 1 having said pressing surface upwardly facing and pressable by a foot of said operator, a movable guard which when in guarding position is disposed over the top of said pressing surface to prevent accidental pressing thereof, guard control means attached to said guard and movably connected to said frame for movement to raise said guard from said pressing surface into an un-guard position sufficiently for an operator's foot to be pressed against said pressing surface.
Claim 11
Dependent Claim
35 words
The side dump cart of claim 1 having a wheel system comprising a pair of central wheels and pairs of end wheels, said central wheels downwardly terminating along a plane located below said end wheels.
Claim 12
Dependent Claim
19 words
The side dump cart of claim 10 having said wheel axes being at right angles to said platform axis.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-15 | 1987-02-14 | 1987-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-15 | 1991-02-14 | 1991-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-15 | 1995-02-14 | 1995-08-16 | $7700.00 | Window Closed / Lapsed |