Patent US3722874A successfully refreshed from Google Patents.
US3722874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slag pot carrier
Assignee: Individual
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Filing: 1970-12-15
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Granted: 1973-03-27
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Expires: 1990-12-15
Abstract
Abstract An improved slag pot load carrier is provided. Fluid powered means are included to assist the primary dump mechanism in moving a vehicle load pivoted on the main vehicle frame from a carry to a dump position, and to return the load to its carry position. Suspension means are provided to lower and raise at least a portion of the vehicle frame and to resiliently support the frame against shocks. A hydro-pneumatic system is also provided to appropriately actuate the suspension means, and the primary dump and return assist mechanisms.
Inventors
- 👤 E Kress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:14
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/04; B60P1/16; B60P1/162; B22; B22D; B22D41/00; B22D41/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
120 words
A vehicle suspension device comprising, in combination, a pair of mutually telescoped cylinders having opposite ends adapted to receive and transmit vehicle loads therethrough, the inner one of said cylinders having a closed end in fluid sealing relation with the outer one of said cylinders, a floating piston disposed in said inner cylinder, means for charging said inner cylinder with compressible fluid so as to urge said piston toward said closed end, means for charging said outer cylinder with relatively incompressible fluid, and a damper valve in said closed end for allowing said incompressible fluid to move freely against said floating piston upon collapsing telescopic movement of the cylinders while restricting fluid flow through said end in the reverse direction.
Claim 2
Dependent Claim
120 words
A vehicle suspension device comprising, in combination, a pair of mutually telescoped cylinders having opposite ends adapted to receive and transmit vehicle loads therethrough, the inner one of said cylinders having a closed end in fluid sealing relation with the outer one of said cylinders, a floating piston disposed in said inner cylinder, means for charging said inner cylinder with compressible fluid so as to urge said piston toward said closed end, means for charging said outer cylinder with relatively incompressible fluid, and a damper valve in said closed end for allowing said incompressible fluid to move freely against said floating piston upon collapsing telescopic movement of the cylinders while restricting fluid flow through said end in the reverse direction.
Claim 3
Dependent Claim
32 words
The combination of claim 1 including means for selectively introducing fluid under pressure within said outer cylinder and beneath said closed end so as to cause collapsing telescopic movement of the cylinders.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |