US3907364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dump vehicle
Assignee: Individual
•
Filing: 1973-03-23
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Granted: 1975-09-23
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Expires: 1993-03-23
Abstract
Abstract A dump vehicle comprising a wheeled main frame, an elongate subframe overlying and being connected to the main frame by means enabling the sub-frame to swing in an ascending arc responsive to the application of a lift force thereto, a dump body or box assembly connected at its rearward end portion to the preferably rearward end of the sub-frame by means enabling said assembly to swing in an ascending arc responsive to the application of lift force thereto, and powered lift mechanism operatively related and connected to the main frame, the sub-frame and the dump body assembly for applying lift force requisite to the lifting and dumping or the particular burden of cargo then contained in the dump body and including means for applying the lift force first to the forward end of the dump body and thereafter to its rearward end.
Inventors
- 👤 Bernard J Hnath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:37
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/04; B60P1/30; B60P1/34
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
135 words
A dump vehicle comprising, in combination, a mobile main frame, an elongate sub-frame connected at its forward end portion for swinging motion in upward direction to one of a plurality of angular positions of inclination with respect to the main frame, a dump body assembly connected at its rearward end portion to the rearward end of the sub-frame both for swinging motion independently of the sub-frame to one of a plurality of lift heights and also for swinging motion therewith, and power means carried by the sub-frame for applying lift force to the forward end of the dump body to first pivot the dump body on the subframe and thereafter lift it and the attached rearward end portion of the sub-frame whereupon both dump body and sub-frame swing in unison to a desired lift height.
Claim 2
Dependent Claim
135 words
A dump vehicle comprising, in combination, a mobile main frame, an elongate sub-frame connected at its forward end portion for swinging motion in upward direction to one of a plurality of angular positions of inclination with respect to the main frame, a dump body assembly connected at its rearward end portion to the rearward end of the sub-frame both for swinging motion independently of the sub-frame to one of a plurality of lift heights and also for swinging motion therewith, and power means carried by the sub-frame for applying lift force to the forward end of the dump body to first pivot the dump body on the subframe and thereafter lift it and the attached rearward end portion of the sub-frame whereupon both dump body and sub-frame swing in unison to a desired lift height.
Claim 3
Dependent Claim
59 words
A dump vehicle according to claim 1, wherein the portion of said power means for causing the lift force to be applied to the rearward end portion of the sub-frame comprises an adjustable-length strut means which is a part of a series of links extending between the dump body assembly and a fixed part of the wheeled main frame.
Claim 4
Dependent Claim
27 words
A dump vehicle according to claim 2, wherein said adjustable-length strut means incorporates means for adjusting the length thereof from an effective zero length to varying lengths.
Claim 5
Dependent Claim
42 words
A dump body according to claim 3, wherein said adjustable-length strut means comprises telescopically related rod and tube components and a cross pin insertible in aligned cross holes provided in said tube components for setting the effective length of said strut means.
Claim 6
Dependent Claim
96 words
A dump vehicle according to claim 1, wherein said power means comprises hydraulic cylinder means carried by the sub-frame, a bell-crank assembly mounted for rocking motion about a transverse floating axis when actuated by said cylinder means, fixed-length actuating links providing a direCt connection between the rocking cranks of the bell-crank assembly and forward points on the under-side of the dump body, adjustable-length sub-frame lifting struts interposed between said cranks and the main frame, and means for adjusting the effective length of said struts from zero to a predetermined one of a plurality of effective lengths.
Claim 7
Dependent Claim
96 words
A dump vehicle according to claim 1, wherein said power means comprise hydraulic cylinder means carried by the sub-frame, a bell-crank assembly mounted for rocking motion about a transverse floating axis when actuated by said cylinder means, fixed-length lifting links providing a direct connection between the rocking cranks of the bell-crank assembly and forward points on the under-side of the dump body, adjustable-length sub-frame lifting struts interposed between said cranks and the main frame and means for adjusting the effective length of said struts from zero to a preselected one of a plurality of effective lengths.
Claim 8
Dependent Claim
41 words
A dump vehicle according to claim 5, wherein said adjustable-length sub-frame lifting struts comprise telescopically-related rod and tube components and a cross pin insertible in aligned cross holes provided in said tube components for setting the effective length of said struts.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |