US3935953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implement mounting means for earthworking vehicles
Assignee: Caterpillar Inc
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Filing: 1974-06-24
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Granted: 1976-02-03
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Expires: 1994-06-24
Abstract
Abstract An earthworking vehicle, such as a wheel loader, comprises a pair of lift arms mounted on a forward end thereof. A tilt linkage is interconnected between each lift arm and a loader bucket for selectively moving the loader bucket relative to the lift arms. The tilt linkage comprises mounting means, including an over-center toggle mechanism, releasably attached to the loader bucket whereby various work implements may be substituted in lieu thereof.
Inventors
- 👤 Robert N. Stedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:02
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/3604; E02F3/3609; E02F3/3618
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
120 words
A vehicle adapted to have a work implement releasably attached thereon comprising a frame, implement support means, including lift arm means and tilt linkage means, mounted on said frame, and mounting means, including at least one over-center toggle mechanism, mounted on said support means and interconnected between the lift arm means and tilt linkage means thereof for releasably attaching a work implement on said support means, said toggle mechanism comprising a pair of first and second links pivotally connected together at inner ends thereof at a common pivot means, an outer end of said first link being pivotally connected to said tilt linkage means and an outer end of said second link being pivotally mounted on said lift arm means.
Claim 2
Dependent Claim
120 words
A vehicle adapted to have a work implement releasably attached thereon comprising a frame, implement support means, including lift arm means and tilt linkage means, mounted on said frame, and mounting means, including at least one over-center toggle mechanism, mounted on said support means and interconnected between the lift arm means and tilt linkage means thereof for releasably attaching a work implement on said support means, said toggle mechanism comprising a pair of first and second links pivotally connected together at inner ends thereof at a common pivot means, an outer end of said first link being pivotally connected to said tilt linkage means and an outer end of said second link being pivotally mounted on said lift arm means.
Claim 3
Dependent Claim
44 words
The vehicle of claim 1 wherein said left arm means comprises a pair of laterally spaced lift arms pivotally mounted on said frame and means operatively interconnected between said frame and each of said lift arms for selectively raising and lowering said lift arms.
Claim 4
Dependent Claim
24 words
The vehicle of claim 2 further comprising a work implement releasably attached to each of said lift arms by one of said mounting means.
Claim 5
Dependent Claim
13 words
The vehicle of claim 3 wherein said work implement constitutes a loader bucket.
Claim 6
Dependent Claim
64 words
The vehicle of claim 3 wherein said tilt linkage means comprises a tilt linkage mounted on each of said lift arms and means operatively connected between said frame and each of said tilt linkages for selectively tilting said work implement relative to said lift arms, one of said over-center toggle mechanisms pivotally interconnected between forward ends of a respective tilt linkage and lift arm.
Claim 7
Dependent Claim
39 words
The vehicle of claim 5 wherein said work implement has a pair of generally U-shaped brackets secured on a backside thereof and wherein one of said toggle mechanisms is expanded into locked engagement with each one of said brackets.
Claim 8
Dependent Claim
53 words
The vehicle of claim 1 further comprising cooperative locking means on said second link and on said implement support means for selectively locking said second link to said implement support means to prevent relative motion therebetween, whereby the toggle mechanism may be released by operating said tilt arm means in a dump direction.
Claim 9
Dependent Claim
27 words
The vehicle of claim 7 wherein said locking means comprises an aperture formed in said second link and a detent reciprocally mounted on said implement support means.
Claim 10
Dependent Claim
20 words
The vehicle of claim 8 further comprising means for selectively retracting or extending said detent into engagement with said aperture.
Claim 11
Dependent Claim
30 words
The vehicle of claim 9 wherein said lastmentioned means comprises spring means engaging said detent for normally retracting the same and fluid pressure control means for selectively extending said detent.
Claim 12
Dependent Claim
63 words
The vehicle of claim 1 further comprising a work implement and at least one generally U-shaped bracket secured on a back side of said work implement, said bracket having a hook portion formed on each end thereof, and wherein an outer end of each of said first and second links is disposed in locked engagement within a respective one of said hook portions.
Claim 13
Dependent Claim
32 words
The vehicle of claim 1 wherein said tilt linkage means comprises a parallelogram-type tilt linkage and wherein said over-center toggle mechanism is operatively interconnected between said tilt linkage and said support means.
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) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |