Patent US3762590A successfully refreshed from Google Patents.
US3762590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material lifting and transporting vehicle
Assignee: Caterpillar Inc
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Filing: 1971-09-27
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Granted: 1973-10-02
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Expires: 1991-09-27
Abstract
Abstract An articulated vehicle is provided with a bifurcated front frame having forwardly extending side members supported by wheels at the outer ends thereof. An elongated tine, located between the side members, is attached on the front frame by a parallelogramtype linkage means for lifting and carrying a load thereon. One pair of links forming the linkage means comprise hydraulic cylinders adapted to selectively tilt the tine to enable the load to be more easily picked up and retained while being carried.
Inventors
- 👤 F Grooss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:51
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/065; B62; B62D; B62D49/00; B62D49/02; B62D53/00; B62D53/02; B66F9/075; B66F9/08; B66F9/10; B66F9/105
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
248 words
A material lifTing and transporting vehicle having a front frame comprising a base portion and a pair of laterally spaced side members extending forwardly from the base portion and normally disposed for movement along a longitudinal axis thereof, a. a generally horizontally disposed tine means positioned to extend in the direction of said axis and disposed between said side members, b. a generally vertically disposed support means having a tine means secured thereto, c. parallelogram type linkage means operatively connecting the support means to the front frame for permitting the tine means to remain substantially horizontal upon vertical upward movement thereof, the linkage means including at least one upper and one lower link pivotally interconnected between said support means and said front frame and wherein one of said links comprises extensible and retractable link means for selectively tilting the tine means relative to horizontal, and c. a pair of hydraulic cylinders pivotally interconnected between the front frame and the support means for selectively moving the tine means vertically between upper and lower operating positions, said hydraulic cylinders each pivotally connected to said support means at a position which is at least as high vertically as the position whereat said upper link is pivotally connected to said support means and to said front frame at a position which is at least as low vertically as the position whereat said lower link is pivotally connected to said front frame when said tine means is disposed at its lower operating position.
Claim 2
Dependent Claim
248 words
A material lifTing and transporting vehicle having a front frame comprising a base portion and a pair of laterally spaced side members extending forwardly from the base portion and normally disposed for movement along a longitudinal axis thereof, a. a generally horizontally disposed tine means positioned to extend in the direction of said axis and disposed between said side members, b. a generally vertically disposed support means having a tine means secured thereto, c. parallelogram type linkage means operatively connecting the support means to the front frame for permitting the tine means to remain substantially horizontal upon vertical upward movement thereof, the linkage means including at least one upper and one lower link pivotally interconnected between said support means and said front frame and wherein one of said links comprises extensible and retractable link means for selectively tilting the tine means relative to horizontal, and c. a pair of hydraulic cylinders pivotally interconnected between the front frame and the support means for selectively moving the tine means vertically between upper and lower operating positions, said hydraulic cylinders each pivotally connected to said support means at a position which is at least as high vertically as the position whereat said upper link is pivotally connected to said support means and to said front frame at a position which is at least as low vertically as the position whereat said lower link is pivotally connected to said front frame when said tine means is disposed at its lower operating position.
Claim 3
Dependent Claim
20 words
The vehicle of claim 1 further comprising a rear frame articulated to the front frame about a vertically disposed axis.
Claim 4
Dependent Claim
29 words
The vehicle of claim 1 wherein the linkage means includes a pair of laterally spaced fixed length links and a pair of laterally spaced extensible and retractable link means.
Claim 5
Dependent Claim
59 words
The vehicle of claim 1 wherein the load supporting means comprises a single tine member, disposed substantially on the longitudinal axis of the vehicle, having a generally circular cross section terminating in a tip at one end thereof whereby the tine member may support a tubular-shaped load by inserting the tine member through a hole defined in the load.
Claim 6
Dependent Claim
43 words
The vehicle of claim 1 further comprising a pair of axle mounting flanges attached to a forward end of each side member, a pair of stub axles attached to the mounting flanges and a pair of wheels rotatably mounted on the stub axles.
Claim 7
Dependent Claim
31 words
The vehicle of claim 1 wherein the load supporting means comprises a pair of laterally-spaced fork tines extending forwardly from a bottom of the support means for supporting a palletized load.
Claim 8
Dependent Claim
42 words
The vehicle of claim 3 wherein the fixed length links are pivotally interconnected between lower portions of the front frame and the support means and the link means are pivotally interconnected between upper portions of the front frame and the support means.
Claim 9
Dependent Claim
42 words
The vehicle of claim 3 wherein the fixed length links are pivotally interconnected between upper portions of the front frame and the support means and the link means are pivotally interconnected between lower portions of the front frame and the support means.
Claim 10
Dependent Claim
12 words
The vehicle of claim 1 wherein the link means are hydraulic cylinders.
Claim 11
Dependent Claim
42 words
The invention of claim 1 wherein said hydraulic cylinders are normally disposed at an angle relative to horizontal selected from the range of from 50* to 80* so that the angle does not exceed 90* upon full extension of said hydraulic cylinder.
Claim 12
Dependent Claim
10 words
The invention of claim 10 wherein the angle approximates 70*.
Claim 13
Dependent Claim
20 words
The invention of claim 1 wherein said hydraulic cylinders are disposed at least approximately perpendicular with respect to said links.
Claim 14
Dependent Claim
33 words
The vehicle of claim 3 wherein each of said fixed length links and a respective one of said hydraulic cylinders are pivotally connected directly on said front frame by a common pivot means.
Claim 15
Dependent Claim
38 words
The vehicle of claim 3 wherein eacH of said hydraulic cylinders is pivotally connected directly on a respective one of said fixed length links, between pivotal connections of such link on said front frame and said support means.
Claim 16
Dependent Claim
141 words
A material lifting and transporting vehicle having a front frame and normally disposed for movement along a longitudinal axis thereof, a. a generally horizontally disposed tine means comprising a generally cylindrical tine member positioned to extend in the direction of said axis, b. a generally vertically disposed support means, c. mounting means mounting the tine member on said support means comprising mating, conically shaped surface portions formed on the tine member and on the mounting means and securing means releasably securing the tine member to the support means, d. means operatively connecting the support means to the front frame, e. actuating means pivotally interconnected between the front frame and the support means for selectively moving the tine means vertically, and f. releasing means for selectively moving the tine member axially away from the support means upon release of the securing means.
Claim 17
Dependent Claim
141 words
A material lifting and transporting vehicle having a front frame and normally disposed for movement along a longitudinal axis thereof, a. a generally horizontally disposed tine means comprising a generally cylindrical tine member positioned to extend in the direction of said axis, b. a generally vertically disposed support means, c. mounting means mounting the tine member on said support means comprising mating, conically shaped surface portions formed on the tine member and on the mounting means and securing means releasably securing the tine member to the support means, d. means operatively connecting the support means to the front frame, e. actuating means pivotally interconnected between the front frame and the support means for selectively moving the tine means vertically, and f. releasing means for selectively moving the tine member axially away from the support means upon release of the securing means.
Claim 18
Dependent Claim
27 words
The invention of claim 15 further comprising releasing means for selectively moving the tine member axially away from the support means upon release of the securing means.
Claim 19
Dependent Claim
27 words
The invention of claim 15 wherein each of the releasing and securing means comprise bolt means threadably attached to the support means and the tine member, respectively.
References Cited (Backward Citations)
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US2477167A
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US2684164A
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US3434366A
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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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |