US3826388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel/track loader
Assignee: Caterpillar Inc
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Filing: 1971-08-16
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Granted: 1974-07-30
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Expires: 1991-08-16
Abstract
Abstract A loader vehicle rides on a set of track assemblies and a set of wheels and is articulated at the mid-point between the wheel assembly and the track assembly.
Inventors
- 👤 D Oldenburg
- 👤 J Sturges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:46
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/34; E02F3/3405; E02F3/3411; E02F9/00; E02F9/08; E02F9/0841
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
An articulated loader vehicle, said vehicle comprising: a forward body section having a powered front axle; a rearward body section having a powered rear axle; a pivot joint connecting said forward section and said rearward section together for pivotal movement about a vertical axis disposed substantially at the center of said vehicle; an engine mounted on said rearward section and operatively connected to means for driving said front and said rear axles; a pair of endless tracks mounted on opposite ends of said front axle and operatively connected to be driven thereby; each of said tracks being triangular in configuration with the base of said triangle engaging the ground, and with the drive to said tracks being at the apex of said triangle; a pair of wheels mounted on opposite ends of said rear axle and operatively connected to be driven thereby; supports arms, means pivotally mounting said arms on said forward body section, said pivot means being disposed between the forward and rearward end of said triangle base; and a loader bucket mounted on said support arms opposite said pivot means whereby loads carried by said vehicle are supported by said tracks.
Claim 2
Dependent Claim
193 words
An articulated loader vehicle, said vehicle comprising: a forward body section having a powered front axle; a rearward body section having a powered rear axle; a pivot joint connecting said forward section and said rearward section together for pivotal movement about a vertical axis disposed substantially at the center of said vehicle; an engine mounted on said rearward section and operatively connected to means for driving said front and said rear axles; a pair of endless tracks mounted on opposite ends of said front axle and operatively connected to be driven thereby; each of said tracks being triangular in configuration with the base of said triangle engaging the ground, and with the drive to said tracks being at the apex of said triangle; a pair of wheels mounted on opposite ends of said rear axle and operatively connected to be driven thereby; supports arms, means pivotally mounting said arms on said forward body section, said pivot means being disposed between the forward and rearward end of said triangle base; and a loader bucket mounted on said support arms opposite said pivot means whereby loads carried by said vehicle are supported by said tracks.
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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |