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US3946824A Expired / Lapsed US ⏱️ 0.0 years remaining

Chassis for a vehicle with large diameter single front wheel

Assignee: RICKEL Manufacturing CORP
•
Filing: 1974-05-28
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Granted: 1976-03-30
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Expires: 1994-05-28
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Abstract

Abstract A chassis for a vehicle having three large diameter, low soil pressure tires includes two elongate linear side rails which diverge from one another from back to front and are spaced far enough apart at the front to house a large engine and more closely at the rear to reduce the wheel span. A special front portion to which the front wheel assembly and associated steering means are mounted is constructed of beam-like members extending forwardly and upwardly from the side rails. The beamlike sides of the front portion are bent to forwardly approach one another, terminating at a bearing which receives a mounting yoke carrying the front tire.

Inventors

  • 👤 Oden Jester
  • 👤 Melvin A. Bergkamp

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 18:43
CPC Classifications
B; B62; B62D; B62D61/00; B62D61/06; B62D61/08

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 254 words
A chassis for a vehicle having a single front tire, said chassis comprising: a pair of spaced apart elongate linear frame members extending along a major portion of the length of said chassis and diverging from one another in a gradual manner from the rear of the chassis toward the front, said frame members being sloped gradually upwardly relative to horizontal from the rear of the chassis toward the front; a rear axle secured to said elongate frame members toward the rearward portion thereof, said rear axle rotatably carrying a pair of rear wheels outwardly of the respective frame members; a front chassis portion having opposite beam-like sides greater in cross sectional area than said elongate frame members, said sides being secured to the forward portions of said elongate frame members in forward and upward extension therefrom with the rearward section of each side being substantially coplanar with the corresponding frame member for a significant distance, said sides being bent toward one another at the forward ends of said rearward sections about generally vertical axes spaced forwardly of the junction of said sides with said elongate frame members and terminating in substantially horizontal arm portions, said arm portions gradually approaching one another as they extend forwardly; an engine housing between the forward end portions of said elongate frame members and behind said vertical axes; a wheel yoke positioned beneath said arm portions and carrying said front tire; and means for pivotally connecting said wheel yoke with said arm portions near the forward ends thereof.
Claim 2
Dependent Claim 254 words
A chassis for a vehicle having a single front tire, said chassis comprising: a pair of spaced apart elongate linear frame members extending along a major portion of the length of said chassis and diverging from one another in a gradual manner from the rear of the chassis toward the front, said frame members being sloped gradually upwardly relative to horizontal from the rear of the chassis toward the front; a rear axle secured to said elongate frame members toward the rearward portion thereof, said rear axle rotatably carrying a pair of rear wheels outwardly of the respective frame members; a front chassis portion having opposite beam-like sides greater in cross sectional area than said elongate frame members, said sides being secured to the forward portions of said elongate frame members in forward and upward extension therefrom with the rearward section of each side being substantially coplanar with the corresponding frame member for a significant distance, said sides being bent toward one another at the forward ends of said rearward sections about generally vertical axes spaced forwardly of the junction of said sides with said elongate frame members and terminating in substantially horizontal arm portions, said arm portions gradually approaching one another as they extend forwardly; an engine housing between the forward end portions of said elongate frame members and behind said vertical axes; a wheel yoke positioned beneath said arm portions and carrying said front tire; and means for pivotally connecting said wheel yoke with said arm portions near the forward ends thereof.
Claim 3
Dependent Claim 40 words
The combination of claim 1, wherein each side of said front portion comprises a pair of oppositely oriented channels secured together, each flange portion of one of said channels overlapping the corresponding flange portion of the other of said channels.
Claim 4
Dependent Claim 48 words
The chassis as in claim 2, wherein the oppositely oriented channels of said sides present openings in the rearward ends thereof, the forward portions of said elongate frame members being received in said openings and being secured to the respective sides with the sides overlapping said frame members.
Claim 5
Dependent Claim 35 words
The combination of claim 1, each arm portion comprising a pair of oppositely oriented channel sections, each flange portion of one of said channels overlapping the corresponding flange portion of the other of said channels.
Claim 6
Dependent Claim 24 words
The combination of claim 1, including at least one tubular strut extending between and secured at its opposite ends to the respective frame members.
Claim 7
Dependent Claim 20 words
The chassis as in claim 1, the angle of upward slope of said linear frame members being approximately 3° .

References Cited (Backward Citations)

US2192560A Cited
US2177991A Cited
US2467516A Cited
US3135347A Cited
US3438454A Cited
US3519097A Cited
US3695374A Cited
US3788416A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-03-30 1979-09-29 1980-03-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-03-30 1983-09-29 1984-03-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-03-30 1987-09-29 1988-03-30 $7700.00 Window Closed / Lapsed

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