Patent US3773126A successfully refreshed from Google Patents.
US3773126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snowmobile suspension system
Assignee: Certified Parts Corp
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Filing: 1971-09-02
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Granted: 1973-11-20
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Expires: 1991-09-02
Abstract
Abstract An improved suspension system for an endless track vehicle having a body, an endless track, and a front and rear axle, wherein said improved suspension system includes a pair of elongated members disposed beneath said vehicle and within said endless track, and a plurality of track engaging means supported by said elongated members, each of said elongated members having one end connected with the rear axle of the vehicle and the other end extending forwardly toward the front axle of said vehicle with the forward portion of each of the members being resiliently mounted with respect to the vehicle frame by a support means.
Inventors
- 👤 G Irvine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:51
CPC Classifications
B; B62; B62M; B62M27/00; B62M27/02; B62M2027/026
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
249 words
A suspension system for an endless track vehicle having a body, an endless track and a rear axle and a front axle supported by the vehicle body, said suspension system comprising: a pair of elongated members each supported at one end by said rear axle for pivotal movement only and extending forwardly toward said front axle; a single support means associated with each of said elongated members for resiliently supporting said elongated member with respect to the body of said vehicle, each of said support means having a rigid arm pivotally connected at one end to said elongated member between its ends and pivotally connected at the other end to the body of said vehicle at a point forward of the point at which said rigid arm is connected to said elongated member and at a point above said elongated member, said support means further including a leaf spring connected at one end to the body of said vehicle near the point at which said rigid arm is connected and connected at the other end to said elongated member for urging said rigid arm upwardly and rearwardly with respect to said elongated member; means connected with said elongated member near the point at which said rigid arm is pivotally connected thereto for engaging said rigid arm and limiting the upward and rearward pivotal movement thereof with respect to said elongated member; track engaging means connected with said pair of elongated members for engaging the inside surface of said track.
Claim 2
Dependent Claim
249 words
A suspension system for an endless track vehicle having a body, an endless track and a rear axle and a front axle supported by the vehicle body, said suspension system comprising: a pair of elongated members each supported at one end by said rear axle for pivotal movement only and extending forwardly toward said front axle; a single support means associated with each of said elongated members for resiliently supporting said elongated member with respect to the body of said vehicle, each of said support means having a rigid arm pivotally connected at one end to said elongated member between its ends and pivotally connected at the other end to the body of said vehicle at a point forward of the point at which said rigid arm is connected to said elongated member and at a point above said elongated member, said support means further including a leaf spring connected at one end to the body of said vehicle near the point at which said rigid arm is connected and connected at the other end to said elongated member for urging said rigid arm upwardly and rearwardly with respect to said elongated member; means connected with said elongated member near the point at which said rigid arm is pivotally connected thereto for engaging said rigid arm and limiting the upward and rearward pivotal movement thereof with respect to said elongated member; track engaging means connected with said pair of elongated members for engaging the inside surface of said track.
Claim 3
Dependent Claim
22 words
The suspension system of claim 1 having means for resiliently suspending said rear axle with respect to the body of said vehicle.
Claim 4
Dependent Claim
17 words
The suspension system of claim 1 wherein said track engaging means includes a plurality of bogie wheels.
Claim 5
Dependent Claim
15 words
The suspension system of claim 1 wherein said track engaging means includes a slide rail.
Claim 6
Dependent Claim
42 words
The suspension system of claim 1 wherein said support means are connected to each of said elongated members at a point so that at least one fourth of the length of said elongated member extends on either side of said connection point.
Claim 7
Dependent Claim
29 words
The suspension system of claim 1 wherein said support means are connected to each of said elongated members at a point midway between the ends of said elongated member.
Claim 8
Dependent Claim
18 words
The suspension system of claim 1 wherein each of said elongated members includes a relatively rigid tubular member.
Claim 9
Dependent Claim
28 words
The suspension system of claim 7 wherein said means for limiting the rearward pivotal movement of said arms includes an adjustable stop member secured to said tubular member.
Claim 10
Dependent Claim
44 words
The suspension system of claim 7 wherein said rigid arm is pivotally connected to a third axle secured to said body and extending transverse thereto, the position of said third axle being adjustable so as to vary the cushioning effect of said suspension system.
Claim 11
Dependent Claim
21 words
The suspension system of claim 9 having means for resiliently suspending the rear axle of said vehicle including a shock absorber.
Claim 12
Dependent Claim
123 words
A suspension system for an endless track vehicle having a body, an endless track, a rear axle and a front axle, said suspension system comprising: a pair of elongated members connected at one end to said rear axle and extending forwardly toward said front axle, said elongated members including a pair of vertically spaced spring members and resilient means disposed between each pair of spring members for maintaining said spring members in a vertically spaced relationship; support means connected with each of said elongated members between their ends thereof for resiliently suspending said pair of members with respect to the body of said vehicle; and track engaging means connected with said pair of elongated members for engaging the inside surface of said track.
Claim 13
Dependent Claim
123 words
A suspension system for an endless track vehicle having a body, an endless track, a rear axle and a front axle, said suspension system comprising: a pair of elongated members connected at one end to said rear axle and extending forwardly toward said front axle, said elongated members including a pair of vertically spaced spring members and resilient means disposed between each pair of spring members for maintaining said spring members in a vertically spaced relationship; support means connected with each of said elongated members between their ends thereof for resiliently suspending said pair of members with respect to the body of said vehicle; and track engaging means connected with said pair of elongated members for engaging the inside surface of said track.
Claim 14
Dependent Claim
22 words
The suspension system of claim 11 wherein each of said pair of vertically spaced spring members is a pair of leaf springs.
Claim 15
Dependent Claim
66 words
The suspension system of claim 11 wherein each of said support means includes a relatively rigid arm, pivotally connected at one End to the body of said vehicle and pivotally connected at the other end to one of said pair of vertically spaced spring members, and a third elongated spring member extending between the body of said vehicle and one of said pair of spring members.
Claim 16
Dependent Claim
44 words
The suspension system of claim 13 wherein said rigid arm is pivotally connected to a third axle secured to said body and extending transverse thereto, the position of said third axle being adjustable so as to vary the cushioning effect of said suspension system.
Claim 17
Dependent Claim
29 words
The suspension system of claim 13 wherein one end of said rigid arm includes a telescopic member and a threaded member for adjusting the length of said rigid arm.
Claim 18
Dependent Claim
26 words
The suspension system of claim 11 wherein said resilient means includes a plurality of resilient members disposed between said pair of spring members at spaced intervals.
Claim 19
Dependent Claim
17 words
The suspension system of claim 16 wherein said track engaging means are supported by said resilient members.
Claim 20
Dependent Claim
33 words
The suspension system of claim 13 having means for limiting the rearward pivotal movement of each of said relatively rigid arms to thereby control the elevation of the front end of said vehicle.
Claim 21
Dependent Claim
37 words
The suspension system of claim 18 wherein said means for limiting the rearward pivotal movement of said arms includes an adjustable stop member secured to the upper of each of said pair of vertically spaced spring members.
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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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |