Patent US3751065A successfully refreshed from Google Patents.
US3751065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Racing car and chassis therefor
Assignee: PERFECT PARTS COMPANY
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Filing: 1971-12-16
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Granted: 1973-08-07
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Expires: 1991-12-16
Abstract
Abstract A radio control racing car having a resilient suspension system which is adjustable is provided. The wheels of the car are permitted to flex substantially independently of each other with a positive control provided for the amount of flexibility of each wheel.
Inventors
- 👤 M Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:01
CPC Classifications
A; A63; A63H; A63H17/00; A63H17/26; A63H17/262; B; B60; B60G; B60G2300/00; B60G2300/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
123 words
A racing car comprising a chassis having a main body portion, a cantilever segment on said chassis, said chassis being supported by a set of front wheels and a set of rear wheels, said segment of the chassis supporting one set of said wheels and constituting a flexible suspension for said one set of wheels, said segment having converging portions, means on the chassis for varying the flexibility of one of said segment portions whereby the suspension of the wheels of said one set may be substantially individually varied, said means for varying the flexibility of said portion of said segment including slots on opposite sides of said segment, and locking means in the slots for varying the effective length of the slots;.
Claim 2
Dependent Claim
123 words
A racing car comprising a chassis having a main body portion, a cantilever segment on said chassis, said chassis being supported by a set of front wheels and a set of rear wheels, said segment of the chassis supporting one set of said wheels and constituting a flexible suspension for said one set of wheels, said segment having converging portions, means on the chassis for varying the flexibility of one of said segment portions whereby the suspension of the wheels of said one set may be substantially individually varied, said means for varying the flexibility of said portion of said segment including slots on opposite sides of said segment, and locking means in the slots for varying the effective length of the slots;.
Claim 3
Dependent Claim
28 words
A racing car as set forth in claim 1 including rigid portions of said chassis being inclined at the same angle as said one portion of the segment.
Claim 4
Dependent Claim
20 words
A racing car in accordance with claim 1 wherein said segment extends rearwardly from the front end of the chassis.
Claim 5
Dependent Claim
29 words
A racing car in accordance with claim 1 wherein the chassis includes three parallel sections defined by upstanding rails with the middle section being longer than the other sections.
Claim 6
Dependent Claim
69 words
A racing car chassis comprising a body portion having a cantilever segment thereon for flexible suspension of wheels to support the chassis, said segment having one end fixed to said chassis and extending rearwardly from the front end of the chassis, said segment having an upwardly inclined portion and being secured to a downwardly inclined portion of flexible material, and means to connect wheels to one of said portions.
Claim 7
Dependent Claim
69 words
A racing car chassis comprising a body portion having a cantilever segment thereon for flexible suspension of wheels to support the chassis, said segment having one end fixed to said chassis and extending rearwardly from the front end of the chassis, said segment having an upwardly inclined portion and being secured to a downwardly inclined portion of flexible material, and means to connect wheels to one of said portions.
Claim 8
Dependent Claim
20 words
A chassis in accordance with claim 5 including means on the chassis to selectively vary the flexibility of said segment.
Claim 9
Dependent Claim
45 words
A chassis in accordance with claim 5 wherein the portion of the segment integral at one end with the chassis inclined upwardly, and the other portion being inclined downwardly, the downwardly inclined portion being the portion of the segment to which wheels will be coupled.
Claim 10
Dependent Claim
34 words
A chassis in accordance with claim 7 wherein said downwardly inclined portion forms an acute angle with the horizontal which is greater than the corresponding angle between the horizontal and said upwardly inclined portion.
Claim 11
Dependent Claim
38 words
A chassis in accordance with claim 5 wherein said body portion is provided with an opening below said segment, a major portion of said segment being positioned at an elevation which is above the elevation of the opening.
Claim 12
Dependent Claim
66 words
A chassis in accordance with claim 5 wherein said body portion has a pair of parallel longitudinally extending rails, said segment being supported at the front end of said chassis between said rails, said segment being connected to the chassis by a portion at an elevation below the upper edge of said rails, with a portion of said segment extending above the elevation of the rails.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |