Patent US3810706A successfully refreshed from Google Patents.
US3810706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable sectional racetrack for automobiles or motorcycles
Assignee: Individual
•
Filing: 1972-11-13
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Granted: 1974-05-14
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Expires: 1992-11-13
Abstract
Abstract A portable racetrack is made up of a plurality of types of sections provided with intercoupling means at each end. The types of sections provided include flat straightaway sections; curved sections which are adjustable to any desired degree of bank; and straight sections which are likewise adjustable to provide any desired degree of bank. Access ramps are provided. The adjustable bankable sections are capable of being skewed into configurations adapting them to be joined either to a flat straightaway section or a banked section at one end and to another differently banked section at the other end. A yieldable safety wall is provided at the high side of each banked section.
Inventors
- 👤 H Grimm
- 👤 C Matsuo
- 👤 D Wilborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:06
CPC Classifications
A; A63; A63H; A63H18/00; A63H18/02; E; E01; E01C; E01C5/00; E01C5/22; E01C9/00; E01C9/08; E01F; E01F15/00; E01F15/02; E01F15/025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
102 words
A portable, demountable closed loop racetrack assembly for automobiles and motorcylcles comprising a series of detachably coupled sections including at least one horizontally disposed straightaway section and a plurality of banked curving sections; each of said sections including means forming a base, support members mounted on the base, and an unbroken traction surface sheet seating on the support members, means detachably coupling one section to another, and means banking the curving sections, at least one of said banked sections being adjustably skewable for detachable coupling to a horizontally disposed section at one end and to a banked section at the other end.
Claim 2
Dependent Claim
102 words
A portable, demountable closed loop racetrack assembly for automobiles and motorcylcles comprising a series of detachably coupled sections including at least one horizontally disposed straightaway section and a plurality of banked curving sections; each of said sections including means forming a base, support members mounted on the base, and an unbroken traction surface sheet seating on the support members, means detachably coupling one section to another, and means banking the curving sections, at least one of said banked sections being adjustably skewable for detachable coupling to a horizontally disposed section at one end and to a banked section at the other end.
Claim 3
Dependent Claim
59 words
A racetrack assembly as defined in claim 1, in which the traction surface sheet on at least one of said sections is flexible and that section is adjustably skewable for detachable coupling at its opposite ends to the adjacent ends of others of said sections which Adjacent ends are disposed at a vertical angle with respect to each other.
Claim 4
Dependent Claim
48 words
A racetrack assembly as defined in claim 2, in which the banked curving sections each comprising transverse members at opposite ends of the section, means supporting said transverse members at an angle transversely of the track, and longitudinally disposed surface sheet supporting members secured to the transverse members.
Claim 5
Dependent Claim
86 words
A racetrack assembly as defined in claim 1 which includes a yieldable safety barrier along the outside of at least some of the banked sections comprising a series of safety wall support arms pivotally carried by said bases and disposed in alignment with each other immediately adjacent the outside edge of said traction surface sheet, a plurality of cables interconnecting said arms, and dashpot means individual to said arms for cushioning movement thereof and of said cables incident to impact of a vehicle against said barrier.
Claim 6
Dependent Claim
29 words
A racetrack assembly as defined in claim 4, additionally including a sheet of flexible material carried by said arms and interposed between said cables and said traction surface sheet.
Claim 7
Dependent Claim
95 words
A sectional unit adapted for detachable coupling with similar units into a racetrack assembly comprising a series of traction surface support beams disposed in parallel alignment with each other, a pair of channel members secured to said beams at opposite ends thereof, a flexible sheet covering said beams and channel members and secured thereto to present an upper traction surface, and means for detachably connecting the channel member of said unit with a channel member of another such unit to present a substantially continuous upper traction surface formed by the flexible sheets of said units.
Claim 8
Dependent Claim
95 words
A sectional unit adapted for detachable coupling with similar units into a racetrack assembly comprising a series of traction surface support beams disposed in parallel alignment with each other, a pair of channel members secured to said beams at opposite ends thereof, a flexible sheet covering said beams and channel members and secured thereto to present an upper traction surface, and means for detachably connecting the channel member of said unit with a channel member of another such unit to present a substantially continuous upper traction surface formed by the flexible sheets of said units.
Claim 9
Dependent Claim
81 words
A sectional unit according to claim 6 additionally provided with means for supporting the same in an angularly banked relationship to a supporting surface comprising a base, a banking support comprising a pair of beams, means including separate jacking mechanisms for supporting each of said pair of beams in any of a series of angularly disposed positions with respect to said base, and means for releasably locking each of said track surface support beams to the beams of said banking support.
References Cited (Backward Citations)
US3301146A
Cited
US3445063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |