Patent US3899209A successfully refreshed from Google Patents.
US3899209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable motorcycle backrest
Assignee: Individual
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Filing: 1974-05-17
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Granted: 1975-08-12
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Expires: 1994-05-17
Abstract
Abstract An adjustable backrest apparatus for a motorcycle or the like comprises a base plate secured to the vertical rear safety bar of the vehicle, and an extension plate hinged at its lower end to the lower end of the base plate. Hinged to the extension plate is a cushioned back support joined at the upper ends thereof. A pair of extensible support members are provided, one end of each pivotally secured to a clevis bracket medially disposed on the extension plate. The distal end of one extensible member is pivotally joined to the upper end of the base plate, while the distal end of the other extensible member is pivotally joined to the lower end of the back support. Each extensible member is adjustable in length to permit variable spacing and angular orientation of the back support with respect to the vertical safety bar.
Inventors
- 👤 Richard H Schulz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:10
CPC Classifications
B; B62; B62J; B62J1/00; B62J1/28; A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; B60; B60N; B60N2/00; B60N2/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
136 words
An adjustable backrest apparatus comprising a base plate, a back support plate spaced apart and opposed to said base plate, a support member hingeably secured between said base plate and said back support plate and extending obliquely therebetween with one edge portion of said member being pivotally connected to one edge portion of one of said plates and the other edge portion of said member being pivotally connected to an opposite edge portion of the other of said plates, and extension means pivotally secured to a medial portion of said support member and extending from opposite sides thereof to said base plate and to said back support plate and hingeably connected to each of said plates to the opposite edge portions from their connections to said member for selectively varying the spacing and angular orientation between.
Claim 2
Dependent Claim
136 words
An adjustable backrest apparatus comprising a base plate, a back support plate spaced apart and opposed to said base plate, a support member hingeably secured between said base plate and said back support plate and extending obliquely therebetween with one edge portion of said member being pivotally connected to one edge portion of one of said plates and the other edge portion of said member being pivotally connected to an opposite edge portion of the other of said plates, and extension means pivotally secured to a medial portion of said support member and extending from opposite sides thereof to said base plate and to said back support plate and hingeably connected to each of said plates to the opposite edge portions from their connections to said member for selectively varying the spacing and angular orientation between.
Claim 3
Dependent Claim
22 words
The adjustable backrest apparatus of claim 1, wherein said extension means comprises a pair of extensible members individually selectively adjustable in length.
Claim 4
Dependent Claim
29 words
The adjustable backrest apparatus of claim 2 wherein each of said pair of extensible members is pivotally joined at one end to a medial portion of said support member.
Claim 5
Dependent Claim
25 words
The adjustable backrest apparatus of claim 2 wherein each extensible member includes a tubular member and an extension member slidably received within said tubular member.
Claim 6
Dependent Claim
19 words
The adjustable backrest apparatus of claim 4 wherein said extension member includes a plurality of notches longitudinally spaced therein.
Claim 7
Dependent Claim
29 words
The adjustable backrest apparatus of claim 5 further including a detent secured to said tubular member for releasably engaging a selected one of said notches in said extension member.
Claim 8
Dependent Claim
34 words
The adjustable backrest apparatus of claim 6 wherein each detent includes a pawl integrally formed on a lever, and a spring for biasing said lever to engage said pawl in one of said notches.
Claim 9
Dependent Claim
45 words
The adjustable backrest apparatus of claim 3 wherein one extensible member includes a clevis, the other extensible member includes a tongue disposed within said clevis, and a clevis pin medially secured to said support member and joining said clevis and tongue to said support member.
References Cited (Backward Citations)
US1510858A
Cited
US2829863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |