US4012055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for extending a motorcycle fork
Assignee: Individual
•
Filing: 1976-03-22
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Granted: 1977-03-15
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Expires: 1996-03-22
Abstract
Abstract There is disclosed an extension for a motorcycle fork of the type including a downwardly biased damper and having its upper extremity received in a hollow fork tine and having its bottom extremity secured to the bottom end of a hollow slider which has its upper extremities telescoped over such tine. The bottom wall of the slider is severed from the slider itself and the damper rod extended and severed medially. A damper rod extension of a predetermined length is fitted between the top and bottom sections of such damper rod and has its opposite ends affixed to the medial ends of the damper rod sections. The damper rod is then retracted into the tine and a slider extension formed with an extension chamber having an axial length at least equal to such predetermined length is fitted over the lower end of such damper rod and affixed thereto. The slider extension is then secured to the lower extremity of such slider as by welding.
Inventors
- 👤 Robert J. Ottow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:20
CPC Classifications
B; B62; B62K; B62K25/00; B62K25/04; B62K25/06; B62K25/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
124 words
A motorcycle fork extension for extending the travel of a motorcycle fork of the type including a downwardly biased damper rod having a head on the bottom end thereof and a fork slider fitted telescopically over the bottom extremity of a fork tine receiving such rod, said extension comprising: a damper rod extension of a selected length received medially in said rod and having the opposite ends thereof affixed to the ends of upper and lower sections of said damper rod; a slider extension affixed to the lower end of said slider and including an upwardly opening cylindrical registration chamber of at least said selected lengths for receipt of said head; and means affixing the bottom end of said damper rod to said extension.
Claim 2
Dependent Claim
124 words
A motorcycle fork extension for extending the travel of a motorcycle fork of the type including a downwardly biased damper rod having a head on the bottom end thereof and a fork slider fitted telescopically over the bottom extremity of a fork tine receiving such rod, said extension comprising: a damper rod extension of a selected length received medially in said rod and having the opposite ends thereof affixed to the ends of upper and lower sections of said damper rod; a slider extension affixed to the lower end of said slider and including an upwardly opening cylindrical registration chamber of at least said selected lengths for receipt of said head; and means affixing the bottom end of said damper rod to said extension.
Claim 3
Dependent Claim
39 words
A motorcycle fork extension as set forth in claim 1 wherein: said damper rod is hollow and said rod extension is formed on its opposite extremities with reduced-in-diameter extremities telescopically received in the proximate extremities of said damper rod.
Claim 4
Dependent Claim
20 words
A motorcycle fork extension as set forth in claim 1 wherein: said slider extension includes cooling fins radiating outwardly therefrom.
Claim 5
Independent Claim
139 words
A method of extending the travel of a motorcycle fork of the type including a damper rod received at its upper extremity in a hollow fork tine and having its bottom end secured to a hollow slider which has its upper extremity telescoped over said tine and having a predetermined length of travel, said method including the following steps: cutting the bottom wall of said slider off; extending said damper rod from said tine; severing said damper rod medially; separating the upper and lower sections of said damper rod and affixing the opposite ends of a damper extension of a predetermined length to the proximate ends of said upper and lower sections; forming a slider extension to provide an extension chamber of at least said predetermined length; and affixing said slider extension to the lower extremity of said slider.
Claim 6
Independent Claim
139 words
A method of extending the travel of a motorcycle fork of the type including a damper rod received at its upper extremity in a hollow fork tine and having its bottom end secured to a hollow slider which has its upper extremity telescoped over said tine and having a predetermined length of travel, said method including the following steps: cutting the bottom wall of said slider off; extending said damper rod from said tine; severing said damper rod medially; separating the upper and lower sections of said damper rod and affixing the opposite ends of a damper extension of a predetermined length to the proximate ends of said upper and lower sections; forming a slider extension to provide an extension chamber of at least said predetermined length; and affixing said slider extension to the lower extremity of said slider.
Claim 7
Dependent Claim
62 words
A method according to claim 4 wherein said rod includes a circular head on the lower extremity thereof that includes: the step of forming said slider with a cylindrical relief bore projecting upwardly from the bottom extremity thereof; and forming said slider with a cylindrical relief bore complementing said first relief bore and terminating in an indexing ring closely fitting said head.
Claim 8
Dependent Claim
21 words
A method according to claim 4 that includes: the step of forming said slider extension with cooling fins radiating outwardly therefrom.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |