US3807285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connection between rod and piston of fluid power cylinder
Assignee: Eaton Corp
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Filing: 1972-04-17
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Granted: 1974-04-30
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Expires: 1992-04-17
Abstract
Abstract A positive connection between rod and piston of a double end rod fluid power cylinder accomplished with a single v-shaped groove in the piston rod, a single snap ring and a threaded bushing. The assembly tolerates ordinary dimensional variations and eliminates play between rod and piston by forcing the snap ring into contact with both rod and piston by means of beveled surfaces in the rod groove, in the piston and on the adjustable bushing which brings these four beveled surfaces into bearing on the snap ring.
Inventors
- 👤 J Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:33
CPC Classifications
F; F16; F16J; F16J1/00; F16J1/10; F16J1/12; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7075; Y10T403/7077
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A piston rod connection in a double ended rod fluid power cylinder wherein the improvement comprises: a single circumferential groove in the piston rod having a truncated v-shaped cross section; ring means partially receivable in the groove, said ring means being hexagonal in cross section with its longitudinal dimension in cross section being greater than its radial dimension in cross section; a piston; a concentric opening through the piston for receipt of the piston rod having an enlarged portion therein, a first beveled surface in the enlarged portion of the opening positioned to contact a portion of the ring means; a bushing member axially receivable in the opening having a second companion beveled surface oppositely positioned with respect to said first surface; and means for urging the bushing into the opening whereby the two beveled surfaces are brought together forcing the ring means into the circumferential groove effecting a rigid connection.
Claim 2
Dependent Claim
151 words
A piston rod connection in a double ended rod fluid power cylinder wherein the improvement comprises: a single circumferential groove in the piston rod having a truncated v-shaped cross section; ring means partially receivable in the groove, said ring means being hexagonal in cross section with its longitudinal dimension in cross section being greater than its radial dimension in cross section; a piston; a concentric opening through the piston for receipt of the piston rod having an enlarged portion therein, a first beveled surface in the enlarged portion of the opening positioned to contact a portion of the ring means; a bushing member axially receivable in the opening having a second companion beveled surface oppositely positioned with respect to said first surface; and means for urging the bushing into the opening whereby the two beveled surfaces are brought together forcing the ring means into the circumferential groove effecting a rigid connection.
References Cited (Backward Citations)
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US3334937A
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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) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |