US3743331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft-to-hub coupling
Assignee: Lanteris Space LLC
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Filing: 1971-12-30
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Granted: 1973-07-03
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Expires: 1991-12-30
Abstract
Abstract A shaft is coupled to a hub by means of a resilient,helical, wire coil threadedly received in matching grooves formed externally on a cylindrical shaft section and internally within a cylindrical opening in the hub. The land sections between respective grooves in the shaft section and in the hub opening are of substantial extent and closely engage one another. A tight, torque-transmitting coupling is afforded, which coupling is capable of ready assembly and disassembly.
Inventors
- 👤 I Mcwethy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:42
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7018
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
148 words
In a shaft to hub coupling: a shaft having a generally cylindrical section provided with a helical groove and an end; means defining a hub having a generally cylindrical opening receiving said shaft section and having a helical groove matching the helical groove in said shaft section; each said shaft section and said hub opening including land areas of substantial extent between their respective grooves and disposed in close fitting engagement with one another; a helical wire coil threadedly received in said matching helical groove in provision of a threaded coupling between said shaft and said hub; and stop means comprising a member releasably affixed to said hub, extending over said hub opening, and disposed in abutting engagement with the end of said generally cylindrical shaft section, said stop means being effective to establish and maintain predetermined axial positioning of the threaded hub on the threaded shaft section.
Claim 2
Dependent Claim
148 words
In a shaft to hub coupling: a shaft having a generally cylindrical section provided with a helical groove and an end; means defining a hub having a generally cylindrical opening receiving said shaft section and having a helical groove matching the helical groove in said shaft section; each said shaft section and said hub opening including land areas of substantial extent between their respective grooves and disposed in close fitting engagement with one another; a helical wire coil threadedly received in said matching helical groove in provision of a threaded coupling between said shaft and said hub; and stop means comprising a member releasably affixed to said hub, extending over said hub opening, and disposed in abutting engagement with the end of said generally cylindrical shaft section, said stop means being effective to establish and maintain predetermined axial positioning of the threaded hub on the threaded shaft section.
Claim 3
Dependent Claim
30 words
A coupling according to claim 1, and characterized further in that said stop means disposed in abutting engagement with said shaft section comprises a plate releasably affixed to said hub.
Claim 4
Dependent Claim
38 words
A coupling according to claim 1, and characterized further in that said stop means disposed in abutting engagement with said shaft section comprises plug means threadedly retained in a second set of threads provided in the hub opening.
Claim 5
Dependent Claim
47 words
A coupling according to claim 3, and characterized in that each said helical coil and its matching grooves are of helical extent to the opposite hand as respects the helical extent of the helical threads on said plug means and its matching threads in said hub opening.
Claim 6
Dependent Claim
176 words
A torque transmissive shaft and hub assembly comprising: a shaft having an end and a generally cylindrical portion provided with a helical groove; means defining a hub having a generally cylindrical opening receiving said shaft cylindrical portion and having a helical groove matching the helical groove in said shaft cylindrical portion; each said shaft cylindrical portion and said hub opening including land areas of substantial extent between their respective grooves and disposed in close fitting engagement with one another; a helical wire coil threadedly received in said matching helical grooves in provision of a threaded coupling between said shaft and said hub; and stop means including a member releasably affixed to said hub, extending over said hub opening, and disposed in abutting engagement with said shaft end, said stop means being effective to react between said shaft end and said hub to establish and maintain predetermined axial positioning of the threaded hub section on the threaded shaft portion upon application of torque to said assembly in a direction tending to thread said hub onto said shaft.
Claim 7
Dependent Claim
176 words
A torque transmissive shaft and hub assembly comprising: a shaft having an end and a generally cylindrical portion provided with a helical groove; means defining a hub having a generally cylindrical opening receiving said shaft cylindrical portion and having a helical groove matching the helical groove in said shaft cylindrical portion; each said shaft cylindrical portion and said hub opening including land areas of substantial extent between their respective grooves and disposed in close fitting engagement with one another; a helical wire coil threadedly received in said matching helical grooves in provision of a threaded coupling between said shaft and said hub; and stop means including a member releasably affixed to said hub, extending over said hub opening, and disposed in abutting engagement with said shaft end, said stop means being effective to react between said shaft end and said hub to establish and maintain predetermined axial positioning of the threaded hub section on the threaded shaft portion upon application of torque to said assembly in a direction tending to thread said hub onto said shaft.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |