Patent US3871786A successfully refreshed from Google Patents.
US3871786A
Expired / Lapsed
US
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Shaft coupling
Assignee: Individual
•
Filing: 1973-02-05
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Granted: 1975-03-18
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Expires: 1993-02-05
Abstract
Abstract A shaft coupling comprising three sections, i.e. two coupling shaft sections and an intermediate member interconnecting said coupling sections. External teeth are provided on said coupling sections, said teeth meshing with external teeth on said intermediate portion, the dimensional relations between the two sets of teeth being such that the inner diameter of the teeth on said intermediate member being larger than the inner diameter of the teeth on said coupling sections whereby easy assembly of the coupling and a certain angular adjustment between the two coupling sections are permitted, and also some flexibility and resiliency of the coupling.
Inventors
- 👤 Sven Beinhard Rennerfelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:01
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/16; F16D3/18; F16D3/50; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49462; Y10T29/49465; Y10T403/00; Y10T403/57; Y10T403/70; Y10T403/7026; Y10T403/7032
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
242 words
In an assembly for coupling two shafts disposed at least substantially in alignment with each other, the combination of: a pair of shaft-assocIated sections having spaced, mutually opposed end portions; and an intermediate section disposed between and joining said shaftassociated sections; wherein the improvement comprises: an end portion on each of shaft-associated sections, each such end portion including a body having a series of external gear teeth integrally joined to the associated body for a portion only of the widths of the gear teeth whereby to project axially beyond said associated body and to define open spaces between adjacent pairs of gear teeth; said intermediate section including an annular body having external gear teeth integrally joined to said annular body for a portion only of the widths of the gear teeth and projecting axially beyond said annular body on opposite sides thereof and defining two sets of open spaces between adjacent pairs of teeth, one on one end of said annular body and the other on the other end thereof, the projecting base portions of at least those axially projecting portions of the gear teeth on opposite sides of said intermediate section being undercut by an amount sufficient to allow axial interdigitation between such axially projecting portions and the axially projecting gear teeth portions of the respective shaft-associated sections, said annular body of the intermediate section being of sufficiently thin radial thickness to permit deformation of said annular body into eliptical form.
Claim 2
Dependent Claim
242 words
In an assembly for coupling two shafts disposed at least substantially in alignment with each other, the combination of: a pair of shaft-assocIated sections having spaced, mutually opposed end portions; and an intermediate section disposed between and joining said shaftassociated sections; wherein the improvement comprises: an end portion on each of shaft-associated sections, each such end portion including a body having a series of external gear teeth integrally joined to the associated body for a portion only of the widths of the gear teeth whereby to project axially beyond said associated body and to define open spaces between adjacent pairs of gear teeth; said intermediate section including an annular body having external gear teeth integrally joined to said annular body for a portion only of the widths of the gear teeth and projecting axially beyond said annular body on opposite sides thereof and defining two sets of open spaces between adjacent pairs of teeth, one on one end of said annular body and the other on the other end thereof, the projecting base portions of at least those axially projecting portions of the gear teeth on opposite sides of said intermediate section being undercut by an amount sufficient to allow axial interdigitation between such axially projecting portions and the axially projecting gear teeth portions of the respective shaft-associated sections, said annular body of the intermediate section being of sufficiently thin radial thickness to permit deformation of said annular body into eliptical form.
Claim 3
Dependent Claim
27 words
In a coupling assembly as defined in claim 1 wherein the base portions of the axially projecting gear teeth portions of said shaft-associated sections are also undercut.
Claim 4
Dependent Claim
15 words
In a coupling assembly as defined in claim 1 wherein said annular body is elongate.
Claim 5
Dependent Claim
29 words
In a coupling assembly as defined in claim 3 wherein said annular body is provided with circumferentially spaced slots therearound extending between said separate sets of external gear teeth.
Claim 6
Dependent Claim
15 words
In a coupling assembly as defined in claim 2 wherein said annular body is elongate.
Claim 7
Dependent Claim
29 words
In a coupling assembly as defined in claim 5 wherein said annular body is provided with circumferentially spaced slots therearound extending between said separate sets of external gear teeth.
References Cited (Backward Citations)
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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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |