US3681939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic shaft coupling with metallic elements
Assignee: Individual
•
Filing: 1971-03-05
•
Granted: 1972-08-08
•
Expires: 1991-03-05
Abstract
Abstract The invention relates to an elastic shaft coupling with elastic metallic elements disposed between the driving cams of the coupling members.
Inventors
- 👤 Karlheinz Timtner
- 👤 Albrecht Maurer
- 👤 Ruprecht Maurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:04
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/64; F16D3/66
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
102 words
An elastic shaft coupling having elastic metallic elements disposed between the driving cams of the coupling members, characterized by the fact that the elastic elements consist of basically square, cylindrically curved leaf springs (1, 2) whose axis of curvature runs parallel to the axis of the shaft coupling, the said leaf springs alternately abutting against one another with their convex surfaces (4,5) and their edges (13,14) which run parallel to the axis of the shaft coupling, the leaf springs, when pressed flat, abutting against one another along almost their entire surface and experiencing the maximum permissible bending stress on the cylindrical surfaces.
Claim 2
Dependent Claim
102 words
An elastic shaft coupling having elastic metallic elements disposed between the driving cams of the coupling members, characterized by the fact that the elastic elements consist of basically square, cylindrically curved leaf springs (1, 2) whose axis of curvature runs parallel to the axis of the shaft coupling, the said leaf springs alternately abutting against one another with their convex surfaces (4,5) and their edges (13,14) which run parallel to the axis of the shaft coupling, the leaf springs, when pressed flat, abutting against one another along almost their entire surface and experiencing the maximum permissible bending stress on the cylindrical surfaces.
Claim 3
Dependent Claim
43 words
A shaft coupling according to claim 1 characterized by the fact that the height of camber of the cylindrically curved leaf spring comprises up to one-fifth of the length of the leaf spring measured in the direction of the circumference of the cylinder.
Claim 4
Dependent Claim
42 words
A shaft coupling according to claim 1 characterized by the fact that in each intervening space between the driving cams (15, 16) of the coupling members (7,8) a plurality of leaf springs is combined into leaf spring packages (9, 10, 11, 12).
Claim 5
Dependent Claim
64 words
A shaft coupling according to claim 3 characterized by the fact tHat viewed in the direction of the circumference the driving cams are connected alternately with the one member of the coupling and with the other member of the coupling, and that the packages of leaf springs disposed between the driving cams are prestressed by at least one half of their total spring deflection.
Claim 6
Dependent Claim
65 words
A shaft coupling according to claim 1 characterized by the fact that on one of the edges which runs parallel to the axis of the shaft coupling the leaf springs are provided with recesses (17) and on the other edge toward the concave side are provided with crimped noses (18) which engage the recesses when the leaf springs are combined into packages of leaf springs.
Claim 7
Dependent Claim
51 words
A shaft coupling according to claim 1 characterized by the fact that on their edges (19) which are at right angles to the axis of the shaft coupling the leaf springs are provided with noses (20) which are guided in suitably shaped grooves (21) in one of the two coupling members.
Claim 8
Dependent Claim
74 words
A shaft coupling according to claim 4 characterized by the fact that in each package of leaf springs one or more sets of thinner leaf springs (22) is installed which is prestressed in the unloaded state of the coupling and which is relieved in those packages of leaf springs which are relieved when the coupling is acted upon, so that the active, thicker sets (1,2) of leaf springs will be prevented from falling over.
Claim 9
Dependent Claim
51 words
A shaft coupling according to claim 1 characterized by the fact that a set of leaf springs which consists of at least two leaf springs (1,2) which curve in opposite directions also contains additional pairs (1'' , 2'' , 1'''' , 2'''' ) of leaf springs which curve in opposite directions.
Claim 10
Dependent Claim
61 words
A shaft coupling according to claim 1 characterized by the fact that the elastic leaf springs (1,2) are always disposed between two driving cams (15,15) of the one coupling member (8) and simultaneously between two driving cams (16,16) of the other coupling member (7), the driving cams (15,16) being so designed that they run past one another without touching one another.
Claim 11
Dependent Claim
49 words
A shaft coupling according to claim 9 characterized by the fact that the driving cam of the one coupling member is divided in forked manner and that the associated driving cam of the other coupling member moves without making contact through the free space formed by the forked construction.
Claim 12
Dependent Claim
38 words
A shaft coupling according to claim 9 characterized by the fact that the stop faces of the driving cams which abut against the elastic leaf springs are shaped to conform to the outline of the said leaf springs.
Claim 13
Dependent Claim
41 words
A shaft coupling according to claim 9 characterized by the fact that the coupling member surfaces which come in contact with the elastic leaf springs are protected by a wear plate (23)- more particularly, by an insert of tempered sheet steel.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |