US3719060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly elastic annular coupler element
Assignee: Lohmann and Stolterfoht GmbH
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Filing: 1971-03-11
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Granted: 1973-03-06
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Expires: 1991-03-11
Abstract
Abstract A highly elastic coupling element with inner ring, outer ring of different axial width and rubber insert; the inner ring-rubber insert interface being part conical, part cylindrical, the other interface being essentially conical at similar cone angles. Upon axial displacement of the rings for compensating shrinkage tensile stress, the profile of the insert has rectangular contour, oblique as between the two conical interface portions and integral with a hyperbolically contoured portion of the insert for providing transition between the differently wide rings.
Inventors
- 👤 D Fessel
- 👤 W Russmann
- 👤 H Schulz
- 👤 H Hiersig
- 👤 F Kinzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:16
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/76; F16F; F16F1/00; F16F1/36; F16F1/38; F16F1/393
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
98 words
A highly elastic coupling element including a first, metallic inner ring, a second, metallic outer ring, coaxially surrounding the first ring and a resilient connecting element between the first and second ring, connected thereto and respectively defining therewith first and second interfaces of bonding, the improvement comprising: the first interface of bonding being a cylindrical surface which is continued in a conical surface area of increasing radius, the second interface of bonding being at least substantially a conical surface area, the conical surfaces of the first and second interfaces having similar cone angles oriented in similar axial direction.
Claim 2
Dependent Claim
98 words
A highly elastic coupling element including a first, metallic inner ring, a second, metallic outer ring, coaxially surrounding the first ring and a resilient connecting element between the first and second ring, connected thereto and respectively defining therewith first and second interfaces of bonding, the improvement comprising: the first interface of bonding being a cylindrical surface which is continued in a conical surface area of increasing radius, the second interface of bonding being at least substantially a conical surface area, the conical surfaces of the first and second interfaces having similar cone angles oriented in similar axial direction.
Claim 3
Dependent Claim
98 words
A highly elastic coupling element including a first, metallic inner ring, a second, metallic outer ring, coaxially surrounding the first ring and a resilient connecting element between the first and second ring, connected thereto and respectively defining therewith first and second interfaces of bonding, the improvement comprising: the first interface of bonding being a cylindrical surface which is continued in a conical surface area of increasing radius, the second interface of bonding being at least substantially a conical surface area, the conical surfaces of the first and second interfaces having similar cone angles oriented in similar axial direction.
Claim 4
Dependent Claim
98 words
A highly elastic coupling element including a first, metallic inner ring, a second, metallic outer ring, coaxially surrounding the first ring and a resilient connecting element between the first and second ring, connected thereto and respectively defining therewith first and second interfaces of bonding, the improvement comprising: the first interface of bonding being a cylindrical surface which is continued in a conical surface area of increasing radius, the second interface of bonding being at least substantially a conical surface area, the conical surfaces of the first and second interfaces having similar cone angles oriented in similar axial direction.
Claim 5
Dependent Claim
23 words
Coupling element as in claim 1, the axial length of the first interface being larger than the axial length of the second interface.
Claim 6
Dependent Claim
68 words
Coupling element as in claim 2, the ring-shaped connecting element in the unbiased state (tensile strain) having cross section in an axial plane essentially in form of a parallelogram having an acute angle at largest cone circle and radius of the first interface, and with an additional area along one side of the parallelogram having a hyperbola as boundary to obtain transition as to the differing axial lengths.
Claim 7
Dependent Claim
60 words
Coupling element as in claim 3, the hyperbola being tangent to the one side of the parallelogram at point of smallest radius of the second, conical interface, the inner ring having an axial end face defining an axial plane, the hyperbola intersecting that plane at a distance from the first interface and at angle of approximately half the cone angle.
Claim 8
Dependent Claim
59 words
Coupling element as in claim 3, the profile having a second additional area on the side opposite said side of the parallelogram bounded by a line in an axial plane and by a circular arc merging with the said opposite side and intersecting that line at a point where a tangent on the circle runs parallel to the cone.
Claim 9
Dependent Claim
74 words
Coupling element as in claim 3, the cone angle and said acute angle selected so that upon an axial displacement of the first and second rings relative to each other, as the acute angle changes to a right angle, the first and second interfaces are apart (as measured transverse to either interface) by a distance smaller by 3 percent than the height of the parallelogram in the axially unbiased state of the resilient element.
Claim 10
Dependent Claim
44 words
Coupling element as in claim 3, the connecting element affixed to the first and second rings, so that upon axial displacement of the first and second rings one end face each of the rings are coplanar, when the parallelogram has changed into a rectangle.
Claim 11
Dependent Claim
53 words
Coupling element as in claim 2, the connecting element having cross section profile so that upon particular axial displacement a span from the entire, conical surface portion of the first interface, normal thereto, to the conical surface of the second interfaced is filled with material at substantially no stress normal to said surfaces.
Claim 12
Dependent Claim
122 words
Coupling element as in claim 1, the connecting element having cross-sectional profile, the area thereof outlined as follows, a first straight line as geneatrix on the cone of the first interface, a second straight line at an acute angle thereto, a circular are emerging tangentially from the second line, a relatively short third straight line transverse to the axis, a fourth straight line as geneatrix of the cone of the second interface, a hyperbola at an angle to the fourth straight line equal to the acute angle, a relatively short fifth straight line intersecting the hyperbola at an angle about 90* minus the cone angle, and a sixth straight line as geneatrix on the cylinder surface merging into the first straight line.
Claim 13
Dependent Claim
53 words
Coupling element as in claim 9, connected to a second coupling element of similar construction and connected thereto so that one pair of axial end faces of the respective first and second rings are coplanar, thereby tension biasing the respective connecting elements so that said acute angle has changed to a right angle.
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) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |