Patent US3575428A successfully refreshed from Google Patents.
US3575428A
Expired / Lapsed
US
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Sealing arrangement
Assignee: TEUCHER SIEGFRED DR
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Filing: 1969-06-13
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Granted: 1971-04-20
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Expires: 1989-06-13
Abstract
Abstract A sealing element composed of a body of resiliently deformable material, a helical coil spring disposed along one edge of the body and arranged to be laterally deformable, and a sheath having a C-shaped cross section and enclosing at least one-half of the coil circumference of the spring.
Inventors
- 👤 Ernst Fuhrmann
- 👤 Siegfried Teucher
- 👤 Fritz Bondroit
- 👤 Friedhelm Stecher
- 👤 Paul Vossieck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:42
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/12; F16J15/121; F16J15/122; F16J15/123
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
A gasket for providing a sealing joint between two members, comprising, in combination: a. sealing element constituted by a body of resiliently deformable material; b. a helical coil spring disposed along one edge of said body and having a plurality of coils adjacent one another, with one lateral dimension of each said coil extending parallel to the thickness dimension of said body; and c. a sheath surrounding said spring and enclosing at least onehalf of the coil circumference thereof, said sheath being made of a deformable material and having a C-shaped cross section.
Claim 2
Dependent Claim
93 words
A gasket for providing a sealing joint between two members, comprising, in combination: a. sealing element constituted by a body of resiliently deformable material; b. a helical coil spring disposed along one edge of said body and having a plurality of coils adjacent one another, with one lateral dimension of each said coil extending parallel to the thickness dimension of said body; and c. a sheath surrounding said spring and enclosing at least onehalf of the coil circumference thereof, said sheath being made of a deformable material and having a C-shaped cross section.
Claim 3
Dependent Claim
90 words
An arrangement as defined in claim 1 wherein said helical spring is given a permanent preliminary deformation for giving each of said coils the form of an ellipse whose minor axis is parallel to the thickness dimension of said body, the amount of such preliminary deformation being such that any further lateral deformation of said coils will lie along the flattest portion of a curve representing the sealing force applied by said coils as a function of the amount of lateral deformation thereof in the direction of such sealing force.
Claim 4
Dependent Claim
36 words
An arrangement as defined in claim 2 wherein said coils are preliminarily deformed by an amount such that the sealing surfaces defined by said sheath are coplanar with the sealing surfaces defined by said sealing element.
References Cited (Backward Citations)
US3346266A
Cited
US3433490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |