US4050702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Segmented sealing structure
Assignee: BBC Brown Boveri AG Switzerland
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Filing: 1976-04-13
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Granted: 1977-09-27
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Expires: 1996-04-13
Abstract
Abstract A packing ring for use between two surfaces to be sealed relative to each other is comprised of two ring components each of which is constituted by an assembly of ring segments which are provided with a projection at one end which engages a complementarily configured recess located at one end of an adjacent ring segment thereby providing a circumferentially extending interlocking of all segments of each ring. The ring segments of one ring are circumferentially staggered relative to the segments of the other ring by half a segment pitch, and each ring segment is provided with one or more recesses such that the respective recesses in the segments of the two rings are aligned in face-to-face relation so as to form a circumferential array of slots for receiving pressure springs.
Inventors
- 👤 Antonio Del Matto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:04
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/06; F16J9/061; F16J9/063
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
125 words
A packing ring structure for sealing two surfaces relative to each other comprising a pair of adjacently positioned ring components, each of said ring components being constituted by an assembly of ring segments provided with a projection at one end engaged with a complementarily configured recess at one end of an adjacent ring segment thereby providing a circumferentially extending interlocking of all the ring segments, said ring segments of the two ring components being staggered circumferentially relative to each other and each said ring segment being provided with at least one recess, the respective recesses in the segments of the two ring components being circumferentially aligned in face-to-face relation so as to form a circumferential array of slots, and pressure springs disposed in said slots.
Claim 2
Dependent Claim
125 words
A packing ring structure for sealing two surfaces relative to each other comprising a pair of adjacently positioned ring components, each of said ring components being constituted by an assembly of ring segments provided with a projection at one end engaged with a complementarily configured recess at one end of an adjacent ring segment thereby providing a circumferentially extending interlocking of all the ring segments, said ring segments of the two ring components being staggered circumferentially relative to each other and each said ring segment being provided with at least one recess, the respective recesses in the segments of the two ring components being circumferentially aligned in face-to-face relation so as to form a circumferential array of slots, and pressure springs disposed in said slots.
Claim 3
Dependent Claim
26 words
A packing ring structure as defined in claim 1 wherein the ring segments of the two ring components are staggered circumferentially by half a segment pitch.
Claim 4
Dependent Claim
49 words
A packing ring structure as defined in claim 1 wherein said ring components have the same diameter and are placed in side-by-side relation to form a piston ring and the pressure springs exert a sealing force on the ring segments acting in the radial direction of the ring components.
Claim 5
Dependent Claim
67 words
A packing ring structure as defined in claim 1 wherein said ring components have different diameters such that the inner diameter of one ring is equal to the outer diameter of the other ring so as to fit one of the rings within the other, and the pressure springs exert a sealing force on the ring segments acting in the axial direction of the inter-fitting ring components.
Claim 6
Dependent Claim
25 words
A packing ring structure as defined in claim 1 wherein said pressure springs have a spiral configuration which exert a pressure in the radial direction.
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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) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |