US3583712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compression ring
Assignee: Carl Freudenberg KG
•
Filing: 1969-12-17
•
Granted: 1971-06-08
•
Expires: 1989-12-17
Abstract
Abstract A sealing construction in which a sealing ring is carried by a piston spacedly surrounded by a cylinder. The sealing ring comprises portions extending outwardly from its outer peripheral surface into sealing engagement with the inner peripheral surface of the cylinder, and comprises a plurality of layers of a textile material adjacent the portions engaging the inner peripheral surface of the cylinder and out of engagement with the latter. The layers of textile material serve to increase the abrasion resistance and a better lubrication adhesion.
Inventors
- 👤 Dietrich Domros
- 👤 Wilhelm Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:00
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3284; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/936
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
92 words
A sealing construction, comprising in combination, a first member having an outer peripheral surface and a second member having an inner peripheral surface spacedly surrounding said outer peripheral surface, one of said members being reciprocable relative to the other of said members; and a sealing ring carried by one of said surfaces and having portions extending into sealing engagement with the other of said surfaces; and at least one layer of a textile material on said sealing ring adjacent said portions and normally out of engagement with the other of said surfaces.
Claim 2
Dependent Claim
92 words
A sealing construction, comprising in combination, a first member having an outer peripheral surface and a second member having an inner peripheral surface spacedly surrounding said outer peripheral surface, one of said members being reciprocable relative to the other of said members; and a sealing ring carried by one of said surfaces and having portions extending into sealing engagement with the other of said surfaces; and at least one layer of a textile material on said sealing ring adjacent said portions and normally out of engagement with the other of said surfaces.
Claim 3
Dependent Claim
64 words
A construction as defined in claim 1, wherein said first member is a piston and said second member is a cylinder with the former reciprocable relative to the latter, and wherein said sealing ring is carried by said outer peripheral surface of said piston and with said portions of said sealing ring extending into sealing engagement with said inner peripheral surface of said cylinder.
Claim 4
Dependent Claim
53 words
A construction as defined in claim 2, wherein said portions of said sealing ring constitutes a peripheral projection on said outer peripheral surface of said piston, and wherein said at least one layer of textile material constitutes said outer peripheral surface of said sealing ring adjacent said peripheral projection and adjoining the latter.
Claim 5
Dependent Claim
53 words
A construction as defined in claim 3, wherein said peripheral projection constitutes a first and second sealing lip spaced relative to each other by a peripheral groove, and wherein said at least one layer of textile material constitutes said outer peripheral surface of said sealing ring adjacent said first and second sealing lips.
Claim 6
Dependent Claim
56 words
A construction as defined in claim 4, wherein said sealing ring has opposite axial end faces bounding said outer peripheral surfaces, and wherein said at least one textile layer constitutes said outer peripheral surface adjacent said first and second sealing lips and extends along and parallel with said opposite axial end faces of said sealing ring.
Claim 7
Dependent Claim
34 words
A construction as defined in claim 5, wherein said sealing ring is annular and wherein said at least one layer of textile material constitutes 20 percent of the radial width of said sealing ring.
Claim 8
Dependent Claim
34 words
A construction as defined in claim 5, wherein said sealing ring is annular and wherein said at least one layer of textile material constitutes 25 percent of the radial width of said sealing ring.
Claim 9
Dependent Claim
29 words
A construction as defined in claim 5, wherein said sealing ring is provided with three layers of textile material superimposed on each other and bonded to said sealing ring.
Claim 10
Dependent Claim
60 words
A construction as defined in claim 2, wherein said piston has an outer peripheral surface with a peripheral groove formed in said surface, and wherein said sealing ring is seated in said peripheral groove and supported therein at opposite ends by means of rigid support rings having a substantially L-shaped cross section and made from a duroplastic or thermoplastic material.
Claim 11
Dependent Claim
15 words
A construction as defined in claim 1, wherein said sealing ring is made of rubber.
Claim 12
Dependent Claim
17 words
A construction as defined in claim 1, wherein said sealing ring is substantially rectangular in cross section.
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |