Patent US3833227A successfully refreshed from Google Patents.
US3833227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure seal
Assignee: ABB Norden Holding AB
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Filing: 1972-03-01
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Granted: 1974-09-03
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Expires: 1992-03-01
Abstract
Abstract A high pressure seal for sealing between a movable piston and the wall of a pressure chamber is formed of two rings which have oppositely sloping inward directions forming a V within which a resilient sealing strip fits. The two rings have sloping mating faces directed inwardly towards the axis of the cylinder.
Inventors
- 👤 J Nilsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:58
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/56
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
167 words
High pressure seal in a high pressure press to effect a seal between a movable piston and the wall of a pressure chamber, into which said piston is projectable, said seal comprising first and second metallic support rings between the piston and the wall of the pressure chamber, said first ring (6) abutting the piston (1) at least when the pressure chamber is under pressure, said second ring (7) abutting the wall of the pressure chamber, in which said first ring (6) has an inclined surface (9) facing the pressure chamber (2), the second ring (7) has a first inclined surface (11) facing the pressure chamber, the angle between said two surfaces being less than 180*, said second ring (7) having a second inclined surface (10) facing away from the pressure chamber and substantially parallel to the inclined surface of the first ring, said second inclined surface being a support for said first ring at least when the pressure in the pressure chamber has a low value.
Claim 2
Dependent Claim
167 words
High pressure seal in a high pressure press to effect a seal between a movable piston and the wall of a pressure chamber, into which said piston is projectable, said seal comprising first and second metallic support rings between the piston and the wall of the pressure chamber, said first ring (6) abutting the piston (1) at least when the pressure chamber is under pressure, said second ring (7) abutting the wall of the pressure chamber, in which said first ring (6) has an inclined surface (9) facing the pressure chamber (2), the second ring (7) has a first inclined surface (11) facing the pressure chamber, the angle between said two surfaces being less than 180*, said second ring (7) having a second inclined surface (10) facing away from the pressure chamber and substantially parallel to the inclined surface of the first ring, said second inclined surface being a support for said first ring at least when the pressure in the pressure chamber has a low value.
Claim 3
Dependent Claim
27 words
High pressure seal according to claim 1, said two inclined surfaces (9,11) constituting a seat and a seal ring (8) of elastomeric material engaged in said seat.
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |