US3318604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-adjusting mechanical seal with bellows control
Assignee: Borg Warner Corp
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Filing: 1964-12-31
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Granted: 1967-05-09
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Expires: 1984-12-31
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Tracy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:37
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; F16J15/363
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A SELF-ADJUSTING MECHANICAL SEAL COMPRISING: (A) A ROTARY SEALING ELEMENT; (B) A FIXED SEALING ELEMENT COMPLEMENTARY THERETO; (C) ONE OF SAID ELEMENTS HAVING A PLURALITY OF CONCENTRIC, AXIALLY MOVABLE, SEAL RINGS; (D) EACH SAID SEAL RING HAVING AN ANNULAR SEALING FACE, THE SEALING FACES OF THE RINGS BEING RADIALLY SPACED FROM EACH OTHER AND BEING DISPOSED IN ROTATABLE, SEALING RELATION TO AN OPPOSED SEALING FACE OF THE OTHER OF SAID ELEMENTS; (E) A PLURALITY OF AXIALLY EXTENDING BELLOWS MEANS DISPOSED CONCENTRICALLY WITH SAID CONCENTRIC RINGS, AT LEAST ONE OF SAID BELLOWS MEANS BEING CONCENTRIC RINGS; BETWEEN EACH ADJACENT PAIR OF SAID CONCENTRIC RINGS; (F) A CASE; (G) AT LEAST ONE OF SAID BELLOWS MEANS BEING SEALED BETWEEN A PORTION OF THE RADIALLY INNERMOST ONE OF SAID CONCENTRIC RINGS AND SAID CASE; AND (H) MEANS RESPONSIVE TO DIFFERENTIAL PRESSURES ACROSS SAID BELLOWS MEANS FOR URGING EACH OF SAID CONCENTRIC RINGS AXIALLY TOWARDS SAID OTHER SEALING MEMBER.
Claim 2
Dependent Claim
155 words
A SELF-ADJUSTING MECHANICAL SEAL COMPRISING: (A) A ROTARY SEALING ELEMENT; (B) A FIXED SEALING ELEMENT COMPLEMENTARY THERETO; (C) ONE OF SAID ELEMENTS HAVING A PLURALITY OF CONCENTRIC, AXIALLY MOVABLE, SEAL RINGS; (D) EACH SAID SEAL RING HAVING AN ANNULAR SEALING FACE, THE SEALING FACES OF THE RINGS BEING RADIALLY SPACED FROM EACH OTHER AND BEING DISPOSED IN ROTATABLE, SEALING RELATION TO AN OPPOSED SEALING FACE OF THE OTHER OF SAID ELEMENTS; (E) A PLURALITY OF AXIALLY EXTENDING BELLOWS MEANS DISPOSED CONCENTRICALLY WITH SAID CONCENTRIC RINGS, AT LEAST ONE OF SAID BELLOWS MEANS BEING CONCENTRIC RINGS; BETWEEN EACH ADJACENT PAIR OF SAID CONCENTRIC RINGS; (F) A CASE; (G) AT LEAST ONE OF SAID BELLOWS MEANS BEING SEALED BETWEEN A PORTION OF THE RADIALLY INNERMOST ONE OF SAID CONCENTRIC RINGS AND SAID CASE; AND (H) MEANS RESPONSIVE TO DIFFERENTIAL PRESSURES ACROSS SAID BELLOWS MEANS FOR URGING EACH OF SAID CONCENTRIC RINGS AXIALLY TOWARDS SAID OTHER SEALING MEMBER.
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) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |