US3339930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axially staged self-adjusting mechanical seal
Assignee: Borg Warner Corp
•
Filing: 1965-03-18
•
Granted: 1967-09-05
•
Expires: 1985-03-18
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Tracy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:07
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38; F16J15/3436; F16J15/346; Y; Y10; Y10S; Y10S277/00; Y10S277/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
SEALING MEANS FOR A SHAFT OPENING IN A HOUSING CONTIANING FLUID UNDER PRESSURE AND HAVING A ROTATABLE SHAFT EXTENDING THERETHROUGH, COMPRISING: A PLURALITY OF AXIALLY ALIGNED STUFFING BOXES ABOUT SAID SHAFT OPENING AND SURROUNDING SAID SHAFT; MEANS FOR FLUID PRESSURE COMMUNICATION BETWEEN SAID STUFFING BOXES; MECHANICAL FLUID PRESSURE RESPONSIVE SEALING MEANS IN EACH OF SAID STUFFING BOXES; AND MEANS AUTOMOTICALLY ADJUSTING EACH MECHANICAL SEALING MEANS RESPONSIVE TO FLUID PRESSURES EXISTING IN ALL OF SAID STUFFING BOXES, WHEREBY EACH MECHANICAL SEALING MEANS BEARS A PROPORTIONATE SHARE OF THE PRESSURE IN SAID HOUSING REGARDLESS OF THE VARIATIONS THEREOF.
Claim 2
Dependent Claim
96 words
SEALING MEANS FOR A SHAFT OPENING IN A HOUSING CONTIANING FLUID UNDER PRESSURE AND HAVING A ROTATABLE SHAFT EXTENDING THERETHROUGH, COMPRISING: A PLURALITY OF AXIALLY ALIGNED STUFFING BOXES ABOUT SAID SHAFT OPENING AND SURROUNDING SAID SHAFT; MEANS FOR FLUID PRESSURE COMMUNICATION BETWEEN SAID STUFFING BOXES; MECHANICAL FLUID PRESSURE RESPONSIVE SEALING MEANS IN EACH OF SAID STUFFING BOXES; AND MEANS AUTOMOTICALLY ADJUSTING EACH MECHANICAL SEALING MEANS RESPONSIVE TO FLUID PRESSURES EXISTING IN ALL OF SAID STUFFING BOXES, WHEREBY EACH MECHANICAL SEALING MEANS BEARS A PROPORTIONATE SHARE OF THE PRESSURE IN SAID HOUSING REGARDLESS OF THE VARIATIONS THEREOF.
References Cited (Backward Citations)
CA550642A
Cited
US2383862A
Cited
US2723868A
Cited
US3042414A
Cited
US3031197A
Cited
US3233824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |