Patent US3295191A successfully refreshed from Google Patents.
US3295191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of constructing a bellows valve
Assignee: Nupro Co
•
Filing: 1964-04-13
•
Granted: 1967-01-03
•
Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Bernard J Gallagher
- 👤 Jr Francis J Callahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:01
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49421
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A METHOD OF CONSTRUCTING A BELLOWS VALVE INCLUDING THE STEPS OF PROVIDING A BASE PORTION HAVING A COUNTERBORED PORTION, PROVIDING A BONNET PORTION HAVING A CENTRAL BORE THERETHROUGH AND A SHOULDER IN SAID BORE, TELESCOPINGLY INSERTING AN OPEN ENDED BELLOWS HAVING AN AXIALLY EXTENDING END PORTION THEREON IN SAID BORE, ORIENTING SAID BELLOWS SO THAT SAID END PORTION IS POSITIONED WITHIN SAID SHOULDER, FUSION BONDING SAID BELLOWS TO SAID SHOULDER, PARTIALLY INSERTING A STEM AXIALLY THROUGH SAID BELLOWS AND THEREAFTER PLACING A RING ON THE EXPOSED END OF SAID STEM, MAINTAINING SAID RING IN PLACE AND FUSION BONDING SAID RING TO SAID STEM AND SAID BELLOWS, SEATING SAID BONNET IN SAID COUNTERBORED BASE PORTION, SWAGING
Claim 2
Independent Claim
115 words
A METHOD OF CONSTRUCTING A BELLOWS VALVE INCLUDING THE STEPS OF PROVIDING A BASE PORTION HAVING A COUNTERBORED PORTION, PROVIDING A BONNET PORTION HAVING A CENTRAL BORE THERETHROUGH AND A SHOULDER IN SAID BORE, TELESCOPINGLY INSERTING AN OPEN ENDED BELLOWS HAVING AN AXIALLY EXTENDING END PORTION THEREON IN SAID BORE, ORIENTING SAID BELLOWS SO THAT SAID END PORTION IS POSITIONED WITHIN SAID SHOULDER, FUSION BONDING SAID BELLOWS TO SAID SHOULDER, PARTIALLY INSERTING A STEM AXIALLY THROUGH SAID BELLOWS AND THEREAFTER PLACING A RING ON THE EXPOSED END OF SAID STEM, MAINTAINING SAID RING IN PLACE AND FUSION BONDING SAID RING TO SAID STEM AND SAID BELLOWS, SEATING SAID BONNET IN SAID COUNTERBORED BASE PORTION, SWAGING
References Cited (Backward Citations)
US1972815A
Cited
US2308183A
Cited
US2957236A
Cited
US2880620A
Cited
GB845239A
Cited
US3206165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |