US3291518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Cascade Corp
•
Filing: 1964-09-14
•
Granted: 1966-12-13
•
Expires: 1984-09-14
Abstract
No abstract record available.
Inventors
- 👤 Harry F Weinert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:32
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/18; B66F9/181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A BUMP VALVE FOR CONTROLLING THE APPLICATION OF A VACUUM COMPRISING A GENERALLY SPHERICAL, HOLLOW, RESILIENT, ELASTOMER BODY, HAVING A SUPPORTING BASE PORTION WITH AN OPENING THEREIN FOR COMMUNICATION WITH A VACUUM SOURCE, SAID BODY INCLUDING MULTIPLE SIDE WALL PORTIONS SPACED FROM EACH OTHER EXTENDING AROUND THE BODY WHICH ARE CONVEXLY CURVED ON THE OUTSIDE OF THE BODY, A PLURALITY OF NORMALLY CLOSED SLITS DEFINED BETWEEN SAID SIDE WALL PORTIONS OF THE BODY EXTENDING GENERALLY PERPENDICULARLY TO SAID BASE PORTION ADAPTED TO BE OPENED UP WHEN SAID BODY IS DEFORMED, AND A COMPRESSION SPRING IN SAID BODY ARRANGED TO TENSION THE BODY IN THE DIRECTION OF SAID SLITS.
Claim 2
Dependent Claim
108 words
A BUMP VALVE FOR CONTROLLING THE APPLICATION OF A VACUUM COMPRISING A GENERALLY SPHERICAL, HOLLOW, RESILIENT, ELASTOMER BODY, HAVING A SUPPORTING BASE PORTION WITH AN OPENING THEREIN FOR COMMUNICATION WITH A VACUUM SOURCE, SAID BODY INCLUDING MULTIPLE SIDE WALL PORTIONS SPACED FROM EACH OTHER EXTENDING AROUND THE BODY WHICH ARE CONVEXLY CURVED ON THE OUTSIDE OF THE BODY, A PLURALITY OF NORMALLY CLOSED SLITS DEFINED BETWEEN SAID SIDE WALL PORTIONS OF THE BODY EXTENDING GENERALLY PERPENDICULARLY TO SAID BASE PORTION ADAPTED TO BE OPENED UP WHEN SAID BODY IS DEFORMED, AND A COMPRESSION SPRING IN SAID BODY ARRANGED TO TENSION THE BODY IN THE DIRECTION OF SAID SLITS.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |