US3360185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum pump control
Assignee: Unisys Corp
•
Filing: 1965-04-23
•
Granted: 1967-12-26
•
Expires: 1985-04-23
Abstract
No abstract record available.
Inventors
- 👤 Robert S Wooldridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:36
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/56; G11B15/58; G05; G05D; G05D16/00; G05D16/20; G05D16/2006; G05D16/2066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN COMBINATION, A TAPE LOOP CONTROL BOX, A TAPE LOOP FORMED IN SAID CONTROL BOX SO THAT ONE SURFACE OF SAID TAPE LOOP IS EXPOSED TO THE ATMOSPHERE AND THE OTHER SURFACE THEREOF FORMS A VACCUM CHAMBER WITH SAID CONTROL BOX, MEANS FOR REGULATING THE VACUUM IN THE VACUUM CHAMBER OF SAID BOX COMPRISING VACUUM PRODUCING MEANS FOR PRODUCING VACUUM IN SAID BOX, CONTROL MEANS FOR CONTROLLING THE OPERATION OF SAID VACUUM PRODUCING MEANS TO CONTROL THE AMOUNT OF VACUUM IN SAID BOX, AND SWITCHING MEANS RESPONSIVE TO THE VACUUM IN SAID BOX TO ACTUATE SAID CONTROL, MEANS COMMUNICATING WITH BOTH THE SWITCHING MEANS AND THE CONTROL BOX FOR ADJUSTING THE VACCUM APPLIED TO SAID SWITCHING MEANS TO MAINTAIN A DESIRED VACUUM IN SAID LOOP BOX.
Claim 2
Dependent Claim
126 words
IN COMBINATION, A TAPE LOOP CONTROL BOX, A TAPE LOOP FORMED IN SAID CONTROL BOX SO THAT ONE SURFACE OF SAID TAPE LOOP IS EXPOSED TO THE ATMOSPHERE AND THE OTHER SURFACE THEREOF FORMS A VACCUM CHAMBER WITH SAID CONTROL BOX, MEANS FOR REGULATING THE VACUUM IN THE VACUUM CHAMBER OF SAID BOX COMPRISING VACUUM PRODUCING MEANS FOR PRODUCING VACUUM IN SAID BOX, CONTROL MEANS FOR CONTROLLING THE OPERATION OF SAID VACUUM PRODUCING MEANS TO CONTROL THE AMOUNT OF VACUUM IN SAID BOX, AND SWITCHING MEANS RESPONSIVE TO THE VACUUM IN SAID BOX TO ACTUATE SAID CONTROL, MEANS COMMUNICATING WITH BOTH THE SWITCHING MEANS AND THE CONTROL BOX FOR ADJUSTING THE VACCUM APPLIED TO SAID SWITCHING MEANS TO MAINTAIN A DESIRED VACUUM IN SAID LOOP BOX.
References Cited (Backward Citations)
US440375A
Cited
US1132777A
Cited
US862696A
Cited
US1073276A
Cited
US1347194A
Cited
US3151796A
Cited
US3156423A
Cited
US3258183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |