US3376794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure device
Assignee: CUSTOM COMPONENT SWITCHES Inc
•
Filing: 1965-05-17
•
Granted: 1968-04-09
•
Expires: 1985-05-17
Abstract
No abstract record available.
Inventors
- 👤 Griffith Donald Lee
- 👤 Williams Starr King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:36
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/34; F; F15; F15B; F15B5/00; H01H35/26; H01H35/2607
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
140 words
A FLUID PRESSURE DEVICE COMPRISING: DISC SPRING MEANS HAVING A CHARACTERISTIC SURFACE CONTOUR AND SPRING RATE, SAID DISC SPRING MEANS FURTHER HAVING A CENTRAL PRESSURE PLATE MEANS; A FIRST DIAPHRAGM MEANS IN INTIMATE CONTACT WITH SAID DISC SPRING MEANS, SAD FIRST DIAPHRAGM MEANS HAVING AN EFFECTIVE AREA SUBSTANTIALLY EQUAL TO THAT OF SAID DISC SPRING MEANS, SAID FIRST DIAPHRAGM MEANS FURTHER HAVING A SPRING RATE SUBSTANTIALLY LESS THAN THAT OF SAID DISC SPRING MEANS; A SECOND DIAPHRAGM MEANS IN INTIMATE CONTACT WITH SAID FIRST DIAPHRAGM MEANS AND HAVING A SUBSTANTIALLY EQUAL EFFECTIVE AREA, SAID SECOND DIAPHRAGM MEANS FURTHER HAVING THE CHARACTERISTICS OF A LIMP DIAPHRAGM; A SOLID BODY HAVING A SUPPORT SURFACE IN INTIMATE CONTACT WITH SAID SECOND DIAPHRAGM MEANS OVER A PORTION THEREOF; FIRST FLUID INTRODUCTION MEANS FOR INTRODUCING FLUID BETWEEN SAID FIRST AND SECOND DIAPHRAGM MEANS TO EF-
References Cited (Backward Citations)
US2704551A
Cited
US1703531A
Cited
US1910322A
Cited
US2936785A
Cited
US3267819A
Cited
US3208264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |