US3394733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airless water pressure system
Assignee: Jacuzzi Brothers Inc
•
Filing: 1965-01-27
•
Granted: 1968-07-30
•
Expires: 1985-01-27
Abstract
No abstract record available.
Inventors
- 👤 Jacuzzi Candido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:46
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/02; F04B49/022; E; E03; E03B; E03B5/00; F04B11/00; F04B11/0008; F04B11/0033; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86035; Y10T137/86043
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
A DEVICE FOR HOLDING LIQUID UNDER PRESSURE FOR USE DURING QUIESCENT PERIODS OF A PUMP, IN A PRESSURE SYSTEM HAVING A PRE-ESTABLISHED PRESSURE OPERATING RANGE, COMPRISING AN EXPANSIBLE TUBE ADAPTED, IN RESPONSE TO INTERNAL PRESSURE, TO BEGIN SUBSTANTIAL EXPANSION AT SUBSTANTIALLY THE LOWER OPERATING PRESSURE OF SAID PRESSURE RANGE, SAID TUBE BEING OF A SIZE AND THICKNESS OF MATERIAL ENABLING SAME TO REACH THE MAXIMUM VALUE OF SAID PRESSURE RANGE, WITH AN INCREASE IN CAPACITY OF THE ORDER OF A GALLON OR MORE, AND MEANS FOR FLOW COUPLING SAME INTO SUCH PRESSURE SYSTEM.
References Cited (Backward Citations)
US1149896A
Cited
US2156296A
Cited
US2278688A
Cited
US2495693A
Cited
FR1085114A
Cited
US2808070A
Cited
US2828771A
Cited
US3017057A
Cited
US2949932A
Cited
GB911265A
Cited
GB923010A
Cited
US3276477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |