US3092765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control mechanism
Assignee: Phillips Petroleum Co
•
Filing: 1961-06-19
•
Granted: 1963-06-04
•
Expires: 1981-06-19
Abstract
No abstract record available.
Inventors
- 👤 Daniel M Vesper
- 👤 Mark E Larkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:21
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/425
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
CONTROL APPARATUS COMPRISING A SIGNAL TRANSMITTER HAVING AN ADJUSTABLE SET POINT, A REVERSIBLE MOTOR HAVING A DRIVE SHAFT, MEANS CONNECTING SAID DRIVE SHAFT TO SAID SET POINT TO ADJUST SAME, A FIRST PRESSURE RESPONSIVE SWITCH WHICH IS ACTUATED WHEN THE PRESSURE APPLIED THERETO EXCEEDS A FIRST PRESELECTED VALUE, A SECOND PRESSURE RESPONSIVE SWITCH WHICH IS ACTUATED WHEN THE PRESSURE APPLIED THERETO BECOMES LESS THAN A SECOND PRESELECTED VALUE WHICH IS LESS THAN SAID FIRST PRESELECTED VALUE, MEANS TO APPLY A COMMON PRESSURE TO SAID FIRT AND SECOND SWITCHES, MEANS RESPONSIVE TO SAID FIRST SWITCH BEING ACTUATED TO ENERGIZE SAID MOTOR FOR ROTATION IN A FIRST DIRECTION, AND MEANS RESPONSIVE TO SAID SECOND SWITCH BEING ACTUATED TO ENERGIZE SAID MOTOR FOR ROTATION IN A SECOND DIRECTION.
Claim 2
Dependent Claim
125 words
CONTROL APPARATUS COMPRISING A SIGNAL TRANSMITTER HAVING AN ADJUSTABLE SET POINT, A REVERSIBLE MOTOR HAVING A DRIVE SHAFT, MEANS CONNECTING SAID DRIVE SHAFT TO SAID SET POINT TO ADJUST SAME, A FIRST PRESSURE RESPONSIVE SWITCH WHICH IS ACTUATED WHEN THE PRESSURE APPLIED THERETO EXCEEDS A FIRST PRESELECTED VALUE, A SECOND PRESSURE RESPONSIVE SWITCH WHICH IS ACTUATED WHEN THE PRESSURE APPLIED THERETO BECOMES LESS THAN A SECOND PRESELECTED VALUE WHICH IS LESS THAN SAID FIRST PRESELECTED VALUE, MEANS TO APPLY A COMMON PRESSURE TO SAID FIRT AND SECOND SWITCHES, MEANS RESPONSIVE TO SAID FIRST SWITCH BEING ACTUATED TO ENERGIZE SAID MOTOR FOR ROTATION IN A FIRST DIRECTION, AND MEANS RESPONSIVE TO SAID SECOND SWITCH BEING ACTUATED TO ENERGIZE SAID MOTOR FOR ROTATION IN A SECOND DIRECTION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |