Patent US3129886A successfully refreshed from Google Patents.
US3129886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic air flow control device
Assignee: Robertshaw US Holding Corp
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Filing: 1962-06-11
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Granted: 1964-04-21
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Expires: 1982-06-11
Abstract
No abstract record available.
Inventors
- 👤 Liebermann John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:25
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/044; F24F3/048; F24F3/052; F24F3/0522; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/76; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
A DEVICE FOR CONTROLLING FLOW OF TEMPERING AIR IN ACCORDANCE WITH TEMPERATURES IN A SPACE TO BE TEMPERED, SAID DEVICE COMPRISING: (A) A HOUSING HAVING SIDE WALLS, (B) A LEVER PIVOTED BETWEEN SAID SIDE WALLS FOR MOVEMENT ABOUT A FIRST AXIS, SAID LEVER HAVING A FREE END, (C) A THERMALLY EXPANSIBLE POWER ELEMENT MOUNTED ON SAID HOUSING AND ENGAGEABLE BY SAID LEVER, (D) A FIRST SPRING URGING SAID LEVER ABOUT SAID FIRST AXIS FOR FOLLOWING ENGAGEMENT WITH SAID POWER ELEMENT, (E) AN ARM EXTENDING FROM SAID HOUSING AND HAVING ONE END PIVOTED BETWEEN SAID WALLS FOR MOVEMENT OF SAID ARM ABOUT A SECOND AXIS, ONE END OF SAID ARM BEING ENGAGEABLE WITH SAID FREE END OF SAID LEVER, (F) AN AIR BAFFLE MOUNTED AT THE OTHER END OF SAID ARM FOR MOVEMENT THEREWITH, (G) A SECOND SPRING URGING SAID ARM ABOUT SAID SECOND AXIS FOR FOLLOWING ENGAGEMENT WITH SAID FREE END OF SAID LEVER, (H) SAID LEVER BEING MOVABLE AWAY FROM SAID ARM BY BY SAID POWER ELEMENT WHEN SAID BAFFLE IS RESTRAINED AGAINST MOVEMENT IN ONE DIRECTION, AND SAID POWER ELEMENT BEING MOVABLE AWAY FROM SAID LEVER WHEN SAID BAFFLE IS RESTRAINED AGAINST MOVEMENT IN THE OPPOSITE DIRECTION.
Claim 2
Independent Claim
199 words
A DEVICE FOR CONTROLLING FLOW OF TEMPERING AIR IN ACCORDANCE WITH TEMPERATURES IN A SPACE TO BE TEMPERED, SAID DEVICE COMPRISING: (A) A HOUSING HAVING SIDE WALLS, (B) A LEVER PIVOTED BETWEEN SAID SIDE WALLS FOR MOVEMENT ABOUT A FIRST AXIS, SAID LEVER HAVING A FREE END, (C) A THERMALLY EXPANSIBLE POWER ELEMENT MOUNTED ON SAID HOUSING AND ENGAGEABLE BY SAID LEVER, (D) A FIRST SPRING URGING SAID LEVER ABOUT SAID FIRST AXIS FOR FOLLOWING ENGAGEMENT WITH SAID POWER ELEMENT, (E) AN ARM EXTENDING FROM SAID HOUSING AND HAVING ONE END PIVOTED BETWEEN SAID WALLS FOR MOVEMENT OF SAID ARM ABOUT A SECOND AXIS, ONE END OF SAID ARM BEING ENGAGEABLE WITH SAID FREE END OF SAID LEVER, (F) AN AIR BAFFLE MOUNTED AT THE OTHER END OF SAID ARM FOR MOVEMENT THEREWITH, (G) A SECOND SPRING URGING SAID ARM ABOUT SAID SECOND AXIS FOR FOLLOWING ENGAGEMENT WITH SAID FREE END OF SAID LEVER, (H) SAID LEVER BEING MOVABLE AWAY FROM SAID ARM BY BY SAID POWER ELEMENT WHEN SAID BAFFLE IS RESTRAINED AGAINST MOVEMENT IN ONE DIRECTION, AND SAID POWER ELEMENT BEING MOVABLE AWAY FROM SAID LEVER WHEN SAID BAFFLE IS RESTRAINED AGAINST MOVEMENT IN THE OPPOSITE DIRECTION.
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |