Patent US3596787A successfully refreshed from Google Patents.
Patent US3197141A successfully refreshed from Google Patents.
US3197141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam trap
Assignee: WH Nicholson and Co
•
Filing: 1963-08-19
•
Granted: 1965-07-27
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Expires: 1983-08-19
Abstract
No abstract record available.
Inventors
- 👤 Harold L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:06
CPC Classifications
F; F16; F16T; F16T1/00; F16T1/02; F16T1/10; Y; Y10; Y10S; Y10S148/00; Y10S148/072
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
A STEAM TRAP HAVING A CASING, A CASING COVER, A THERMOSTATIC ELEMENT SUSPENDED FROM THE COVER, A SHIELD AROUND THE SIDES OF THE THERMOSTATIC ELEMENT, A DISCHARGE VALVE CARRIED ON THE LOWER END OF THE THERMOSTATIC ELEMENT, A VALVE SEAT FOR SAID VALVE IN A LOWER POSITION OF THE CASING, AND AN INLET IN THE CASING FOR STEAM AND CONDENSATE AT A HIGH ENOUGH LEVEL TO PROVIDE A STRAIGHT LINE GRAVITY FLOW FROM THE INLET TO THE SEAT, IN THE ABSENCE OF A BAFFLE, IN COMBINATION WITH A SOLID BAFFLE BETWEEN THE INLET AND VALVE SEAT, SAID BAFFLE EXTENDING UPWARD TO THE POINT SPACED BELOW THE SHIELD BUT ABOVE THE INLET, BUT ONLY PART WAY AROUND THE VALVE SEAT SO AS TO DEFLECT ALL THE STEAM AWAY FROM THE STRAIGHT LINE FLOW UPWARD TOWARD THE THERMAL ELEMENT AND LATERALLY AROUND THE INNER PERIPHERY OF THE TRAP BODY, WHILE PERMITTING CONDENSATE TO ESCAPE; WHEREBY THE THERMAL EFFICIENCY OF THE TRAP IS INCREASED BY PREVENTING THE ESCAPE OF LIVE STEAM BEFORE THE VALVE CLOSES, AND THE ABILITY OF THE TRAP TO DRAIN ITSELF WHEN THE STREAM IS SHUT OFF, IS IMPROVED.
Claim 2
Dependent Claim
189 words
A STEAM TRAP HAVING A CASING, A CASING COVER, A THERMOSTATIC ELEMENT SUSPENDED FROM THE COVER, A SHIELD AROUND THE SIDES OF THE THERMOSTATIC ELEMENT, A DISCHARGE VALVE CARRIED ON THE LOWER END OF THE THERMOSTATIC ELEMENT, A VALVE SEAT FOR SAID VALVE IN A LOWER POSITION OF THE CASING, AND AN INLET IN THE CASING FOR STEAM AND CONDENSATE AT A HIGH ENOUGH LEVEL TO PROVIDE A STRAIGHT LINE GRAVITY FLOW FROM THE INLET TO THE SEAT, IN THE ABSENCE OF A BAFFLE, IN COMBINATION WITH A SOLID BAFFLE BETWEEN THE INLET AND VALVE SEAT, SAID BAFFLE EXTENDING UPWARD TO THE POINT SPACED BELOW THE SHIELD BUT ABOVE THE INLET, BUT ONLY PART WAY AROUND THE VALVE SEAT SO AS TO DEFLECT ALL THE STEAM AWAY FROM THE STRAIGHT LINE FLOW UPWARD TOWARD THE THERMAL ELEMENT AND LATERALLY AROUND THE INNER PERIPHERY OF THE TRAP BODY, WHILE PERMITTING CONDENSATE TO ESCAPE; WHEREBY THE THERMAL EFFICIENCY OF THE TRAP IS INCREASED BY PREVENTING THE ESCAPE OF LIVE STEAM BEFORE THE VALVE CLOSES, AND THE ABILITY OF THE TRAP TO DRAIN ITSELF WHEN THE STREAM IS SHUT OFF, IS IMPROVED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |