US3340893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Throttle
Assignee: Heald Machine Co
•
Filing: 1964-11-20
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Granted: 1967-09-12
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Expires: 1984-11-20
Abstract
No abstract record available.
Inventors
- 👤 George H Lockwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:21
CPC Classifications
F; F16; F16K; F16K47/00; F16K47/04; F15; F15B; F15B11/00; F15B11/02; F15B11/04; F15B21/00; F15B21/04; F15B21/045; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/07; G; G05; G05D; G05D7/00; G05D7/01; G05D7/0146; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7737
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A THROTTLE, COMPRISING (A) A MAIN BODY HAVING A PASSAGE, (B) A REGULATING MEMBER IN THE PASSAGE DEFINING A FLOW SPACE BETWEEN THE SURFACE OF THE PASSAGE AND THE SURFACE OF THE REGULATING MEMBER, THE MAIN BODY AND THE REGULATING MEMBER BEING FORMED OF MATERIALS HAVING SUBSTANTIALLY DIFFERENT CO-EFFICIENTS OF THERMAL EXPANSION, SUCH THAT THE CHANGE IN CROSS-SECTIONAL AREA OF THE SAID SPACE WITH A GIVEN CHANGE OF TEMPERATURE OF THE FLUID IS SUFFICIENT TO COMPENSATE FOR THE
Claim 2
Dependent Claim
78 words
A THROTTLE, COMPRISING (A) A MAIN BODY HAVING A PASSAGE, (B) A REGULATING MEMBER IN THE PASSAGE DEFINING A FLOW SPACE BETWEEN THE SURFACE OF THE PASSAGE AND THE SURFACE OF THE REGULATING MEMBER, THE MAIN BODY AND THE REGULATING MEMBER BEING FORMED OF MATERIALS HAVING SUBSTANTIALLY DIFFERENT CO-EFFICIENTS OF THERMAL EXPANSION, SUCH THAT THE CHANGE IN CROSS-SECTIONAL AREA OF THE SAID SPACE WITH A GIVEN CHANGE OF TEMPERATURE OF THE FLUID IS SUFFICIENT TO COMPENSATE FOR THE
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |