US3680306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocating drives for the movable members of shut-off elements
Assignee: VYSSHEE TEKHN UCHILISCHE IM N
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Filing: 1969-11-10
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Granted: 1972-08-01
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Expires: 1989-11-10
Abstract
Abstract A reciprocating drive for the movable member of shut-off element wherein the driving element 2 made in the form of at least one wire turn heated by a source of electric current and resting on two supports 3, 4 one of which (3) is secured in the body 1 while the second one (4), connected with the movable member, moves when the driving element 2 is elongated due to heating. The second support 4 is fastened to one end of the spring-loaded part 5 whose other end is secured in the body 1. Such an installation of the second support makes it possible to increase several times the travel of the movable member as compared to the elongation of the driving element due to heating. Shown in FIG. 1 is the reciprocating drive for the movable member of shut-off element, realized in accordance with the present invention.
Inventors
- 👤 Jury Filippovich Nikitin
- 👤 Nikolai Trofimovich Romanenko
- 👤 Mikhail Trofimovich Romanenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:13
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919; G05D23/1921; F; F03; F03G; F03G7/00; F03G7/06; F03G7/061; F03G7/06114
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
160 words
A reciprocal drive for a shut-off element, said drive comprising a pressuretight and vacuumized body; a driving element in said body and including at least one wire turn extending along a longitudinal axis, and electrical supply means connected to the wire turn to heat the same; two supports for said driving element, one of which is secured in said body while the other one is free for movement when the length of said driving element changes due to heating thereof; a displaceable actuator member for said shut off member extending within said body; and means coupling the movable support with the actuator member to follow the movement of the support, the latter means comprising a spring-loaded member disposed on said body at an acute angle relative to the longitudinal axis of said driving element, means attaching one end of said spring-loaded member to said body, and means attaching said spring-loaded member to said second support remote from said one end.
Claim 2
Dependent Claim
160 words
A reciprocal drive for a shut-off element, said drive comprising a pressuretight and vacuumized body; a driving element in said body and including at least one wire turn extending along a longitudinal axis, and electrical supply means connected to the wire turn to heat the same; two supports for said driving element, one of which is secured in said body while the other one is free for movement when the length of said driving element changes due to heating thereof; a displaceable actuator member for said shut off member extending within said body; and means coupling the movable support with the actuator member to follow the movement of the support, the latter means comprising a spring-loaded member disposed on said body at an acute angle relative to the longitudinal axis of said driving element, means attaching one end of said spring-loaded member to said body, and means attaching said spring-loaded member to said second support remote from said one end.
Claim 3
Dependent Claim
24 words
A drive according to claim 1 wherein said spring-loaded member comprises a leaf spring whose one end is rigidly secured in the drive body.
Claim 4
Dependent Claim
28 words
A drive according to claim 1 wherein said wire turn of the driving element is coated with a layer of a material with a low coefficient of blackness.
Claim 5
Dependent Claim
33 words
A drive according to claim 1 wherein said spring-loaded member is in contact with the actuator member at a location remote from the location where the spring-loaded member is attached to said body.
Claim 6
Dependent Claim
20 words
A drive according to claim 1 wherein said supports are each cylindrical and said wire turn extends around the supports.
References Cited (Backward Citations)
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FR1384822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |