Patent US3793893A successfully refreshed from Google Patents.
US3793893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve actuating means
Assignee: ENERFLO Inc A CORP OF
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Filing: 1972-07-10
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Granted: 1974-02-26
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Expires: 1992-07-10
Abstract
Abstract Actuating means for a valve, particularly of the plug type, which is movable between operative positions by successive modes of movement, one being axially and another rotationally, wherein a rotatably driven nut is in threaded engagement with a valve stem, a cam controlled device acting respectively at predetermined positions of the nut to permit relative movement of the nut so as to move the stem in the axial mode, and to connect the nut and stem for unitary rotation so as to move the stem in the rotational mode, guiding means being provided for the stem, so that it cannot be moved in a subsequent mode until the prior mode has first been completed.
Inventors
- 👤 I Heinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:52
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/528; F16K31/5284; F16K31/53; F16K31/54; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18024
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
141 words
Actuating means for moving a valve between operative positions by successive movements, one of which is axial and the other rotational, comprising: a. means for moving said valve, including a stem supported for axial and rotational movements, said stem having a threaded part; b. rotatable driven means having threads coacting with the threads on said stem and being operable upon relative rotation to move the stem axially; c. first means at a position axially of said stem generally adjacent to said valve for limiting the extent of axial movement of said stem, and at one limit of said axial movement enabling limited rotational movement of said stem; and d. second means at a spaced position axially of said stem, generally adjacent said rotatable means and controlled by its movement for locking said stem and rotatable means together for limited unitary rotation.
Claim 2
Dependent Claim
141 words
Actuating means for moving a valve between operative positions by successive movements, one of which is axial and the other rotational, comprising: a. means for moving said valve, including a stem supported for axial and rotational movements, said stem having a threaded part; b. rotatable driven means having threads coacting with the threads on said stem and being operable upon relative rotation to move the stem axially; c. first means at a position axially of said stem generally adjacent to said valve for limiting the extent of axial movement of said stem, and at one limit of said axial movement enabling limited rotational movement of said stem; and d. second means at a spaced position axially of said stem, generally adjacent said rotatable means and controlled by its movement for locking said stem and rotatable means together for limited unitary rotation.
Claim 3
Dependent Claim
20 words
Actuating means according to claim 1, wherein the stem carries a cross-member for indicating the operative position of the valve.
Claim 4
Dependent Claim
21 words
Actuating means according to claim 1, wherein the rotatable driven member comprises a worm gear having driving engagement with a worm.
Claim 5
Dependent Claim
76 words
Actuating means according to claim 1, wherein the first means comprises an annular wall element mounted coaxially around said stem and having an L-shaped groove positioned with one leg of the groove extending axially of the stem and the other leg extending circumferentially of the stem, and a pin element extending into said groove and being relatively movable therealong, one of said elements being affixed to and movable with said stem, and the other being fixed.
Claim 6
Dependent Claim
15 words
Actuating means according to claim 4, wherein the wall element is carried by the stem.
Claim 7
Dependent Claim
36 words
Acutating means according to claim 3, wherein the worm gear has an end hub projecting portion, and the stem carries a radially extending pin engaged by said portion at a predetermined axial position of said stem.
Claim 8
Dependent Claim
23 words
Actuating means according to claim 6, in which the projecting portion is segmental and has an end abutment shoulder engageable with said pin.
Claim 9
Dependent Claim
67 words
Actuating means according to claim 1, wherein said second means includes a peripheral recess in said stem, a radial opening in said rotatable means alignable with said recess at a predetermined position of said stem, and a roller in said radial opening movable into and out of said recess to respectively lock the rotatable means and stem for unitary movement and release the same for independent movements.
Claim 10
Dependent Claim
22 words
Actuating means according to claim 8, wherein the second means further includes camming means operable to control the movement of said roller.
Claim 11
Dependent Claim
20 words
Actuating means according to claim 9, wherein the camming means comprises a fixed ring member with a peripheral camming edge.
Claim 12
Dependent Claim
22 words
Actuating means according to claim 10, wherein the ring member is positioned radially outwardly of the associated portion of said rotatable means.
Claim 13
Dependent Claim
30 words
Actuating means according to claim 10, wherein the camming edge is formed to retain the roller in the recess of the stem during a rotational movement of substantially 90* .
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |