US3672262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve operator apparatus
Assignee: Individual
•
Filing: 1970-05-04
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Granted: 1972-06-27
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Expires: 1990-05-04
Abstract
Abstract A pressure responsive valve operator which rotates a valve stem and which includes a piston connected with a piston rod. The piston rod carries a pin at its free end which is connected to a pair of yoke members on opposite sides of the piston rod. The connection is made by the use of sliding blocks in slots in the yoke members. Lateral forces on the piston rod are avoided by extending the ends of the connective pin into slots of a surrounding housing, there being sliding blocks in those slots which take up the lateral forces on the piston rod. The avoidance of lateral loading on the piston rod materially reduces the expense of the equipment in the elimination of oil seals, bearings, and the like.
Inventors
- 👤 Michael A Karr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:59
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/02; F15B15/06; F15B15/066; F16; F16K; F16K31/00; F16K31/12; F16K31/16; F16K31/163; F16K31/1635; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/18936
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
189 words
A valve operator which comprises: a cylinder, a piston within said cylinder, a piston rod connected to said piston for movement in response to fluid pressure applied to said piston, a housing comprised of at least a pair of spaced walls and being rigidly fixed with respect to the cylinder and through which said piston rod moves, slot means formed in two of said walls of said housing, said slot means being parallel to one another and to the path of movement of said piston rod and having a length at least equal to the desired stroke of said piston, a coupling member adapted to be connected to a valve stem, a wrist pin mounted for rotation about its axis and joined to said coupling member, a projecting yoke member joined to said wrist pin, said yoke member having a slot therein, a pillow block slidably received in said slot, and a connective pin joined to the free end of said piston rod and to said pillow block, said pin moving linerally with said piston rod while causing said yoke member to rotate said wrist pin and coupling member.
Claim 2
Dependent Claim
189 words
A valve operator which comprises: a cylinder, a piston within said cylinder, a piston rod connected to said piston for movement in response to fluid pressure applied to said piston, a housing comprised of at least a pair of spaced walls and being rigidly fixed with respect to the cylinder and through which said piston rod moves, slot means formed in two of said walls of said housing, said slot means being parallel to one another and to the path of movement of said piston rod and having a length at least equal to the desired stroke of said piston, a coupling member adapted to be connected to a valve stem, a wrist pin mounted for rotation about its axis and joined to said coupling member, a projecting yoke member joined to said wrist pin, said yoke member having a slot therein, a pillow block slidably received in said slot, and a connective pin joined to the free end of said piston rod and to said pillow block, said pin moving linerally with said piston rod while causing said yoke member to rotate said wrist pin and coupling member.
Claim 3
Dependent Claim
27 words
A valve operator according to claim 1 wherein a pair of pillow blocks are slidingly received within said slot means and are connected to said connective pin.
Claim 4
Dependent Claim
45 words
A valve operator according to claim 1 wherein a pair of projecting yoke members are joined to said wrist pin, each having a slot therein and a pillow block received in said slots and positioneD on opposite sides of said piston rod from one another.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |