Linear retractable seal valve

Details Linear retractable seal valve Linear retractable seal valve

1978-04-05

1979-08-21

Weakley, Harold W.

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

251197, 251199, F16K 2500

Patent

active

041650638

ABSTRACT:
A linear retractable seal valve having a wedge sealing-slip assembly slideably held at opposite side edges of the wedge to guide rails of the valve body and moveable from a distant first location to a second location between inlet and outlet ports of the valve from which latter location the sealing slips are wedged outwardly of the longitudinal movement of the assembly into closure engagement with the valve ports, with the valve being returned to its open position through a reverse sequential movement wherein there is first a perpendicular movement of the slips out of closure engagement with the valve ports, following which there is a reverse longitudinal movement of the wedge-slip assembly away from the fluid passageway to its valve open first location.
Each of the slips has on its inside face spaced lugs adjacent its side edges which lugs extend in a perpendicular direction of the longitudinal movement of the assembly with the lugs of one slip overlying those of the other and with a roller resting on the upper surface of each of the upper-most lugs. Each roller in one of its two positions occupies a locking notch in the associated edge of the wedge and in cooperation with the longitudinal edge of the adjacent rail locks the slips to the wedge, thus forestalling perpendicular outward movement of the slips during longitudinal moving of the assembly between its first and second locations. The respective rollers at the second location of the assembly move out of the associated locking notch of the wedge and into a second roller position where it engages a ramp provided by the terminated end of the adjacent rail. In this second position the rollers preclude upward movement of the slips during the initial opening phase of the valve until after the slips have moved out of closure engagement with the valve ports.

REFERENCES:
patent: 1136841 (1915-04-01), Shaw
patent: 1825544 (1931-09-01), Redding
Heinen, 2,977,086, 3-1961.
The Design of Valves and Fittings, 1953, G. H. Pearson.

Affiliated with

Also associated with

Rating

Linear retractable seal valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Linear retractable seal valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear retractable seal valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1320439