Back to results
US 8,627,843 B2Granted
Gate valve assembly for installation in pressurized pipes
AssigneeAds
InventorBrian J. Ries
Life of this patent
Estimating the term…
Abstract
A gate valve is disclosed that may be installed in a pressurized pipe or conduit. The gate valve includes a cylindrical gate housing that has a slot through which a rectangular gate slides between an open and closed position. The gate and gate housing provide seals between the gate valve and the housing section that houses the gate housing when the gate valve is in either an open or a closed position. The bottom seal that engages the pressurized pipe may be equipped with stiffening shields for a higher pressure rating. The operating torque to raise and lower the seal assembly has been substantially reduced by the design of the sliding gate within the gate housing.
Claims20
A gate valve comprising:
- a cylindrical gate housing that is solid except for a slot extending through a bottom of the cylindrical gate housing and towards a top of the cylindrical gate housing;
- the slot accommodating a seal assembly, the seal assembly including a gate having a top and a bottom, the top of the gate including a hole that passes through the top of the gate for receiving a feed screw, the hole including a shaped opening for loosely accommodating a stern nut, the hole also including a recess disposed in the top of the gate for accommodating a retention plate that is connected to the top of the gate, the feed screw passing through the retention plate and the recess, the shaped opening and the stem nut and into the hole, the feed screw threadably engaging the stem nut, the shaped opening providing a gap between the gate and the stem nut but preventing rotation of the stem nut within the shaped opening;
- the top of the gate being connected to a retention plate through which the feed screw passes, the retention plate also at least partially covering the shaped opening for retaining the stem nut within the shaped opening;
- the bottom of the gate including a groove for accommodating a seal;
- and
- wherein rotation of the feed screw causing extension of the seal assembly out of the slot or retraction of the seal assembly into the slot.
3 more elements
A kit for installing a gate valve into a pressurized pipe, the kit comprising:
- a gate valve housing including a base for engaging the pipe, the base connected to a proximal end of a housing section that extends at least substantially perpendicularly away from the pipe and that terminates at an open distal end;
- a temporary valve detachably connected to the distal end of the housing section;
- an installation housing having a proximal end connected to the temporary valve opposite the distal end of the housing section, the installation housing including an open distal end, the open distal end being connected to a cover, the cover including a central opening that sealably accommodates a shaft;
- the shaft including a proximal end connected to a cylindrical butting blade and a distal end connected to an actuator;
- the gate valve including a cylindrical gate housing that is solid except for a slot extending through a bottom of the cylindrical gate housing towards a top of the cylindrical gate housing, the slot accommodating a seal assembly, the seal assembly including a gate having a top and a bottom, the top of the gate including a hole that passes through the top for receiving a feed screw, the hole including a shaped opening for loosely accommodating a stem nut, the hole also including a recess disposed in the top of the gate for accommodating a retention plate that is connected to the top of the gate, the feed screw passing through the retention plate and the recess, the shaped opening and the stem nut and into the hole, the feed screw being threadably engaged with the stem nut, the shaped opening providing a gap between the gate and the stem nut but preventing rotation of the stem nut within the shaped opening, the top of the gate being connected to a retention plate through which the feed screw passes, the retention plate also at least partially covering the shaped opening for retaining the stein nut within the shaped opening, the bottom of the gate including a groove for accommodating a seal, the top of the gate including another groove for accommodating another seal.
2 more elements
Dependencies are inferred from the claim text.