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9027593 Check valve  
The invention relates to a check valve for blocking a fluid-carrying line in case of reversal of the flow direction, containing a valve housing defining a flow path and having two connecting...
8746479 Method of closing a fuel tank with a pivotal door and seal  
A method for closing a fuel tank includes providing a base sized to be received within an interior of a fuel tank filler neck, movably mounting a closure structure on the base, and securing a...
8667794 Valve seat and gasket for exhaust bypass valve  
An assembly can include a valve seat for an exhaust bypass valve of a serial turbocharger system where the valve seat includes a base portion and a wall portion that extends axially away from the...
8567435 Centreline flow valve  
A valve (10) is disclosed. The valve (10) has an inclined valve seat (14) defining a fluid aperture (18), and a valve head (20) for contact with the valve seat (14) for closure of the fluid...
7673695 Dry pipe/deluge valve for automatic sprinkler systems  
A dry/deluge valve for an automatic sprinkler system. The valve includes a main chamber having an input port for receiving fluid from a supply line and an output port. A clapper assembly is...
7585164 Backflow preventing apparatus for compressor  
A backflow preventing apparatus for a scroll compressor is disclosed, in which a check valve is hinge-coupled to a valve seat, or is coupled to a valve seat so as to be elastically opened and...
7559338 Keyless fire hydrant protection system  
The protection system protects a fire hydrant. The protection system includes a nozzle, a protection device, and a bracket assembly. The nozzle defines a bore, is in fluid communication with an...
7458391 Assembling a siphonable filler tube with a check valve on a fuel tank  
A fuel filler tube assembly including a one-way valve or check valve. The tube assembly is adaptable for pre-assembly on either a metal or plastic fuel tank and employs a common check valve with...
7426979 Exhaust gas control valve  
An exhaust gas control valve includes a valve seat, a valve plate having a first exhaust gas pressure receiving area corresponding to an opening area and a second exhaust gas pressure receiving...
7195032 Unidirectional, adjustable flap valves  
The invention provides a flap valve for controlling the air pressure within a protected space defined by walls, the flap valve including a valve frame attachable to an opening made in the walls, a...
7152622 Check valve  
A top entry check valve including a valve body with an access port. A compressible hanger body engages a portion of the valve body and is positioned in alignment with the access port of the valve...
7147001 Fuel-transfer system  
A fuel-transfer system is provided for a fuel system of a vehicle. The fuel-transfer system includes a filler neck and a fuel tank having top and bottom walls. The fuel-transfer system includes a...
7137405 Low pressure check valve  
A check valve for preventing backflow of media including a valve movably coupled to a carrier body, the valve including a flexible membrane disposed therein such that the flexible membrane...
6901954 Safety relief valve  
A safety relief valve is provided for use in association with a liquid storage tank. The safety relief valve generally includes a valve base, a valve seal plate, a hinge mechanism and a lever...
6694996 Swing check backflow preventor having check valve with lever arm  
A swing check valve for controlling fluid flow, including a valve housing having a port for fluid flow therethrough. A valve assembly is disposed within the valve housing for controlling the fluid...
6668858 Check valve  
A check valve is provided having a valve body and a sealing assembly within the valve body. The sealing assembly is biased, via a biasing force, in a seated position against a valve seat adjacent...
6637449 Pressure sensible valve for exhaust muffler and method of assembling same  
A valve seat structure is secured to an outlet end of a passing pipe installed in an exhaust muffler. The valve seat structure includes a flat seat surface portion which extends around the outlet...
6581721 Valve for a control muffler  
A valve for a control muffler includes: a valve element which is swingably journaled on a support shaft 5 supported by shaft holes 41a of a pair of first shaft supporting portions 41 inside the...
6273399 Air pressure stabilizer  
An air pressure stabiliser device is adapted to be located in a aperture in a wall, which may be provided by ductwork, extending into and from a room within which the pressure is to be maintained...
6264452 Reinforcement pin for check valve  
A scroll compressor has a check valve plate assembly with a reinforcing device to increase the strength of the check valve plate. The check valve plate is stamped from a relatively thin steel reed...
6247489 Check valve  
A valve is disclosed. The valve has a housing that defines a central area and has at least two flow ports therethrough. A cover is provided that has a flapper assembly pivotally attached thereto....
6050293 Flapper check valve  
A check valve assembly mounted for engagement with a valve seat includes a flapper valve and a lever arm. The flapper valve includes a bracket pivotably mounted along a first hemisphere of the...
6026853 Fuel tank filler neck check valve  
The present invention provides a check valve including a seal door which is normally spring biased towards a closed position but which is responsive to a flow of fuel for displacing to an open...
5947152 Check valve and backflow preventer  
A check valve or backflow preventer has a valve mechanism mounted to a valve cover for removal and replacement as a unit. The valve clapper is resiliently supported to accommodate variations in...
5904338 Valve  
A valve, includes a housing formed with a valve seat and having an inlet port and an outlet port; and a shut-off member positioned in a passageway between the inlet port and outlet port and so...
5794655 Swing-type check valve assembly having an integrated valve seat and valve housing cover  
A swing-check valve for controlling fluid flow includes a valve housing and a valve assembly connected to a removable cover of the valve housing for rigid positioning of the valve assembly within...
5769116 Composite action type water-hammer-preventive check valve  
The invention has its object to radically resolve an untapped technical issue in a non-water hammering check valve device, in which a valve disc, a valve seat and a surrounding flow passage are...
5671769 Swing check valve and method for repairing same  
A swing check valve, which is adapted for automatically inhibiting back flow of fluid from an outlet thereof to an inlet thereof, includes a clapper member and a housing. The housing has a first...
5411056 Pressure relief valve  
A pressure relief valve, for pressurized fluid storage vessels such as a rail tank car for volatile liquids, has a flap valve for rotational movement in a valve passage between a closed position...
5381821 Fluid check valve with replaceable flapper assembly  
A replaceable flapper and keeper assembly for a fluid check valve. The assembly may be part of a larger replaceable seat ring assembly or be adapted to be secured directly on an integral check...
5236007 Top-entry check valve having retainer ring  
A top-entry check valve having a seat, cage, disc and removable bonnet utilizes a retainer ring to prevent movement of the seat, cage and disc in the downstream direction. An annular shoulder in...
5191913 Top-entry check valve with pin fasteners  
A top-entry check valve having a valve body, a valve cartridge assembly and a removable bonnet utilizes pin fasteners to prevent movement of the valve cartridge assembly in the downstream...
5161566 Top-entry check valve with screw-in seat  
A top-entry check valve having a seat, cage, disc and removable bonnet utilizes threaded engagement of the seat and mating counterbore in the valve body to prevent movement of the seat, cage and...
5156183 Top-entry check valve having spring retainer  
A top-entry check valve has a valve chamber containing a seat, cage, disc and utilizes a spring retainer to prevent movement of the seat, cage and disc in the downstream direction. A removable...
5010919 Subsea barrier valve  
A subsea barrier valve 20 with a valve clapper 60 adapted for free swinging movement on a clapper shaft 62 between a position which closes the flow passage through the valve and a position...
4852607 Support for check valve disc  
A swing check valve having a disc where the opposite end portions of the hinge pin of the disc are supported on flat surfaces formed at the opposite ends of a segmented ring surrounding a portion...
4813451 Swing check valve with removable cartridge  
A replaceable cartridge for a swing check valve which includes the valve seat, disc and hinge pin retainer, wherein the hinge pin retainer is secured in position by deforming a portion of the...
4800919 Flap gate assembly  
A flap gate installation for systems where liquids are pumped into a holding tank has a fabricated frame surrounding the port of the conduit which opens into the tank. A flap gate is hingedly...
4781212 Swing check valve with removable cage and disc  
A swing check valve having the disc supported in a surrounding cage and constructed with a minimum swinging arc. The cage is designed to permit the swinging movement of the disc through...
4608976 Breathing protective apparatus with inhalation and exhalation regulator  
An improved breathing protective apparatus having an inhalation regulator and a primary source of breathing air supplied to the user through a pressure line, and an exhalation regulator with a...
4586534 Check valve mechanism  
A check valve mechanism providing a valve body and valve seat assembly having noncircular eccentrically located hinge pin receptacles with independently controlled X-axis and Y-axis hinge pin...
4561630 Valve  
A valve for sealing off pressurized fluid for an extended period comprises, a body defining a passageway, a closure member in said passageway for closing off the latter against fluid flow, a...
4427025 Swing check valve  
A swing check valve having a generally cylindrical body with a fluid passageway extending therethrough, an annular resilient seat molded in place within said passageway and oriented normal to the...
4281680 Swing check valve construction  
A pipeline swing check valve comprising a fabricated valve body with a fabricated cylindrical hub member welded therein. The clapper is hinged, not to the body, but directly to the hub member or...
4261383 Field convertible sump check valve  
A swing check valve having a generally cylindrical body with a fluid passageway extending therethrough, an annular resilient seat molded in place within the passageway and oriented normal to the...
RE30507 Heart valve prosthesis  
A heart valve having a base with a passage and a free-floating pivoting disc for controlling the flow of blood through the passage. Inwardly directed proximal and distal pivots control the...
4225435 Blocking device for use in a sewer manhole  
The invention concerns a blocking device for obstructing the opening of an inlet pipe in a sewer manhole, so that rats and like rodents are restrained. The blocking device comprises a ball or...
4215716 One-way conduit closure  
A conduit has an upper and a lower open end. A sealing ring surrounds the conduit exteriorly adjacent the lower open end, and a cover is mounted on the conduit to be located beneath the lower open...
4188973 Check valve  
A check valve having a body with an inlet, an outlet, a valve seat surrounding communication between said inlet and said outlet, a valve chamber in said body communicating with said outlet, a...
4141381 Swing check valve  
A swing check valve which includes a valve body having an inlet and outlet. A recess in the valve body designed to hold a seal ring and a check valve disc swingable between open and closed...

Matches 1 - 50 out of 98 1 2 >