Class 251/16 - Serial main line cut-off and manual valves (e.g., hydraulic "fuses")

Subclass of Class 251 - Valves and valve actuation
Definition: Subject matter in which a manually controlled valve and
No. of patents: 22
Last issue date: 06/03/2008

Number	Title	Issue Date
7380293	Safety valve for toilet tank A filling system for a toilet tank prevents continual flow to the tank in the event of a leak from the tank by providing a hydraulically actuated safety valve for halting water flow to the filling valve in the event that the water flow continues for a time longer th...	06/03/2008
7178975	Device and method for creating vortex cavitation in fluids Devices for mixing and/or reacting combinations of one or more liquids, gases or solids is provided. The device can generally have at least one cavity into which a fluid flows by way of a tangential orifice, thereby forming cavitation bubbles. The cavity is configur...	02/20/2007
6644345	Flow control valve A flow control valve is disclosed having a cylindrical housing having inlet and outlet ends and a central portion there between; a piston slidably disposed within the central portion and having a wall at one end thereof; a piston rod having a base and a t...	11/11/2003
6408870	Flow control valve A flow control valve is disclosed having a cylindrical housing having inlet and outlet ends and a central portion there between; a piston slidably disposed within the central portion and having a wall at one end thereof; a piston rod having a base and a t...	06/25/2002
6240959	Hydraulic safety fuse device A protective device for a hydraulic system includes a block which forms a housing with at least one fluid flow inlet into the housing and at least one fluid flow outlet. A plurality of fluid flow channels within the housing connect the inlet and the outle...	06/05/2001
5705969	Actuator An actuator for converting electrical energy into rotary or reciprocating motion comprising a casing filled with an electro-sensitive fluid, the casing having a plurality of electrodes affixed along its inner periphery and including a rotary member which ...	01/06/1998
5634489	Hydraulic fuse An improved hydraulic fuse to control hydraulic fluid flow through the fuse comprising an outer body; an annular metering body cylinder within the outer body and defining a bore, and a flow control port, whereby a flow path is defined between the outer bo...	06/03/1997
5535778	Drip irrigation lines flushing valve A self-closing valve for flushing drip-irrigation lines at the beginning of every irrigation cycle. The valve comprises a housing defining an enclosed space, having an inlet portion mountable to the line end, allowing free communication with the water of ...	07/16/1996
5507466	Volumetric hydraulic fuse valve A fluid fuse is operable to shut off fluid flow only when a certain predetermined volume of fluid has passed through in a single operative cycle. This can then be reset by dropping the inlet pressure. The device protects a hydraulic system from line ruptu...	04/16/1996
5411050	Capacity fuse valve An improved valve of the class referred to as capacity fuse valves which closes in response to passage of a total fluid flow volume through the valve to the valve outlet. The incoming fluid entering the valve inlet is split into a main flow that passes th...	05/02/1995
5186432	Safety valve Safety valve, characterized in that it principally consists of a housing (1), provided with an inlet (2) and and outlet (3); a main cut off valve (4) installed in the housing (1); and means working together with the flow of liquid which with the removal o...	02/16/1993
4962786	Hydraulic fuse with pressure regulator A hydraulic fuse monitors the quantity of hydraulic fluid passing through the fuse, and then blocks such flow when a selected quantity of fluid has passed through the fuse which includes: a body structure containing cavity structure; a primary piston in t...	10/16/1990
4819688	Volumetric, self-resetting, hydraulic fuse A hydraulic fuse or cut-off device divides fluid flow into: (i) a primary fluid stream; and (ii) a secondary fluid stream having a substantially constant, but small ratio of flow to said primary stream. The secondary stream exerts pressure on a timing pis...	04/11/1989
4783043	Hydraulic snub valve A hydraulic snub valve is provided for use with a source of motive fluid and a device which is to be moved by the motive fluid. The snub valve comprises a piston member which is slidably disposed within a cylinder that has an inlet port and an outlet port...	11/08/1988
4655240	Hydraulic volumetric proportioning valve A hydraulic volumetric proportioning valve which may be installed in pre-existing hydraulic systems such as aircraft landing gear extension and retraction systems to independently regulate and vary the rate of hydraulic system operation at desired stages ...	04/07/1987
4655245	Hydraulic fuse A hydraulic fuse monitors the quantity of hydraulic fluid passing through the fuse, and then blocks such flow when a selected quantity of fluid has passed through the fuse. It includes: (a) a body structure containing cavity structure, (b) a primary piston in ...	04/07/1987
4651907	Method and apparatus for dispensing a fluid using a fluid-operated timer A preferred cleaning system (10) is disclosed which includes a hydraulic timer valve (22) which is in fluid communication with a cleaning chemical dispenser (14) and a water supply (12). The hydraulic timer valve (22) preferably includes a bearing arrange...	03/24/1987
4650152	Automatic shut-off valve for welding electrode coolant systems A valve for controlling the flow of a liquid coolant in a circuit interconnecting several hollow welding electrodes with a pressurized coolant source has dual ball check valves in the supply and return lines respectively and a spring and pressure responsi...	03/17/1987
4589435	Water shutoff valve A water shutoff valve is disclosed in the preferred embodiment comprising a cylindrical body having a valve disk and water flow sensor therein. The sensor is operatively connected to a timer which automatically resets to zero upon interruption of water fl...	05/20/1986
4427174	Irrigation system flushing valve An irrigation system flushing valve comprising a housing, a coupling inlet of said housing for coupling to an end of an irrigation line, a flushing valve outlet of said housing, a valve seating formed in said housing communicating with said inlet and with...	01/24/1984
4209000	Fuel injection systems An improvement in fuel injection systems for diesel engines, by way of example, wherein, between the engine shutdown unit of the fuel pump and the air shutdown line from the cab there is interposed suitable structure which is responsive both to raised pre...	06/24/1980
3943972	System for conserving compressed air supply A system for disconnecting a compressed air control system from a main supply line if the system is not used with a predetermined frequency. A normally closed solenoid-operated three-way reset valve is controlled by a normally open hand-operated switch wh...	03/16/1976

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Class 251/16 - Serial main line cut-off and manual valves (e.g., hydraulic "fuses")