Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7647942 | Constant flow rate valve A constant flow rate valve has a housing in which a rotatable sleeve is positioned between the valve's inlet and outlet. Apertures in the sleeve move into alignment with the valve's inlet and outlet upon sleeve rotation to establish the fluid flow rate. A piston is ... | 01/19/2010 |
| 7328854 | Fluid control valve and droplet ejection device Exemplary embodiments can provide a fluid control valve, which reduces or prevents any bubble from being built up in the valve itself so as to protect other hydraulic equipment placed in a downstream side from having any malfunction due to such a bubble, and a dropl... | 02/12/2008 |
| 7219850 | Mechanical valve assembly A water spray nozzle assembly includes an internal channel that is sealable by an internal valve having a seat and a disc. A tilting member is operable to tilt the disc at least partially off of the seat, allowing water to flow through the internal channel. The disc... | 05/22/2007 |
| 7156120 | Inline liquid flow control valve An inline liquid flow control valve includes an intake fitting member with a bottom portion having a bottom portion threaded section and a liquid flow section having apertures. The valve further includes an outlet fitting member with a top portion having a liquid ou... | 01/02/2007 |
| 7086413 | Bi-directional damper valve for a hydraulic line, power steering system incorporating the damper valve, and methods of using same A bi-directional damper valve is provided for connecting to a hydraulic line, to regulate fluid flow therethrough. The damper valve includes a main valve body having a flow passage formed therethrough, and the flow passage widens at central portion of the valve body... | 08/08/2006 |
| 7082956 | Regulator with flow distributor A flow-through pressure regulator having a housing, and a divider. The housing includes an inlet and an outlet disposed along a longitudinal axis. The divider separates the housing into a first chamber and a second chamber, and includes a seat, a diaphragm, a retain... | 08/01/2006 |
| 7070160 | Diaphragm valves A diaphragm valve capable of increasing durability of a diaphragm comprises a valve body internally formed with a valve chamber having an open upper end and a suck-back chamber having an open lower end, between an inlet passage and an outlet passage, and a through h... | 07/04/2006 |
| 7066200 | Insert for dynamic flow control An insert for being mounted in a valve housing (80) or a tubular member for dynamic flow control of a flowing medium. The insert comprises:—a first cup-shaped part (1) provided with an outflow area;—a second cup-shaped part (10) arranged axi... | 06/27/2006 |
| 7066882 | System, method and apparatus for regulating vacuum supplied to surgical tools A system, method and apparatus for regulating vacuum applied to surgical suction devices allowing the use of a single vacuum regulator and associated canister to provide vacuum to two suction devices, such as a suction stabilizer and a suction retractor. Vacuum cont... | 06/27/2006 |
| 6934976 | Toilet flusher with novel valves and controls A tank-type flusher includes an intake valve, i.e., a fill valve, a diaphragm-operated flush valve, and a pressure control mechanism. The intake valve is connected to an external water source and is constructed to close water flow to a water storage tank at about a ... | 08/30/2005 |
| 6932107 | Flow control valves In one embodiment, a flow control valve includes a valve body having an inlet, an outlet, a flow passageway coupling the inlet to the outlet, and a cavity with first and second chambers. The valve further includes a hollow piston disposed in the first chamber and a ... | 08/23/2005 |
| 6923205 | Pressure regulator and shut-off valve A normally closed regulator valve for controlling the pressure of flowing fluid and also for selectively fully enabling or stopping the flow. The regulator valve includes a valve housing having an inlet passage and an outlet passage connected by a flow passage with ... | 08/02/2005 |
| 6874530 | Dosing unit and method for dosing liquid or gaseous educts for a fuel cell system A metering unit for metering liquid and/or gaseous educts by means of a feed pump for a fuel cell system, including at least one lead line for delivering an educt flow, at least one control piston, and a differential pressure valve for regulating the educt flow; the... | 04/05/2005 |
| 6786702 | Fuel metering unit A fuel metering unit including a pump having a rotor with a plurality of slots. The pump also includes a pivotally movable cam ring coaxially arranged with respect to the rotor. Vanes are slideably disposed in the slots for maintaining contact with the cam ring duri... | 09/07/2004 |
| 6761185 | Constant gas flow regulating device A constant gas flow regulating device includes an inlet chamber, an outlet chamber and a movable wall that delimits the inlet and outlet chambers from each other. The moveable wall carrics a body comprising an opening that permits communication between the inlet and... | 07/13/2004 |
| 6688321 | Method and apparatus for a flow regulator having an integral hinge A device for regulating the flow of gas from an environment. The device includes a shell forming a path through which fluid flows. A fixed grate is disposed in the path so that as fluid flows in the path the fixed grate does not move. A movable grate asse... | 02/10/2004 |
| 6688319 | Flow regulating control valve and method for regulating fluid flow According to one aspect of the invention, a fluid regulating control valve includes a housing having an upstream region and a downstream region and having a control orifice formed therein adjacent the downstream region and a piston slidably disposed withi... | 02/10/2004 |
| 6623250 | Fuel metering unit A fuel metering unit including a pump having a rotor with a plurality of slots. The pump also includes a pivotally movable cam ring coaxially arranged with respect to the rotor. Vanes are slideably disposed in the slots for maintaining contact with the ca... | 09/23/2003 |
| 6527195 | Regulating insert to be placed in valves, and valve unit A regulating insert for mounting in valves includes a dynamically flow regulating body, with the body having a first housing that is disposed within a second housing. A coil spring is arranged about an axis thereof, and a first end of the coil spring enga... | 03/04/2003 |
| 6517342 | Device for igniting fuel A device for igniting fuel, comprising at least one burner, the device comprising ignition means comprising an ignition element, the ignition means further comprising a movable element which is connected to a fluid line, such that a fluid contained in the... | 02/11/2003 |
| 6468051 | Helical flow compressor/turbine permanent magnet motor/generator A helical flow compressor used to supply gaseous fuel to a turbogenerator is equipped with an inlet throttling valve. The inlet throttling valve maintains the outlet pressure of the compressor at a preselected value.... | 10/22/2002 |
| 6276491 | Regulator for adjusting the fluid flow in a hydrostatic or aerostatic device A controller for controlling a medium flow fed from a supply to at least one hydrostatic or aerostatic pocket of a bearing, a threaded spindle nut or a guide, having a housing and having pressure chambers which are separated by a control element, movable ... | 08/21/2001 |
| 6205875 | Flow restrictor assembly in transmission clutch control system There is provided in accord with the present invention a work vehicle having a transmission and a clutch control system controlling the vehicle clutches, with the clutch control system including a flow restrictor assembly. The flow restrictor assembly com... | 03/27/2001 |
| 6202683 | Fluid flow fuse A fluid flow fuse has a body, which includes an inlet and an outlet with a valve seat therebetween. A valve stem having a valve member thereon is mounted in the body, and the valve member is operably connected to a diaphragm, which separates a region with... | 03/20/2001 |
| 6199582 | Flow control valve The flow control valve (10) has a body (11) and a valve mechanism (40). The body defines a chamber (20). The chamber involves an inlet (12) for receiving fluid to control, a valve seat (16) for passing the fluid, and an outlet (15) for discharging the flu... | 03/13/2001 |
| 6182688 | Autonomous device for limiting the rate of flow of a fluid through a pipe, and fuel circuit for an aircraft comprising such a device A device for limiting the flow rate of a fluid through a conduit operates autonomously without any external energy source, and independently of the level of pressure upstream, by operating on an imposed upstream-downstream pressure difference. The flow li... | 02/06/2001 |
| 6117311 | Positive shut off fuel pump dispensing filter A fuel filter for a fuel dispensing pump comprises a shell having a closed end and an open end. A plate is fixed in the open end of the shell. The plate has one or more fuel inlet openings and a centrally located fuel outlet opening. A rigid annular pervi... | 09/12/2000 |
| 5904177 | Fluid flow control device A system for controlling fluid flow to an approximate constant rate is disclosed. The system includes a housing, a flow control element, a cutout formed in the flow control element, a valve element, and a spring. The housing has an inlet opening and an ou... | 05/18/1999 |
| 5839467 | Micromachined fluid handling devices The fluid handling devices are capable of accurately handling substantially continuous fluid flow rates as low as about 0.01 cc/day. The devices are so miniaturized, corrosion-resistant and non-toxic that they are suitable for being implanted in the human... | 11/24/1998 |
| 5806557 | Water-operated hydraulic control valve A water-operated hydraulic control valve is disclosed, having a throttling device which comprises a throttling element (20) which is in the form of a piston which cooperates with a substantially hollow-cylindrical counter-element (8). In order also to be ... | 09/15/1998 |
| 5722454 | Fluid flow fuse A fluid flow device has a body which includes an inlet and an outlet with a valve seat therebetween. A valve stem having a valve member thereon is mounted in the body, and the valve member is operably connected to a diaphragm which separates a region with... | 03/03/1998 |
| 5685332 | Valve assembly A valve assembly for controlling fluid flow to an actuator, including first and second throttles for controlling partial flows therethrough, which together form a full flow to the actuator and which function indepedently from each other and are formed eac... | 11/11/1997 |
| 5582203 | System for controlling flow through a process region A regulator for maintaining a constant partial vacuum in a region, such as in a piece of process equipment or a fume hood. The regulator includes a path, through which fluid passes from the region to the vacuum source, and a movably mounted piston having ... | 12/10/1996 |
| 5513672 | Valve assembly A valve assembly for controlling volume flow from a discharge device to an actuator and including a discharge throttle, and a flow control valve for controlling flow through the throttle and having a piston, and end portion of which overlaps a channel for... | 05/07/1996 |
| 5509443 | Pressure regulator for industrial process exhaust system A pressure regulator for an industrial process system is connected between the industrial process equipment and pollution control equipment and exhibits a pressure inversely related to pressure changes in the pollution control equipment so as to maintain ... | 04/23/1996 |
| 5474105 | Overrun control device A pneumatic fluid flow limiting device which is pressure compensated and resets automatically when the pneumatic fluid driven device is shut off. Pressure compensation is accomplished by a vented differential diameter chamber and reset is accomplished by ... | 12/12/1995 |
| 5379797 | Hydraulic fuse A hydraulic fuse includes cooperating inlet and outlet members within which are positioned a fixed guide having main flow ports and pressure detecting ports, an axially slideable sleeve mounted on the fixed guide and a spring yieldingly urging the slideab... | 01/10/1995 |
| 5320124 | Regulator adaptable for maintaining a constant partial vacuum in a remote region A regulator, which may be used to regulate in a remote region a constant partial vacuum. The regulator controls the flow of gas from an environment, through a region and to an evacuation means. The regulator's fluid path is bounded on opposite sides by tw... | 06/14/1994 |
| 5257537 | Self actuating throttle valve A self-actuating throttle valve for use with fluid measurement apparatus such as a water meter. The valve includes a cylindrical body disposed within the outlet of the fluid measuring apparatus, fluid bypass openings formed in the body to enable fluid to ... | 11/02/1993 |
| 5251654 | Flow regulator adaptable for use with exhaust from a process chamber A regulator including a movably, preferably hingedly, mounted member having a distal face, exposed to a reference pressure, and a frontal face, exposed to fluid passing through the regulator. Attached to the member is a structure that variably impedes flu... | 10/12/1993 |
