Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7363943 | Multi-stage pedal control water supply A multi-stage pedal control water supply installation includes a tap provided with water inlet and water outlet, a control valve with orifice, a linking unit, one or a plurality of pedal, and a flow control unit; the flow control unit being disposed by one side of t... | 04/29/2008 |
| 7051994 | Control valve with detachable descrete curtain valve assembly Valves, particularly useful for controlling flow of heat transfer fluids in various heating, air conditioning and ventilation systems, are provided. The valves are of the curtain valve type and operate at very low torque and provide easy assembly and repair. The val... | 05/30/2006 |
| 6899136 | Valve arrangement The present invention relates to a mixing valve that can be included in pulmonary respiration equipment and with which oxygen (2) and air (3) can be mixed in adapted proportions. The mixing valve (1) comprises a valve housing (40) that ha... | 05/31/2005 |
| 6818068 | Conveyor for treating hollow bodies comprising an advanced pressure distribution circuit Aconveyer for treating hollow bodies, comprising several identical treatment stations (12, 13) that process at least one hollow body, whereby the respective treatment station for a given treatment stage communicates with a pressure source via distribution mea... | 11/16/2004 |
| 6591619 | Motor-operated selector valve and refrigerating cycle device for refrigerator-freezer In order to realize higher compatibility of high-performability and energy saving of a refrigerator-freezer, a valve housing having one inlet port normally communicating with a valve chamber and first and second outlet ports B, C opening on a bottom face ... | 07/15/2003 |
| 5431189 | Flow control manifold and gauge A switching manifold in conjunction with a refrigerant gauge which provides means for switching between refrigerant testing, charging, liquid recovery and vapor recovery modes without the need to change or reconnect any hoses and/or conduits. The inventio... | 07/11/1995 |
| 5267585 | Elastomeric flow control valve A flow control valve is disclosed wherein a deformable elastomeric element is positioned at least partially within the flow path of a fluid passing between an inlet and an outlet. By deforming the elastomeric element, the cross-section of the flow path of... | 12/07/1993 |
| 4746491 | Serial dilution of liquid samples An apparatus and method for serial dilution of liquid samples comprises a power-driven measuring valve having a rotatably mounted valve body provided with a single calibrated measuring passageway. During a dilution cycle the measuring passageway in differ... | 05/24/1988 |
| 4643392 | Valves A valve for use in controlling a plurality of fluid operated functions, for example the functions of a hydraulic mine roof support, comprises a valve body 10, a plurality of valve members 13 each movable independently to carry out a fluid flow control fun... | 02/17/1987 |
| 4593717 | Valve The disclosure relates to a four-way valve, incorporating a fail-safe pivotal valve stem, a finger knob indicating simultaneously both closed and opened ports, and three connector fittings oriented in a Y configuration about the centrally located valve st... | 06/10/1986 |
| 4342194 | Electric air control switching valve An electric air control switching valve for use in controlling the delivery of secondary air from an engine driven air pump selectively, as a function of both engine operation and the operation of its associated emission control system, to either the exha... | 08/03/1982 |
| 4245466 | Delta electromagnetic control valve An electromagnetic valve has a housing with interior side walls defining a deltoid valve chamber with an inlet port opening thereto. Each of the three side walls defining the sides of the valve chamber has a discharge port extending therefrom. Each side w... | 01/20/1981 |
| 4228786 | Flow director A flow director including a diverting box defining four openings and having four baffles mounted therein. A damper is rotatable within the diverting box to provide for flow in one position between the first and fourth openings and between the second and t... | 10/21/1980 |
| 4210178 | Perpetual by-pass flushing device A flushing device for placement in a slow infusion line of liquid to a human or animal body through a catheter, cannula or similar item that provides a flushing or cleaning by-pass route merely by, and only during, finger pressure applied to the flushing ... | 07/01/1980 |
| 4116211 | Valve assembly A liquid manure spreading apparatus having a tank and a pump selectively operable to evacuate air from within the tank or supply air to the tank. A safety shut off valve located in the tank having a ball and an elongated float confined in a cage is operab... | 09/26/1978 |
| 3978707 | Flow control apparatus and system Flow control apparatus of the type having more than two flow passages in the body and having means within the body including a plurality of sealing assemblies which are positioned to control or divert fluid flow in a desired manner. The apparatus is featu... | 09/07/1976 |
| 3965935 | Mixer tap The tap is actuated by a rod carried by a spherical ball mounted in the tap body by bearing means and has two inlet orifices in an end wall of the tap body. A flat slide capable of closing or opening the inlet orifices is connected to the ball by a transm... | 06/29/1976 |
| 3957081 | Modifier A mixing valve having one single control device by which the fluid output and the temperature of the fluid output are regulated independently. The valve has two plates, one slidable on the other, one plate having an orifice in fluid communication with the... | 05/18/1976 |
