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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 4314586 | Disposable valve A low-cost, two-piece medical valve with improved reliability which can be made utilizing a broader range of materials then heretofore possible and capable of manufacture with easily maintainable molding tolerances. These improvements result from the inco... | 02/09/1982 |
| 4303094 | Corrosion resistant valve construction A valve, such as a butterfly valve having an offset closure vane and stub shafts for operating the vane in the flow passage of the body, has all exposed and/or potentially vulnerable metal surfaces encapsulated in a corrosion-resistant polymeric plastic c... | 12/01/1981 |
| 4301833 | Flow responsive safety valve An automatic safety flow valve for fluid gas or liquid conveying conduits has a fluo-dynamically surface substantially flat plate eccentrically pivoted to turn in response to fluid flow rates above a normal threshold from a position substantially parallel... | 11/24/1981 |
| 4300587 | Relief valve An absolute pressure relief valve including a venturi and a diaphragm, for limiting the discharge pressure of an aircraft compressor.... | 11/17/1981 |
| 4294279 | Fuel tanks A fuel tank largely filled with a plurality of discrete impermeably walled cells, the cells and the space between them and the tank sides and roof being substantially filled with fire protective reticulated structure. The cells are each plugged into one o... | 10/13/1981 |
| 4291719 | Valve sub-assembly A valve sub-assembly as illustrated by the drawing insertable at a "T" connection in a preformed channel so as to form a multiport valve at the site. The valve subassembly is characterized by a cage structure containing spaced apart tied together wafers w... | 09/29/1981 |
| 4289297 | Butterfly valve A butterfly valve comprising a valve body, a disk-shaped valve member pivotally provided on the valve body, and a seat ring fixed to the valve body, the seat ring having a circumferential protrusion on an inner surface thereof.... | 09/15/1981 |
| 4289159 | Outlet valve for a gas compressor An outlet valve for a gas compressor includes a valve seat 1 formed with several rows of apertures 16, a thin flat valve plate 2 having several spaced spring tongues overlapping the apertures, a limit plate 4 overlying the valve plate, and a pressure memb... | 09/15/1981 |
| 4287906 | Control valve A multi-function valve device for controlling the operation of a pneumatically-driven motor. A spring-biased linkage couples a cam-operated push pin to a valve spool assembly. The valve spool assembly coaxially combines the movable elements of a pressure ... | 09/08/1981 |
| 4286615 | Apparatus for measuring the amount of fluid supplied by a fluid supply device Apparatus for measuring the amount of fuel supplied by a fluid supply device wherein a throttle element is inserted in a supply line to a supply device having an apportioning cross-section wherein a constant pressure differential is maintained by means of... | 09/01/1981 |
| 4286769 | Valve seat A valve seat contains a seat ring (12) with flat, parallel side faces (19, 20). The seat ring consists of steel or possibly of PTFE. When the valve is being shut by a throttle (1), a sealing surface of the throttle is pressed against the seat ring which a... | 09/01/1981 |
| 4285198 | Accumulator charging valve The charging valve comprises a pressure port connected with a pressurized fluid source, a first user port which is connectible to a first user component, a second user port which is connectible to an accumulator and to a second user component of the close... | 08/25/1981 |
| 4284264 | Butterfly valves A butterfly valve with a seal face (4)having two opposite, essentially spherical sections (h, i) intersected by a symmetry plane (k) through the throttle which coincides with an axis through a point (n) parallel with the torsional axis (j) of the throttle... | 08/18/1981 |
| 4281679 | Flow control means for use in an adaptor assembly An adaptor assembly for connecting a tubing with either a male or female fitting is disclosed. Flow control means within the adaptor assembly comprise an important feature of the disclosed and preferred embodiment wherein the flow control means comprises ... | 08/04/1981 |
| 4281819 | Balanced stem gate valve A balanced stem gate valve incorporating a slab gate having hard friction resistant sealing face surfaces that cooperate with friction resistant seat assemblies to provide for low operating torque under high pressure conditions. Seat carrier rings are sup... | 08/04/1981 |
| 4277945 | Control system for equalizing the torques of multiple engines driving a common load A control system equalizes the torques of a lead and a slave engine driving a common load by comparing the throttle settings of the engines and controlling the slave engine throttle with a speed signal equal to the algebraic sum of the lead engine speed s... | 07/14/1981 |
| 4278235 | Male ended valve A forged steel male end valve provided with a new and improved body with a centering end ring adapted for butt welding as for instance with respect to a tank or pipe, said body being greatly enlarged in diameter, compared to the bore of the body, adjacent... | 07/14/1981 |
| 4277046 | Irrigation valve This invention provides a valve consisting of a body and rotatable valve member, both of which are made of plastic, the valve body having a passageway intersected by a frustoconical opening which receives the valve member. The valve member is rotatable fo... | 07/07/1981 |
| 4275761 | Duct assembly for rotor-powered mobile sprinkler A mobile sprinkler propelled by water pressure has a bellows coupled with a ratchet drive, water being alternately admitted to the bellows under pressure via one conduit and discharged therefrom via another conduit forming part of a squeeze-duct assembly.... | 06/30/1981 |
| 4275867 | Valve assembly and method A disc-type valve assembly and method of making same. The assembly includes a valve body having a flowway with a disc-like valve element therein. A shaft has an inner portion directly rigidly connected to the valve element by a pre-stressed self-connectio... | 06/30/1981 |
| 4275752 | Fluid flow apparatus and method Apparatus for combining fluid flows in variable proportions is adapted for blending an active constituent gas and a diluent gas to calibrate gas analyzers used in monitoring pollution. Diluent gas passes from source 34 through a downstream differential pr... | 06/30/1981 |
| 4275754 | Automatic valve actuator A valve actuator provides preselected automatic spring-powered actuation of a rotary-actuated valve in response to fire, or other occurrence of a specific exigent type. The actuator is secured to a valve having a shaft extending from the valve body and ro... | 06/30/1981 |
| 4275868 | Valve with body and stem of plastic material A plastic valve assembly includes a body member and a controller member each having alignable transverse flow passageways and constantly aligned longitudinal flow passageways. The controller member is positioned in the body member for rotatably aligning t... | 06/30/1981 |
| 4274433 | Packed plug for a fluid valve In a valve structure, a valve plug apparatus to provide a leak-tight valve shut-off, is disclosed. The valve structure includes a valve body provided with an inlet passage, an outlet passage and an internal web portion intermediate the inlet and outlet pa... | 06/23/1981 |
| 4274435 | Excess pressure valve particularly for a fluid pressure operated telescopic supporting element employed in underground mining An excess pressure valve particularly for props having telescopic parts which are extensible or retractable by fluid under pressure used in underground mining operations, comprises a valve housing having a bore therethrough with a connection end connectab... | 06/23/1981 |
| 4273153 | Vibration resistant pressure actuated vacuum breaker A vacuum breaker for use on a moving tank for allowing atmospheric air to enter the tank to relieve a reduced pressure condition in the tank. The vacuum breaker has a light-weight closure assembly including a closure member of relatively large area. The c... | 06/16/1981 |
| 4273308 | Rotary valve A concentric rotary valve having a rotatable stem of a valve disc supported by bearing portions and metal seats mounted in a valve housing to contact metal seats on the valve disc. Clearances in directions parallel to a closed disc surface and radial of t... | 06/16/1981 |
| 4273151 | In-line relief valve A safety relief valve especially suitable for connection in a pressure gas system for beverage dispensing equipment has a body that defines a vented cylindrical valve cage and a coaxial annular valve seat at one end of the cage with an annular seating sur... | 06/16/1981 |
| 4272057 | Valve and fastener therefor An elongate flexible cable is used as a fastener for preventing sliding movement between adjacent surfaces of two valve components. The cable is inserted through a closable port in the valve, and extends through a uniform channel formed by aligned grooves... | 06/09/1981 |
| 4271858 | Butterfly valve having temperature responsive sealing means In a butterfly valve, comprising a valve disk which is pivotally mounted in a valve housing for movement between a closed position, in which it prevents the flow of fluid along a passageway defined by the housing, and an open position in which the flow of... | 06/09/1981 |
| 4272640 | Automatic sewage valve A valve installed in a sewer pipe or drain pipe extending from a house or other building to a street sewer pipe or the like which will automatically close when sewage backs up from the street sewer pipe toward the house or building structure thereby preve... | 06/09/1981 |
| 4272051 | Apparatus for metering fluids A clamp for providing a stable fluid flow rate through a flexible tubing has a channel having a bottom wall including an anvil for supporting the tubing and an opening along its entire length for readily receiving and supporting the tubing against the bot... | 06/09/1981 |
| 4270566 | Self-restricting shutoff valve A self-restricting shutoff valve for use with a fluid leak detector to prnt excessive loss of fluid in event of a high flow-rate leak. A valve spool within a valve body is spring-biased to a partial flow position and is maintained in an opened position b... | 06/02/1981 |
| 4270725 | Roller clamp for defining a flow lumen in tubing A two piece roller clamp is disclosed for regulating the fluid flow rate through plastic tubing by defining the size of the tubing lumen. The clamp includes a U-shaped body with a base and two side walls and a longitudinally movable roller mounted in trac... | 06/02/1981 |
| 4270563 | Pressure actuated safety device A safety device for preventing overpressures in low pressure reservoirs receiving compressed gas through a feedline connected to a high pressure source is disclosed including a spherical stopcock in the feedline. A cylinder is provided in pressure communi... | 06/02/1981 |
| 4270730 | Means to retain a valve stem A retaining device to hold a butterfly valve stem (26) in the valve body upon a shearing or breaking of the stem. The retaining device is mounted within a bore (38) in the valve body (12) beneath the stem packing and includes pins (44) extending from the ... | 06/02/1981 |
| 4270732 | Fluid control valve A fluid control valve has a cylindrical body member with inlet and outlet passages in spaced relation to one another. A control stem is movably positioned in a control chamber formed by the body member. A split expandable sleeve in the control chamber is ... | 06/02/1981 |
| 4269391 | Valve sealing device and a valve A valve sealing device is proposed consisting of two parts, one of which contacts the body of the valve and is made of an expanded graphite compact or an expanded graphite--inorganic binder composite compact, and the other of which contacts the valve memb... | 05/26/1981 |
| 4268004 | Self-releasing hose clamp A self-releasing clamp for a fluid carrying hose comprises an inclined guide and a roller carried by the guide which is movable along the guide between a hose releasing position and a hose clamping position. There is a hose support for holding the hose ag... | 05/19/1981 |
| 4268005 | Pinch valve An improved pinch valve construction which curtails and prevents end leakage where the valve is joined between two sections of duct or conduit; the valve is especially adapted for usage in large-sized piping such as ducts or conduits having diameters from... | 05/19/1981 |
