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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 4884596 | Plumbing fixture with interior insulating and adhesive foam A plumbing fixture includes a tubular waterway and an enclosing cover. There is a space between the cover and waterway. In the method of manufacturing such plumbing fixture, a foam material consisting of a base and a catalyst therefor is positioned within... | 12/05/1989 |
| 4865062 | Valve assembly for a pipe flushing device An improvement in a pipe flushing device is provided. The device includes a hollow, elastomeric tubular member expandible by water pressure and having open opposite ends. A hose connector is connected to the inlet end thereof and a valve connected to a tr... | 09/12/1989 |
| 4859403 | Feedwater sparger restraint A restraint to enable temporary bracing and operation of a thermally cracked sparger nozzle mounted from a sparger manifold at the end of a pipe elbow is disclosed. The restraint includes a second and surrounding restraint elbow which is fitted over and c... | 08/22/1989 |
| 4848400 | Rotary fluid coupling The rotary fluid coupling decreases the possibility of microcontaminates entering the fluid flow line and is thus especially suitable for processing equipment in manufacturing of wafers and other components for the microcomputer industry. The rotary fluid... | 07/18/1989 |
| 4848396 | Cast hopper tee An integral one-piece hopper tee is disclosed as providing a generally vertically directed hollow pipe section having a laterally outwardly direct flange at an upper end thereof for attachment to the bottom of a hopper truck. At the other end of the verti... | 07/18/1989 |
| 4847166 | Slide parts Disclosed are slide parts, comprising one part made of an aluminium alloy having an Alumite layer formed on the slide surface thereof and the other part made of an aluminium alloy having a Fe-series wet-plated layer formed on the slide surface thereof, wh... | 07/11/1989 |
| 4838318 | Elbow cover for an elbow in pipework A plastics elbow cover (A) capable of being positively and securely mounted on an elbow section of piping. The elbow cover includes a tab (9, 10) extending from each of two sides of a cover section (8) which fits over the pipe. One of the tabs (9) include... | 06/13/1989 |
| 4830060 | Specialized pipefitting cover for insulated Y-shaped joint A pipefitting cover specially designed to enclose an insulated Y-shaped joint is disclosed comprising two half sections, one adapted to the shape of a straight pipe segment and the other adapted to interlock with the other section while also accommodating... | 05/16/1989 |
| 4825900 | Valve assembly for a pipe flushing device An improvement in a pipe flushing device is provided. The device includes a hollow, elastomeric tubular member expandible by water pressure and having open opposite ends. A hose connector is connected to the inlet end thereof and a valve connected to a tr... | 05/02/1989 |
| 4826132 | Solenoid valve, especially an outlet valve for infusion water A solenoid valve, especially an outlet valve for infusion water. A valve chamber (2) is accommodated in a valve housing (1) and communicates with a supply channel (Z) and with a drain channel (A) by way of a valve seat (3). The magnetic armature (6) of a ... | 05/02/1989 |
| 4807669 | Removable flexible pipe insulation A removable reusable insulating unit for insulating an exposed section of an insulated pipe system is disclosed. The insulating unit has a hollow body portion with insulating walls for enveloping the exposed section of the pipe system. The body portion ha... | 02/28/1989 |
| 4805874 | Valve casing for use in a butterfly valve In the valve casing according to the invention, a cylindrical elastic member is fitted to solidly coat a whole inner surface of the valve casing to form a passage, while performing a function as a seal ring for pipe lines and a function as a seat ring for... | 02/21/1989 |
| 4798365 | Throttling gasket insert for use with knife gate valve A throttling gasket insert (34) for attaching a knife gate valve (10) into a pipe string is constructed of a single piece of resilient gasket material having a washer-shaped flange portion (36), to be clamped between a facing surface (52) of a knifegate-v... | 01/17/1989 |
| 4792116 | Sandblasting nozzle and control valve assembly A control valve assembly to be assembled with a discharge nozzle of a sandblasting abrasive cleaning system or the like, comprising a valve housing to be connected at an inlet end to a supply conduit having a lower valve chamber and a well formation provi... | 12/20/1988 |
| 4791953 | Regulator and shut-off valve for corrosive media The regulator and shut off valve for a corrosive media, particularly for a wet chlorine-containing gas and a chloride ion containing fluid, comprises a pressure resistant housing and a shut-off member held between at least two seat rings. The housing has ... | 12/20/1988 |
| 4777977 | Composite butterfly valve housing A butterfly valve housing which is to be interposed between two sections of as conduit includes a metallic core body and a covering body of a high-rigidity synthetic plastic material which is molded around the core body to substantially completely encase ... | 10/18/1988 |
| 4776362 | Relief valve for fluid line A pressure relief valve having an external valve body substantially cylindrical, with a bore therethrough positioned atop the exterior of the pipe, an internal stem portion movable within the bore within the valve body, including a tip for extruding in th... | 10/11/1988 |
| 4774750 | Method of manufacture of a composite butterfly valve housing A butterfly valve housing which is to be interposed between two sections of as conduit includes a metallic core body and a covering body of a high-rigidity synthetic plastic material which is molded around the core body to substantially completely encase ... | 10/04/1988 |
| 4771803 | Ball cock with sinter ceramic valve seat and valve ball A ball cock having sinter ceramic valve ball and seat rings, also has wear-resistant bushings between the pipe connectors joined to the ends of the housing sleeve and the seat rings. Compressible seals bearing upon the bushings and clamped between the bus... | 09/20/1988 |
| 4765361 | Ported gate valve A gate valve formed with spaced parallel housing plates having axially aligned apertures which constitute a housing therebetween. Elastomeric sleeves line the apertures of the housing plates to provide an annular space between the sleeves. An elongated ga... | 08/23/1988 |
| 4738356 | Container for aggressive liquids A container intended for transporting and discharging aggressive liquids, such as silicon tetrachloride, is closed with a container lid which carries a valve head. The inner surfaces of the container and of the container lid are lined with fluorinated hyd... | 04/19/1988 |
| 4735229 | Wear monitoring construction for erosive/corrosive flow conducting devices A wear monitoring device for use in a choke valve. The device includes a wear liner which fits in the flow annulus of the valve. The liner is sealed at either end from the fluid inlet valve and defines an annular void space in fluid communication with a p... | 04/05/1988 |
| 4726394 | Heated cover for pipeline backflow preventer component assembly A heated, insulated cover for a portion of a pipeline with valve and backflow preventer components exposed to the atmosphere, the cover being sectionalized so as to be assemblable around the valve components, with hand manipulated clamps to hold the cover... | 02/23/1988 |
| 4716926 | Housing for heat insulating armatures and/or flange connectors A housing for heat insulated armatures and/or flange connections with two box like housing parts, wherein different dimensions of pipelines or and actuating device for an armature, for example, a control gate, is compensated by at least one adapter piece,... | 01/05/1988 |
| 4714234 | Low power electromagnetic valve An electromagnetic valve comprising a housing having fluid containing region and first and second ports in communication therewith, an electromagnet carried by the housing located external to the region, and a thin fluid impermeable diaphragm barrier herm... | 12/22/1987 |
| 4712579 | Well flow line choke In a fluid flow line from a well in the earth, a choke means is employed to restrict the flow of fluids through that line. The choke has a body with apertures therein for passing fluid therethrough and an insert means in one of the apertures of the body w... | 12/15/1987 |
| 4708161 | Plug valve A tapered plug valve containing a tapered plug surrounded by a sleeve of elastomeric material which deflects upon high fluid pressure applied through the valve inlet port, leakage which might otherwise occur due to such deflection being absorbed by `O` ri... | 11/24/1987 |
| 4697615 | Butterfly valve for controlling high-temperature fluid A butterfly valve for controlling high-temperature fluid including a ceramic valve is disclosed. The butterfly valve exhibits excellent high-temperature sealing and heat insulating characteristics and strength sufficient to rigid support the valve disc th... | 10/06/1987 |
| 4696324 | Heat foam insulation jacket A unitary removable and reuseable jacket for the thermal insulation of pipe accouterments is disclosed. The fully-formed generally-rectangular jacket is composed of three layers: a heat and water resistant outer fabric layer, a hardened rigid-cell polyure... | 09/29/1987 |
| 4696323 | Plastic lined rotatable valve Disclosed is a plastic lined rotatable valve. The valve includes a valve body that is formed by at least two connected together body parts or halves. Each body half is lined with an inert plastic material. The seal between the body halves or parts is prov... | 09/29/1987 |
| 4688597 | Gate valve A packingless gate valve is disclosed which includes a housing having opposed similar housing halves with resilient sleeve units which compressibly engage each other in the valve open condition and engage opposite sides of the gate in the valve closed con... | 08/25/1987 |
| 4687019 | Float valve assembly A float valve assembly comprises a valve body defining an internal chamber having upper and lower openings and a vertically movable ball or poppet in the chamber for moving upwardly to close the upper opening to prevent upward flow of fluid and for moving... | 08/18/1987 |
| 4683906 | Trunnion type ball valve A trunnion type ball valve arranged so that biasing means is not needed to establish a seal between the valve seats and the ball when the valve is in the closed position. There is no load on the valve seats in the open position and a sufficient load in th... | 08/04/1987 |
| 4676268 | Plastic gate valve A plastic gate valve including a plastic valve casing having a passage and a valve chamber therein; a spindle extending in the valve chamber and rotatably supported by the valve casing; a handle connected with the spindle and rotating it; and a plastic va... | 06/30/1987 |
| 4674528 | Butterfly valve A butterfly valve includes a body having pipe connecting parts forming two opposite ends thereof and a cylindrical flow path interconnecting the pipe connecting parts, a stem attached rotatably at the central part of the body diametrically across the cyli... | 06/23/1987 |
| 4674529 | Check valve This invention is concerned with a check valve made up of two housings or castings, each of which has a corrosion resistant liner which provides improved support and operation of the ball or check member and increased resistance to liner collapse when ope... | 06/23/1987 |
| 4669499 | Valve casing for use in a butterfly valve This invention is intended to solve the problem that a valve casing for use in a butterfly valve formed by press working, which is advantageous from the standpoint of productivity, thickness and weight, has such as a serious disadvantage of breakage or de... | 06/02/1987 |
| 4664139 | Valve especially for controlling particulate solids flow An improved valve well-suited for controlling the flow of particulate solids comprises a valve body having a flow passageway comprising inlet and outlet passages extending transversely to a slide chamber. A plug member having a flow orifice, which is pref... | 05/12/1987 |
| 4660594 | Portable collapsible tank for storing liquid A portable collapsible tank for storing and insulating hot water or other liquid is contained by an elongate flexible and foldable outer sleeve which defines the outer perimeter of the tank and is formed with sufficient tensile strength to support the tan... | 04/28/1987 |
| 4647749 | Apparatus and method for weld cladding cylindrical objects Apparatus and method for depositing a corrosion resistant weld clad material upon a cylindrical surface of a workpiece such as the internal cylindrical conduit of a valve body (10). The apparatus includes a turntable (12) having a rotating platform (24) w... | 03/03/1987 |
