Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 4150810 | Machine welded obturator The invention relates to machine welded obturators of generally spherical shape for equipping rotary plug valves. These obturators are composed of a central tube and an envelope formed by two hemispherical segments of pressed sheet metal which are truncat... | 04/24/1979 |
| 4142708 | Valve and seal There is disclosed herein a valve and seal assembly comprising a valve body having a movable core housed therein adapted to allow the flow of material through the valve to be interrupted, and means for sealing the core and body so as to prevent leakage. T... | 03/06/1979 |
| 4135544 | Balanced plug valve A tapered plug valve comprises a casing having a passageway therethrough for the flow of fluid and a tapered bore intersecting the passageway. A tapered plug is rotatably mounted in the tapered bore and is adapted to block the passageway when the valve is... | 01/23/1979 |
| 4126133 | Intracorporeal catheter improvement There is provided a catheter having a hub portion in which a rotatable intravenous receiving member is mounted. In one position the rotatable member provides a passageway for a needle passable through the rotating portion and the hub end and extending por... | 11/21/1978 |
| 4113228 | Rotary plug valve A rotary plug valve comprised of a valve body having a replaceable liner and valve plug disposed therein. The liner is formed of a pair of axially split complementary liner members, including an upstream liner member and a downstream liner member, having ... | 09/12/1978 |
| 4101113 | Stopcock with rotary and adjustable plug in the stopcock housing A stopcock with a plug which is rotary and adjustable in the housing. A fixedly mounted liner of flexible material with a smooth sliding surface is mounted in a rotary manner at a bottom part of the housing. A packing disk is clamped between inside and ou... | 07/18/1978 |
| 4076211 | Ball valve A ball valve having a valve body, a main flow passage therethrough, a lateral bore extending generally perpendicularly through the passage, and a unitary ball valve member received in the lateral bore. The ball valve member has a spherical ball portion wi... | 02/28/1978 |
| 4072291 | Rotary valve with spring biased valve member An improved rotary valve comprising a valve body having a flow passage extending therethrough and a rotary valve stem journaled in said valve body transversely intersecting the flow passage. The valve stem includes at least one spring biased spherical val... | 02/07/1978 |
| 4055324 | Plug valve assembly A novel plug valve assembly is described having improved leak-resistance under high pressures. It includes a housing with inlet and outlet ports and a cylindrical valve chamber. Cylindrical valve sealing members are slidably mounted in the ports, each sea... | 10/25/1977 |
| 4051866 | Valve positioning handle A valve positioning handle is for a plastic valve which is capable of being utilized in gas distribution pipes and includes a body and a fluid isolation member rotatably disposed therein. If the valve becomes jammed, it and/or the pipe are capable of bein... | 10/04/1977 |
| 4036470 | Cantilevered ball valve The valve body is in the form of a segmented ball section and is integrally formed on a rotatable spindle as a cantilevered extension of the spindle. The segmented ball section includes an annular seating surface on one side for seating and sealing engage... | 07/19/1977 |
| 4031918 | Rotary spool valve A fluid flow control valve has a rotary spool with one or more standard, circular O-rings held in stretched condition by shoulders on the spool so that instead of extending all the way around the circumference of the spool each O-ring extends only a part ... | 06/28/1977 |
| 4015816 | Rotary plug valve A rotary plug valve in which the plug has a special sealing means in its outer surface to contact the wall of the plug chamber in encircling relation to the inlet flow port of the valve body when the plug is in closed position, said sealing means includin... | 04/05/1977 |
| 4014512 | Tamperproof plug valve A spring loaded, tamperproof plug valve such as a pressure gas stop has the rotatable valve plug resiliently retained against removal from the valve body by two stacked, slit, frustoconical, transversely arched spring washers that have teeth which make a ... | 03/29/1977 |
| 4010930 | Two-way rotary plug valve A rotary plug valve having a plug member rotatable in a valve housing between an opened position and a closed position, the housing member having a valve seat therein with a first passage opening to the seat and a second passage opening to the seat, and s... | 03/08/1977 |
| 4006062 | Still extractor with novel stopcock means Extraction container for solvent extraction of materials, having vapor inlet and outlet tubes, a condenser fitted on the extraction container and a stopcock fitted on the inlet tube causing distributing solvent vapors in desired proportions between those ... | 02/01/1977 |
| 4003403 | Stopcock A stopcock is disclosed which comprises a body suitable for molding, having an axial bore, axially and angularly spaced apart inlet and outlet passageways through the body and intersecting the bore, and a stem rotatably mounted within the bore, the stem h... | 01/18/1977 |
| 3993099 | Plug valves A plug valve having radial ports has a spindle with a plastics sleeve biased by underlying O-rings into sealing contact against the surrounding valve body to subdivide the space between the sleeve and the bore and thereby define at least one discrete pass... | 11/23/1976 |
| 3991997 | Paper feed mechanism for offset printer An improved paper feed mechanism includes a vacuum manifold having a number of spaced, paper feeding suction tubes with each tube having a valve intermediate its ends. The valves permit respective tubes to be selectively placed in fluid communication with... | 11/16/1976 |
| 3991975 | Rotary plug valve with notched sealing ring groove A rotary plug valve having a plug member rotatable in a valve housing member between an open position and a closed position, the plug member carrying a sealing ring, such as an O-ring seal or the like, in a groove provided on its surface between its port ... | 11/16/1976 |
| 3985155 | Plug valves A plug valve having radial ports has a spindle comprising a mandrel having around it a plastics sleeve with integral upstanding ridges biased against the bore to form seals which subdivide the space between the sleeve and the bore and define the flow pass... | 10/12/1976 |
| 3985152 | Under fixture valve An under-fixture valve comprises an elongated body having an outer diameter corresponding to the pipes normally connected to an outlet water pipe so that the valve body may be threaded to the outlet water pipe and project from a wall structure. The wall s... | 10/12/1976 |
| 3974869 | Fluid flow control valve Fluid flow control valves such as plug valves or cocks have the plugs thereof supported and sealed in the valve housing by a rigid but somewhat elastic plastics bearing member which is preloaded and compressed from its free state condition and seeks to re... | 08/17/1976 |
| 3971402 | Rotary valve assembly An inverted, manually operable, cylindrical, inverted-cup-shaped valve element is turnable axially back and forth between an open position in which an aperture in said element's side wall registers with a fluid passage of a fixed central core of the valve... | 07/27/1976 |
| 3949967 | Off axis rotary valve An off-axis rotary valve especially suitable for high-temperature vacuum tight fluid switching. A valve cylinder with an off-center opening(s) therein is mounted between two end seals. The end seals engage the circumferential edges of the valve cylinder a... | 04/13/1976 |
| 3945603 | Valve particularly adapted for use in vacuum work This invention relates to a vacuum valve having a hollow body formed of a resilient material and a valve means securely positioned at the center of the valve body in a seat integral with the body. The body is divided into two parts, being connected to a v... | 03/23/1976 |
| 3943962 | Universal equipment for connecting pipe line favourably for adjusting variable angles A pipe joint that interconnects two pipe sections or bosses for relative rotational movement about an axis that is noncoincident with the axis of at least one of the bosses and preferably noncoincident with the axis of both of the bosses. A rotary valve m... | 03/16/1976 |
| 3931954 | Petcock An improved petcock for controlling the flow of a liquid from a container. The petcock includes a housing comprising an inlet and outlet passage joined at their inner ends by a frusto-conic valve chamber opening external of the housing through a circular ... | 01/13/1976 |
