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A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 7527305 | Hose connector with adjustable ambient air inlets A hose connector with adjustable ambient air inlets includes a conduit section having a plurality of spaced-apart holes covered by an adjustable outer ring having a similar pattern of spaced-apart holes. Turning the outer ring relative to the conduit section permits... | 05/05/2009 |
| 7416395 | Sleeve for coupling a refrigerant pipe to a compressor container A sleeve connecting a refrigerant pipe to a sealed compressor container has a reduced outer dimension and an inner step that accommodates the refrigerant pipe. An end of the refrigerant pipe abuts the inner step to accurately locate the refrigerant pipe to permit th... | 08/26/2008 |
| 7410192 | Ribbed pipe clamp with sealing sleeve A pipe coupler for use in connecting a pair of automotive exhaust pipe ends each having a circumferential rib. The pipe coupler includes a ribbed band and internal split sealing sleeve along with a tightening mechanism for clamping the band and sleeve over the pipe ... | 08/12/2008 |
| 7381454 | Tubular product A tubular product has a tubular base layer, a tubular innermost layer made of plastic by continuous extrusion, and a tubular tie layer of foamed plastic between and adhered to the base layer and the innermost layer. The tie layer is made of melt processable adhesion... | 06/03/2008 |
| 7246778 | Releasable barb assembly The embodiments provide a barb assembly for use with a cable duct component to oppose removal of a cable duct section from the cable duct component. The barb assembly can comprise a releasable assembly for applying a force to a barb and, responsive to the applicatio... | 07/24/2007 |
| 7240930 | Quick-connect/quick-disconnect conduit connectors Connector for connecting a pair of tubular components together, such as a pair of exhaust conduits of a dryer or an exhaust conduit of a dryer to a dryer vent or wall-mounted vent sleeve, including a pair of generally semi-cylindrical members each having a first, co... | 07/10/2007 |
| 7232159 | Tube coupling A fluid coupling having an outer housing with an internal bore, an O-ring fitted within the bore, a spacer bushing fitted against the O-ring, a gripper ring fitted against the axially outer side of the spacer ring, the gripper ring having axially and radially inward... | 06/19/2007 |
| 7226022 | Cable duct coupler A cable duct coupler for coupling a first cable duct section to a second cable duct section without the need for tools, the cable duct coupler comprising a channel portion, a first outer guide element and a second outer guide element, a barb mount extending from at ... | 06/05/2007 |
| 7222886 | Hose clamping assembly A hose clamping assembly comprises a branched pipe having a plurality of projected stoppers thereon, each of the stoppers formed around an outer surface of each branch of the branched pipe and spaced apart a certain distance from each other, a hose connected to each... | 05/29/2007 |
| 7185921 | Hose fitment for disposable food container A hose fitment for the connection of disposable food containers to dispensing lines of food dispenser. This hose fitment is adapted to securely establish fluid connection between a hose and a food or beverage dispensing line. This fitment includes a body member havi... | 03/06/2007 |
| 6913294 | Coupling for coaxial connection of fluid conduits A coupling is designed for sealingly connecting two fluid conduits such as automotive fluid lines in axial end-to-end relationship. The conduits have respective telescopically interengaging male and female end sections and the coupling comprises a base member to be ... | 07/05/2005 |
| 6494501 | Pipe connector, pipe-connecting structure, and connecting method A pipe joint connecting a pipe using an anaerobic adhesive, which possesses a double pipe structure formed with an inner pipe fitting into the inner circumference side of the end of the pipe, and an outer pipe fitting into the outer circumference side of ... | 12/17/2002 |
| 6276727 | Slip-on compression coupling for thermoplastic pipe A mechanical pipe coupling for thermoplastic pipe, the coupling including an outer sleeve with cuff portions at opposite open ends and an internally directed flaring, the sleeve having a central circumferential ridge between the cuff portions, the couplin... | 08/21/2001 |
| 6213522 | Device for securing adjacent segments of fibrous glass duct work and the like and a system including said device A device and system for securing adjacent segments of duct work formed from fibrous glass duct board insulation and the like is disclosed. The device comprises a corner member having two legs disposed at approximately right angles, each of said legs havin... | 04/10/2001 |
| 6098727 | Electrically insulating gap subassembly for downhole electromagnetic transmission An electrically insulating gap subassembly for inclusion in a pipe string (30) comprising a pair of tubular members (90, 98) having an electrically insulating isolation subassembly (94) threadably disposed therebetween is disclosed. The electrically insul... | 08/08/2000 |
| 6022054 | Thin wall fiberglass pipe connectors A pipe coupling for two pipe ends having the same inner diameter includes a first pipe coupling joining the pipe ends. The first pipe coupling is formed from a section of pipe having approximately the same inner diameter as the pipe ends and is split long... | 02/08/2000 |
| 5909903 | Coupling structure for coupling two pipes For coupling first and second metal pipes, a coupling structure is provided which comprises a first diametrically angled end portion of the first metal pipe and a second diametrically enlarged end portion of the second metal pipe. The second enlarged end ... | 06/08/1999 |
| 5681225 | Golf club swing training apparatus The apparatus includes an annular member having a pivotal member pivotally coupled to the annular member to which an elongated elastic member may be attached with the other end of the elastic member attached to a fixed object. Two clamp members are provid... | 10/28/1997 |
| 5592974 | Fluid flow restrictor A restrictor for limiting the volume of fluid flowing from an automotive hose into a heat exchanging device in an automotive heating or air-conditioning system is disclosed. The restrictor includes a generally cylindrical, hollow body disposed in the hose... | 01/14/1997 |
| 5470112 | Adjustable coupling ring A coupling ring for joining circular sheet metal ducts has oppositely opening grooves for receiving meeting ends of the ducts, and is diametrically adjustable to accommodate variations in the duct diameters.... | 11/28/1995 |
| 5269572 | Apparatus and method for coupling elongated members A pair of elongated cylindrical members are constructed with first and second collars extending axially beyond their adjoining ends. The first and second collars have adjoining indentations and projections at their end edges which are adapted to interlock... | 12/14/1993 |
| 5184850 | Method of connecting pipes of plastics material of a double pipe system and a pipe connection made by the method A method of connecting pipes of plastics material of a double pipe system and a pipe connection made by the method. The inner pipes of the pipe system are connected to each other with a sleeve member by welding or gluing. Clamping jaws are used for holdin... | 02/09/1993 |
| 5143407 | Pipe coupling with copper sleeve engaging copper lined pipe An improved pipe coupling device comprising a cylindrical outer layer of plastic, such as polyvinyl chloride formed with a central inwardly-extending boss which coaxially supports a copper pipe extending therethrough and having recesses encircling said co... | 09/01/1992 |
| 5139288 | Coupling device for providing electrical and thermal insulation under high pressure, cryogenic conditions A coupling device (10) provides sealing members (24), (26), preferably Indium wire O-rings (72), (74), suitable for sealing engagement with an insulating member (28) under cryogenic, high-pressure conditions. Coupling device (10) is designed to couple a f... | 08/18/1992 |
| 5135267 | Connection fittings and combination thereof with conduits and method of assembly A conduit connection fitting includes a core member having an axial bore therethrough and two or more spigot portions, and a sleeve member encasing a central part of the core member. The spigot portions extend beyond the ends of the sleeve member which ma... | 08/04/1992 |
| 5129689 | Threaded tubular connection with outer threaded ring A pipe union device and method in which terminal ends of well casing, well production tubing or drill pipe are connected in fluid type fashion by stressing compressively a spacer disposed between terminal ends of adjacent lengths of tubing.... | 07/14/1992 |
| 4749217 | Pipe fittings A pipe fitting having an improved means of securing a polymeric pipe thereto, wherein the first part of the pipe fitting comprises a head, a tail extending downstream of the head, an annular ridge surrounding the tail downstream of the head, and a male th... | 06/07/1988 |
| 4746150 | Joint for joining together two pipe ends When joining together pipe-lines, in particular, by means of explosive welding, an outer support tool is generally used, together with an inner peripheral body (3) which is applied by means of explosives (5), to the inner surfaces of the pipes (1 and 2) t... | 05/24/1988 |
| 4718698 | Apparatus and method of forming fusion welded butt joint between thermoplastic pipe sections An apparatus and method for forming a fusion welded butt joint between thermoplastic pipe sections. Thermoplastic tubular insert sleeves having end flanges are inserted into the ends of the pipe sections with the flanges located in abutting relation. A co... | 01/12/1988 |
| 4641860 | Coupling for flexible tubing A coupling for fluidly connecting flexible tubing includes a rigid connector and an elastic retaining sleeve. The rigid connector has a main portion and a first and preferably second male end portions projecting therefrom with a fluid passage disposed wit... | 02/10/1987 |
| 4624485 | Insulating tubular conduit apparatus A concentric insulating tubular conduit member for use in forming a conduit string, such as a tubing string in a subterranean well, is disclosed. Each individual concentric conduit comprises an outer tubing and an outwardly flared inner tubing welded to t... | 11/25/1986 |
| 4621838 | Insert for insulated steam injection tubing An insert for insulating the area of the coupling two doublewalled tubing segments of an insulated steam injection tubing string. The insert is mounted to overlie both of a pair of adjacent tubing segment end portions radially inwardly thereof. In accorda... | 11/11/1986 |
| 4564201 | Method and apparatus for sealing a discontinuity in a tubular assembly A method of forming a seal over at a discontinuity in a tubular area e.g. a joint between two pipes comprises providing a sealing element around the area and clamping the element in position with a clamping element extending around the sealing element. Th... | 01/14/1986 |
| 4538837 | Anti-corrosion pipe apparatus An aluminum alloy pipe having a non-corrosible lining coating the interior surface thereof, and an annular sleeve formed of non-corrosible material to fit over and grip an end of the pipe, this sleeve being shaped to cover the end of the material forming ... | 09/03/1985 |
| 4519637 | Pipe coupling A repair coupling is herein disclosed which is particularly suited for use with fiber-reinforced thermosetting resin pipe. The coupling comprises a pair of inner and outer sleeves to be secured on respective end portions of a pair of pipe sections to be c... | 05/28/1985 |
| 4514244 | Plastic pipe elements and methods for making same A plastic pipe element comprises an inner one-piece liner of thermoplastic material. The liner is formed so as to include at least one cylindrical leg having a free outer end and inner end disposed intermediate opposite ends of the liner. At least one pip... | 04/30/1985 |
| 4508370 | Rigid duct with bendable elbow A rigid, molded fiberglass duct having an integral bendable elbow comprised of two sections of cured fiberglass securely bonded to a corrugated metal-foil sleeve. The method of manufacturing the rigid bendable duct is by sliding a corrugated metal-foil sl... | 04/02/1985 |
| 4496172 | Subsea wellhead connectors There is disclosed a remotely operable, subsea wellhead connector for connecting the lower end of one wellhead member to the upper end of another wellhead member which is mounted in an upright position beneath the water surface, such connector including a... | 01/29/1985 |
| 4491346 | Apparatus for releasably connecting tubular members in end-to-end relation There is disclosed apparatus for releasably connecting first and second tubular members in end-to-end relation including a split lock ring having first and second axially spaced locking teeth which are carried by the first member for radial movement toget... | 01/01/1985 |
| 4476602 | Portable electric scrubber A portable electric scrubber in which the drive shaft and gear assembly and drive motor are secured together in a fixed relationship by a one-piece gear case secured within a compartment defined between to halves of a housing. The output shaft includes in... | 10/16/1984 |
