Abstract: A hose construction and methods of making the same are provided, the hose construction comprising a tubular hose and a coupling secured to one end of the tubular hose, the inner peripheral surface of the tubular hose comprising an inner corrugated hose made of polymeric material and having inwardly convex projections with recesses therebetween and extending from one end of the tubular hose to the other end thereof, the coupling having an insert disposed in one end of the tubular hose and being radially outwardly expanded into sealing relation with the inner corrugated hose, the insert having an outer peripheral surface defined by a plurality of outwardly convex projections with recesses therebetween, the projections of the insert being respectively received in the recesses of the inner hose and the projections of the inner hose being respectively received in the recesses of the insert whereby the interior of the tubular hose is substantially sealed to the interior of the coupling, the inner peripheral surface

Abstract: A hose construction for conveying water under pressure, a stem therefor and methods of making the same are provided, the hose construction comprising a flexible tubular hose having opposed ends, a metallic stem having opposed ends and having one of the ends thereof disposed in one of the ends of the hose, and a metallic tubular ferrule telescoped on the one end of the hose and being radially inwardly crimped toward the stem to compress the end of the hose between the ferrule and the stem, the one end of the stem having a plurality of annular spaced apart projections thereon and respectively having external peripheral surfaces embedded into the one end of the hose, the stem having an opening passing therethrough and defining an internal peripheral surface thereof, the one end of the stem terminating at an end edge thereof that is defined by the internal peripheral surface joining with the external peripheral surface of an adjacent annular projection the end edge defining a relatively large rounded end part on

Abstract: A fuel dispensing system and method of making the same are provided, the system comprising a storage tank for the fuel and being disposed in the ground, a dispensing pump disposed above the ground, a first flexible hose construction having an inner surface and being disposed in the ground for conveying fuel from the tank to the pump, and a second flexible hose construction having opposed ends one of which is interconnected to the pump, the second hose construction being disposed above the ground for dispensing fuel from the pump into a fuel container of a transportation vehicle or the like through a nozzle interconnected to the other of the ends thereof, the second hose construction having electrical conductor structure extending therealong for dissipating static electricity from the nozzle to the pump, the first hole construction having leak detection structure for detecting leakage of the fuel therein through the inner surface thereof and for providing an electrical conductor structure therealong for dissip

Abstract: A hose assembly and method of making the same are provided, the hose assembly having a first fluid passage therein for conveying a volatile liquid in one direction to a container and a second fluid passage therein for returning the vapors of the volatile liquid from the container, the assembly comprising a flexible inner hose having an outer peripheral surface and defining the first fluid passage therein, and a flexible outer hose having an inner peripheral surface and being disposed around the inner hose, the inner peripheral surface of the outer hose and the outer peripheral surface of the inner hose defining the second fluid passage therebetween, the inner hose having a substantially straight Venturi section therein that tends to remove liquid from a certain area of the second fluid passage, the inner hose having adjacent intermediate ends, the Venturi section having opposed ends respectively interconnected to the ends of the inner hose to provide the first fluid passage therewith, the ends of the inner ho

Abstract: A flexible hose construction and method of making the same are provided, the flexible hose construction comprising an inner corrugated hose made of polymeric material and having a plurality of outwardly convex projections with recesses therebetween and extending from one end thereof to the other end thereof, an outer sleeve of reinforcing material disposed in telescoping relation on the inner hose, and a tube of polymeric material disposed between the sleeve of reinforcing material and the inner hose and extending in a generally straight-line manner from projection to projection of the inner hose so as to tend to prevent the sleeve of reinforcing material from entering into the recesses of the inner hose an amount that would end to substantially reduce the flexibility characteristics of the inner hose.

Abstract: An elastomeric composition having improved adhesion to metal reinforcement is disclosed, said elastomeric composition comprising an elastomer containing, an adhesion promoting amount of a polysulfide having the formulaR--S.sub.(m) --R'where m is an integer of from about 2 to 6; R and R' are the same or different and are ##STR1## R" is an alkyl group of from about 1 to 4 carbon atoms; and R'" is an alkyl group of from about 1 to 4 carbon atoms or an aryl group.

Abstract: A tensioner for a power transmission belt that is adapted to be operated in an endless path and a method of making the tensioner is provided, the tensioner comprising a support unit for being fixed relative to the belt, a belt engaging unit carried by the support unit and being movable relative thereto, a coiled torsion spring having a first end operatively interconnected to the support unit and a second end operatively interconnected to the belt engaging unit for urging the belt engaging unit relative to the support unit and against the belt with a force to tension the belt, the spring having a certain torque when the belt engaging unit is disposed at a certain position relative to the support unit, the tensioner having changeable structure holding one of the ends in an adjusted position relative to its respective operatively interconnected unit so as to provide for the certain torque of the spring when the belt engaging unit is disposed at the certain position relative to the support unit.

Abstract: A hose construction, coupling unit and system therefor and methods of making the same are provided, the hose construction comprising a flexible hose having opposed ends, a tubular member having opposed ends one end of which is carried by one of the ends of the hose and other end of which extends outboard of the one end of the hose, and an annular coupling unit rotatably carried on the other end of the tubular member outboard of the one end of the hose, the coupling unit having an externally threaded portion for threadedly connecting with an internally threaded coupling device, the coupling unit having an annular portion provided with a tool gripping external peripheral surface for rotating the coupling unit on the tubular member in order to threadedly interconnect the threaded portion with the coupling device, the annular portion being a part that is separate from the threaded portion so as to be adapted to be rotated relative thereto to tend to prevent unthreading of the threaded portion from the coupling de

Abstract: A vacuum cleaner hose construction and method of making the same are provided, the vacuum cleaner hose construction comprising an elongated vacuum hose having an electrical conductor extending therealong and being provided with an end portion, and an electrical connector carried by the hose and being fixed to the end portion, the connector having a pair of spaced apart knife-like portions each being provided with opposed edges defining sides of a slot therein that has an open end and a closed end, the knife-like portions of the connector having the open ends of the slots thereof facing in the same direction and being interconnected together at one end thereof to an intermediate part of the connector whereby the portions and the part define a U-shaped configuration that has a bight facing in the same direction as the open end of the slots, the end portion being disposed in the slots of the connector and being wedged between the opposed edges thereof for providing electrical connection therebetween, the connect

Abstract: A hose assembly and method of making the same are provided, the hose assembly having a first fluid passage therein for respectively conveying a volatile liquid in one direction to a container and a second fluid passage therein for returning the vapors of the volatile liquid from the container, the assembly comprising a flexible inner hose having an outer peripheral surface and defining the first fluid passage therein, and a flexible outer hose having an inner peripheral surface and being disposed around the inner hose, the inner peripheral surface of the outer hose and the outer peripheral surface of the inner hose defining the second fluid passage therebetween, the inner hose having a Venturi therein that tends to remove liquid from a certain area of the second fluid passage, the outer hose having wire reinforcing therein to tend to prevent inward crushing of the outer hose in a manner to damage the Venturi.

Abstract: A device is provided for crimping a coupling on the end of a hose. The device has a die assembly for holding the hose and coupling spaced apart from and in axial alignment with a crimping mechanism comprised of a hydraulic cylinder and a pusher. The cylinder has an internal stop. A fluid operated actuator mechanism moves the crimping mechanism axially downward to engage the die assembly. The device has an adjusting mechanism for adjusting the crimping mechanism in a predetermined relationship to the die assembly. The crimping mechanism and the adjusting mechanism cooperate so that when the crimping mechanism engages the internal stop, the coupling is crimped to the hose end in accordance with the predetermined relationship. The adjusting mechanism contains an angular scale and a linear scale both with marked divisions. The adjusting mechanism provides for easy recalibration of the device.

Abstract: A belt tensioner and method of making the same are provided, the tensioner comprising a support for being fixed relative to a belt, a belt engaging arm carried by the support and being movable relative thereto, a spring operatively associated with the support and the belt engaging arm for urging the belt engaging arm relative to the support and against the belt with a force to tension the belt, the support comprising a shaft having a longitudinal axis, the belt engaging arm being rotatably mounted on the shaft, the arm having a bearing surface angled relative to the axis and the support having a bearing surface angled relative to the axis and facing the bearing surface of the arm, and a bushing disposed between the bearing surfaces and in engagement therewith to facilitate movement therebetween and to tend to prevent cocking of the arm on the shaft when the belt engaging arm is tensioning the belt.

Abstract: A breakaway coupling, a conduit system utilizing the coupling and methods of making the same are provided, the breakaway coupling being adapted to be incorporated into a conduit system and comprising a pair of tubular coupling members each having opposed ends one of which is adapted to be interconnected to a part of the conduit system and the other of which is held in sealing and coupling engagement with the other end of the other coupling member until uncoupled therefrom by a certain axial force being created therebetween, the breakaway coupling having a frangible unit holding the coupling members in their coupled engagement until the certain axial force breaks the frangible unit to thereby uncouple the coupling members, the frangible unit comprising a tubular sleeve unit having opposed ends and an annular frangible section intermediate the ends of the sleeve unit that breaks in an annular manner when the certain axial force is applied between the coupling members.

Abstract: An endless power transmission belt construction and method of making the same are provided, the belt construction having opposed side edges and having an inner surface defining a plurality of longitudinally disposed and alternately spaced apart projections and grooves for meshing with a ribbed surface of a rotatable pulley or the like and defining a plurality of transversely disposed and alternately spaced apart projections and grooves that respectively extend between and to the opposed side edges, the longitudinal spacings between the transverse grooves or/and the depths of the transverse grooves being staggered so as to tend to reduce noise during normal operation of the belt construction with the pulley or the like.

Abstract: A hose assembly and method of making the same are provided, the hose assembly having a first fluid passage arrangement therein for conveying a volatile liquid in one direction to a container and a second fluid passage arrangement therein for returning the vapors of the volatile liquid from the container, the assembly comprising a flexible inner hose unit having an outer peripheral surface and defining the first fluid passage arrangement therein, and a flexible outer hose unit having an inner peripheral surface and being disposed around the inner hose unit, the inner peripheral surface of the outer hose unit and the outer peripheral surface of the inner hose unit defining the second fluid passage arrangement therebetween, the inner hose unit having a Venturi section therein that tends to remove liquid from a certain area of the second fluid passage arrangement, the inner hose unit having adjacent intermediate ends, the Venturi section having opposed ends respectively interconnected to the ends of the inner hos

Abstract: A branched hose construction, a T-connector therefor and methods of making the same are provided. The branched hose construction comprising a T-connector having a body portion provided with a pair of substantially oppositely directed legs extending therefrom and an outwardly directed branch leg extending therefrom intermediate the pair of legs, and three tubular hoses respectively telescoped onto the legs to be disposed in fluid communication with each other through the T-connector, the body portion of the T-connector having an annular shoulder adjacent each leg thereof against which an annular end surface of its respective hose abuts and which is of a size that causes the external peripheral surface of that respective hose to substantially mate with and thereby be substantially flush with the external peripheral surface of the body portion that is adjacent that respective hose.

Abstract: A hose construction, coupling therefor and methods of making the same are provided, the hose construction comprising a tubular hose and a coupling secured to one end of the tubular hose, the inner peripheral surface of the tubular hose comprising an inner corrugated hose made of polymeric material and having inwardly convex projections with recesses therebetween and extending from one end of the tubular hose to the other end thereof, the coupling having an insert disposed in the one end of the tubular hose and being radially outwardly expanded into sealing relation with the inner corrugated hose, the insert having an outer peripheral surface defined by a plurality of outwardly convex projections with recesses therebetween, the projections of the insert being respectively received in the recesses of the inner hose and the projections of the inner hose being respectively received in the recesses of the insert whereby the interior of the tubular hose is substantially sealed to the interior of the coupling.

Abstract: A belt tensioner and method of making the same are provided, the tensioner comprising a support for being fixed relative to a belt, a belt engaging unit carried by the support and being movable relative thereto, a spring operatively associated with the support and the belt engaging unit for urging the belt engaging unit relative to the support and against the belt with a force to tension the belt, and a frictional dampening unit operatively associated with the support and the belt engaging unit to dampen the movement of the belt engaging unit relative to the support, the dampening unit comprising a pair of frictionally engaging first and second parts with the first part comprising an annular pad of friction material that is coaxially disposed and axially movable on a shaft of the support relative to the second part, and a second spring urging the first part against the second part with a certain spring force, the first part of the dampening unit having a guide thereon, one of the support and the belt engaging

Abstract: A belt tensioner and method of making the same are provided, the tensioner comprising a support for being fixed relative to a belt, a belt engaging unit carried by the support and being movable relative thereto, a spring operatively associated with the support and the belt engaging unit for urging the belt engaging unit relative to the support and against the belt with the force to tension the belt, the support comprising a housing containing the spring and an arm plate that is interconnected to the housing by a shaft of the support, the belt engaging unit comprising an arm rotatably mounted on the shaft and having a portion disposed intermediate the arm plate and the housing so as to be rotatable thereto, a bushing disposed between the portion of the arm and the arm plate to facilitate movement therebetween, the arm plate having an extension extending around the portion of the arm and being operatively interconnected to the housing to tend to prevent cocking of the arm on the shaft when the belt engaging uni