Abstract: A power transmission belt having a belt body defining a tension section and a compression section and having an inside surface, an outside surface, and laterally spaced side surfaces. A canvas layer is provided on at least one of the inside, outside, and side surfaces and has a first surface abutting to the belt body and a second surface that is exposed with the canvas layer on the belt body. The canvas has ends joined by thread to produce an endless layer. A first part of the thread is exposed on the second surface of the canvas layer and is at least one of a) a twine of natural fiber and b) multi-filament twine of synthetic fibers. A second part of the thread that is exposed at the first surface of the canvas layer is a mono-filament of synthetic fiber.

Abstract: A plant support device, for supporting and watering and fertilizing a plurality of plants, has an octagonal frame. The octagonal frame has eight hollow tubular segments. The eight hollow tubular segments are sequentially disposed end to end to form an octagonal conduit that has eight legs. Each one of the eight legs connect to, extend downward at a diagonal angle and extend away from one of the eight hollow tubular segments. Each of the eight legs include a hollow tubular leg member enclosing a leg channel communicating with the octagonal conduit. Each of the eight legs have at least one aperture disposed on a downward distal end communicating with the leg channel. There is a feeder conduit that communicates with the octagonal conduit. The feeder conduit has a feeder tube, a pressurized fluid fitting for connecting the feeder tube to a pressurized fluid source and a fertilizer introduction mechanism for introducing a fertilizer into the feeder tube.

Abstract: Resistance to tooth chipping in toothed belt in which rubber teeth are covered by a tooth cloth, is improved by providing for residual elongation of the tooth cloth so that it does not float or separate from the rubber teeth when tooth-deforming forces are applied, and by providing the tooth cloth with sufficient breaking strength so that the product of its breaking strength and its elongation are at least equal to a specified value.

Abstract: Directional multi-blade boring heads (1000, 1050) are disclosed which have first and second blades (1030, 1032) which each define a deflecting surface (1036, 1038) for deflecting the boring head when the head is advanced without rotation. At least one intermediate blade (1034) extends between the deflecting surfaces in a three blade design. In a four blade design, a second intermediate blade (1042) extends on the side opposite the first intermediate blade (1034). The boring head is particularly effective in drilling a straight borehole through a variety of soil conditions when the boring head is simultaneously rotated and advanced along the direction of boring.

Abstract: Disclosed is a metallic block for the detection of a force operating on a metallic V-belt. The metallic V-belt includes endless belt-like supporting straps and a multiplicity of metallic blocks supported along the straps. The V-belt passes around a driving pulley and a driven pulley. At least one of the multiplicity of metallic blocks comprises a notch formed in a part thereof, and a strain gauge attached to the notch. The strain gauge is intended to detect an external force applied to the metallic block. The force operating on the metallic V-belt is detected based on thus detected external force.

Abstract: A belt tensioning system, a belt tensioner therefor and methods of making the same are provided, the belt tensioning system comprising a tensioner arm pivotally mounted to a support, and a wound coiled spring having opposed ends one of which is operatively interconnected to an abutment of the support and the other of which is operatively interconnected to the arm, the arm having a shoulder for being engaged by the one of the opposed ends of the wound coiled spring so as to permit removal of the arm and the wound coiled spring as a self-contained unit from the support when the arm is pivoted to a certain position where the shoulder of the arm engages the one end of the spring and effectively moves the one end of the wound coiled spring out of contact with the abutment of the support, the wound coiled spring comprising a helical spring having the opposed ends thereof comprising an inner end and an outer end, the one end of the wound coiled spring comprising the outer end thereof.

Abstract: A whipstock assembly which includes a guide section and a setting section, wherein the setting section is configured to facilitate slight rotation of said setting section when the whipstock is set within a well, which rotation urges the guide section securely against the sidewall of the wellbore. Setting section includes a surface which will serve as a fulcrum, and a radially moveable element which serves to apply a force to one side of the whipstock, allowing the whipstock assembly to move as a lever, wherein the guide section is caused to meet the wellbore sidewall.

Abstract: A surface paving apparatus (10) and a method for using the apparatus is disclosed herein. The apparatus is comprised of a mesh material (12) having parallel ribs (14) attached, laid upon a surface to be paved. A paving material (16) with grooves (24) cut into its underside is then placed upon the mesh material (12) such that the ribs (14) on the mesh material (12) frictionally engage the grooves (24) on the paving material (16). The frictional engagement between the grooves (24) and ribs (14) is stable enough to render the paving surface laterally immovable from any direction. The surface paving apparatus (10) can also be disassembled and moved, should this be desired.

Abstract: A control system for an automatic transmission of an automotive vehicle is provided. This control system includes a forward speed holding valve which is arranged in a hydraulic line communicating between a manual selector valve and a reverse frictional element such as a low and reverse brake, and has a first valve position which establishes fluid communication between the manual selector valve and the reverse frictional element to supply the hydraulic pressure from the manual selector valve to the reverse frictional element and a second valve position which blocks the fluid communication therebetween. When a selector lever is shifted to a reverse position while a vehicle is parked, the forward speed holding valve is controlled to assume the first valve position to engage the reverse frictional element.

Abstract: A sand screen structure used to filter particulate matter from formation fluid entering a well bore is assembled from a plurality of generally tubular filter sections that may be axially snapped together in a manner facilitating the simultaneous interconnection of circumferentially spaced series of axially extending shunt tubes secured to and passing internally through each of the filter sections. By utilizing snap-fit interconnections between the filter sections, instead of conventional threaded connections, the assembly of the overall sand screen structure is made substantially easier and quicker, and the lengths of the blank, nonfiltering portions of the sand screen structure between its individual filter sections are substantially reduced. In an alternate embodiment of the sand screen structure the shunt tubes are secured within external side surface recesses of the filter section bodies.

Abstract: A drive system for driving an engine auxiliary equipment has a first power transfer device for transferring an output torque of the crankshaft to an interim shaft at all time and a second power transfer device comprising a crank pulley mounted for relative rotation on the crankshaft, an interim pulley mounted for relative rotation on the interim shaft and an input pulley related to the auxiliary equipment all of which pulleys are operationally coupled by a belt so as to transfer an output torque of the crankshaft to the auxiliary equipment. A first clutch is disposed between the crankshaft and crank pulley so as to connect and disconnect a transfer of power between the crankshaft and crank pulley. A second clutch is disposed between the interim shaft and interim pulley so as to connect and disconnect a transfer of power between the interim shaft and interim pulley.

Abstract: This invention relates to a wire line core barrel inner tube assembly capable of travelling longitudinally within a drill string toward and away from a drill bit carried on the lower end of the string, the drill string having an annular landing shoulder therein. The inner tube assembly includes an elongated body having an annular landing shoulder adapted to co-operate with and seat on the landing shoulder of the drill string when in use. The body has a valve chamber defined therein and inlet and outlet ports leading from the valve chamber to the exterior of the body on opposite sides of the landing shoulder. These define a by-pass passage through which drilling liquid passing along the drill string must flow on its way toward the bit when the landing shoulder of said body is seated on the landing shoulder of the drill string. The valve chamber has a valve seat therein and a valve closure is located within the valve chamber.

Abstract: A prepack well screen assembly for separating particulate material from formation fluid has inner and outer screens concentrically mounted in radially spaced relation around a perforated mandrel, thereby defining a prepack annulus in which a plurality of spherical plastic members are disposed. The concentric inner screen includes longitudinally extending rib wires spaced circumferentially around the mandrel, and a screen wire wrapped externally about the rib wires in a longitudinally spaced pattern to define spaced screen apertures for conducting formation fluids through the inner screen. The outer screen is a cylindrical fluid-porous, particulate-restricting member which is radially spaced from the inner screen to form the prepack annulus. The particulate-restricting member includes rib wires which are spaced circumferentially around the inner screen within the prepack annulus, and an outer screen wire wrapped externally about the rib wires to define the annulus.

Abstract: A truck fitted with a rear loading compactor in combination with a system of equipment facilitates the picking up of leaves from City streets. Compaction of the leaves allows more carrying capacity and fewer trips to the dump thus improving efficiency. The leaves are raked into the gutters by property owners. A two-man operation, the truck driver operates a sweep mechanism from the cab of the truck. The driver lowers the sweep and as he drives forward the leaves are windrowed allowing the truck's wheels to straddle the row. As the truck moves the row emerges from under the rear of the compactor and is loaded by one of three different types of loaders; a belt loader, a drum loader or a scoop loader. Each type has its own particular attributes. The second operator rides a side platform and raises and lowers the loader from operating position to running position. The running position is used when hunting new leaf piles or taking a load to the City's compost.

Abstract: A vertical cased well penetrates two or more hydrocarbon bearing formations. A deviated well includes a horizontal drain hole extending a substantial distance into at least one of the formations. A production string is cemented in the horizontal drain hole and is cut off inside the vertical cased well. Perforations through the vertical cased well communicate the well with some or all of the formations. A production assembly in the vertical cased well includes a series of external casing packers isolating the hydrocarbon bearing formations. Wire wrapped port collars between the external casing packers controls flow into the production assembly and upwardly through the well. A resin coated sand may be plated in the annulus between the production assembly and the vertical casing to control the production of formation solids.

Abstract: According to the invention, the tubular preform is radially deformable between a longitudinally folded state and substantially cylindrical unfolded state to form a length of rigid tube in situ. The preform comprises a flexible and watertight inner envelope (6) whose peripheral extent is equal to the internal extent of the length of tube, and, formed on the outside of said inner envelope, reinforcement (2) made of filamentary structure comprising a plurality of fibers impregnated with a settable resin, including fibers (3) oriented mainly in the peripheral direction of the preform, each of these fibers (3) extending over more than one turn and co-operating with adjacent fibers by making contact therewith such that adjacent fibers can slide over one another while the preform is in any state other than its unfolded state where, under internal pressure, the fibers are locked together by the friction between them due to a capstan effect.

Abstract: A method and apparatus for measuring fluid flow rates, reservoir deliverability and/or the absolute open flow (AOF) potential of a subterranean formation penetrated by a wellbore. The present invention can be described as a formation fluid flow rate test tool which is conveyed and operated on a wireline logging cable. The down hole test tool comprises an arrangement of inflatable packers to isolate an interval and a pump which extracts fluid from the formation through an inlet below the upper most packer. The method allows for sequentially increasing or decreasing the flow rates and measuring the corresponding pressure responses. From this data, the reservoir flow characteristics, properties and deliverability can be accurately calculated, which was not previously permitted with other known wireline conveyed sampling and testing tools. Additionally, the present invention allows for the reservoir parameters to be obtained under dynamic conditions, emulating a deliverability test.

Abstract: A mulch plate for mounting over the chute outlet of existing mowers to contain mower clippings so that said clippings may be drawn back under the mower for recutting by the circulation of air induced by covering the mower chute with the mulch plate.

Abstract: A sheave is provided with a compliant contact surface such that the sheave is suitable for use with a leaf chain in applications in which the leaf chain is subjected to more than simply a straight tensile pull. Since the sheave contact surface is compliant, any chain leaves that protrude inwardly against the sheave will embed themselves, thus allowing any non-protruding leaf edges to come into contact with the sheave and share the load. In a preferred embodiment, compliancy of the contact surface is obtained by providing a plurality of closely spaced parallel grooves on at least those parts of the contact surface that contact the chain.

Abstract: A rock bolt system comprises an inner part (1) disposed within an outer part (10). The inner part comprises an elongated tube having an axial depression (2) and an internal pressure fluid receiving chamber (4) which is closed at both of its ends. A fluid inlet communicates with the fluid receiving chamber. The outer part (10) comprises an elongated tube having a longitudinal slot (12), which slot extends at least part way along the length of the outer part tube. In use, the rock bolt system is placed in an oversized borehole (20) and pressurized fluid applied to the fluid receiving chamber. This causes the device to expand laterally and engage the walls of the borehole.