Abstract: A hydraulic fracturing ball sealer used in fracturing of shale formations. A preferred embodiment is constructed of a generally spherical core and a pair of hemispherical shells positioned about the core. The shells are secured to each other along an equatorial seam. The multilayer frac-ball provides a strong but machinable structure with a pliable outer surface that is corrosion resistant, has a specific gravity that allows it to float in the fracturing fluid, and is relatively easy and inexpensive to manufacture. The frac-ball of the present invention is a two piece metal and polymer design. A two-part embodiment comprises a polymer core with a metal case or shell. A layer of epoxy resin may be used to secure the shell to the core. Alternate embodiments include multiple layers of different materials, generally arranged concentrically within the spherical shape. The surface of the frac-ball may be smooth, scored, or serrated.

Abstract: A hydraulic fracturing ball sealer used in fracturing of shale formations. A preferred embodiment is constructed of a generally spherical core and a pair of hemispherical shells positioned about the core. The shells are secured to each other along an equatorial seam. The multilayer frac-ball provides a strong but machinable structure with a pliable outer surface that is corrosion resistant, has a specific gravity that allows it to float in the fracturing fluid, and is relatively easy and inexpensive to manufacture. The frac-ball of the present invention is a two piece metal and polymer design. A two-part embodiment comprises a polymer core with a metal case or shell. A layer of epoxy resin may be used to secure the shell to the core. Alternate embodiments include multiple layers of different materials, generally arranged concentrically within the spherical shape. The surface of the frac-ball may be smooth, scored, or serrated.

Abstract: Method and arrangement for providing a load carrier mountable on a carrying vehicle. The arrangement includes an elevating structure arranged between a base portion and a load supporting portion. The elevating structure is adapted to expand and contract between raised and lowered configurations. The elevating structure includes two substantially upright members, each of which is slidably moveable relative to the other for establishing the raised and lowered configurations. A fixing device is provided for releasably fixing the two sliding members one to the other. The fixing device includes a blocking member that is insertible in aligned receivers, one each of the aligned receivers being formed in each of the two sliding members for preventing expansion and contraction of the elevating structure. The fixing device further includes a take-up arrangement that is configured to press one of the two upright members against the other thereby forming a releasable friction fit therebetween.

Abstract: A seat cover includes a frame and cover. The frame includes a flexible member with a first end and a second end, a first connector configured to receive the first end of the flexible member, a second connector configured to receive the second end of the flexible member, and a support configured to receive the first connector and the second connector.

Abstract: Method and arrangement for providing a load carrier mountable on a carrying vehicle. The arrangement includes an elevating structure arranged between a base portion and a load supporting portion. The elevating structure is adapted to expand and contract between raised and lowered configurations. The elevating structure includes two substantially upright members, each of which is slidably moveable relative to the other for establishing the raised and lowered configurations. A fixing device is provided for releasably fixing the two sliding members one to the other. The fixing device includes a blocking member that is insertible in aligned receivers, one each of the aligned receivers being formed in each of the two sliding members for preventing expansion and contraction of the elevating structure. The fixing device further includes a take-up arrangement that is configured to press one of the two upright members against the other thereby forming a releasable friction fit therebetween.

Abstract: Method and arrangement for providing a load carrier mountable on a carrying vehicle. The arrangement includes an elevating structure arranged between a base portion and a load supporting portion. The elevating structure is adapted to expand and contract between raised and lowered configurations. The elevating structure includes two substantially upright members, each of which is slidably moveable relative to the other for establishing the raised and lowered configurations. A fixing device is provided for releasably fixing the two sliding members one to the other. The fixing device includes a blocking member that is insertible in aligned receivers, one each of the aligned receivers being formed in each of the two sliding members for preventing expansion and contraction of the elevating structure. The fixing device further includes a take-up arrangement that is configured to press one of the two upright members against the other thereby forming a releasable friction fit therebetween.

Abstract: The present invention relates to method and apparatus for making golf ball cores. The method includes using an inspection system during preform formation to measure the preform. The measurements are used to determine the measured preform volume and compare it to a standard preform volume. The method also includes using mold with pairs of self-aligning half-molds. The apparatus for inspecting the preforms comprises a non-contact measuring device, such as a camera. The self-aligning half-molds each include an upper surface with an angularly offset portion. When the offset portions mate during mold closure, the half-molds move with respect to one another.

Abstract: A method of orienting a spherical object comprising the steps of acquiring an image of a spherical object at an imaging station; analyzing the image with a first computer to determine an analysis; transferring the object from the imaging station to orienting stations using a transfer mechanism; and orienting the object to a predetermined orientation according to the analysis; wherein the orienting stations comprise first, second, and third stations each rotating the object about a single axis; the first, second, and third stations collectively orienting the object by rotation about alternately perpendicular axes. In one embodiment, at least one of the orienting stations is at least partially mounted onto the transfer mechanism. In another embodiment, the transfer mechanism is a compliant object carrier that is movable translationally and substantially immovable rotationally. In an alternate embodiment, the ball is orientated with a gimbaled mechanism. An object orienter is also disclosed.

Abstract: An apparatus supports one or more articles of various sizes on a vehicle surface during transport with a vehicle. The apparatus includes a substantially planar platform for supporting the articles, and one or more straps for securing the articles to the platform. The platform includes: a top slip-resistant surface for preventing the article from sliding along the slip-resistant top surface; a bottom slip-resistant surface for preventing the platform from sliding along the vehicle surface; a plurality of bearing members; a plurality of slots for selectively engaging the straps; one or more handles; and a recess defined within a bottom area of the platform containing the plurality of slots. The straps support the articles by engaging the platform through two or more of the slots, bearing against two or more of the bearing members and passing through the recess without contacting the vehicle surface.

Abstract: “Plug-in” fluid flow diverters are disclosed. Additionally disclosed is water purification equipment adapted to communicate with the diverters. Such equipment is especially (although not solely) useful in connection with circulating streams of water present in systems associated with swimming pools, hot tubs, and spas, as the circulating nature of the water permits more of its volume ultimately to be diverted into the equipment for purification. The diverters, furthermore, may have entrances oriented to receive fluid travelling in only one direction through a conduit and be keyed to one or more components of the equipment for purposes of identification, inventory control, or otherwise.