Abstract: A moderately resilient, energy-absorbing practice golf ball and a process for manufacturing same are disclosed, the ball having a dense metal core surrounded with a thick layer of resilient material. To this, a fabric cover able to carry marking powder is bound. The practice ball leaves powder marks at its points of impact, and has a substantially reduced velocity upon rebound. The process of manufacturing the practice ball includes the steps of binding dense metal shot or granules together with resilient adhesive to form a core, wrapping uncured rubber strips into a thick layer around the core, pressing the surface of the layer to make it spherical; pressing a layer of textile fabric into the surface of the uncured rubber, curing the ball with elevated temperature and pressure to fuse its layers together and abrading the ball's fabric surface to raise a powder-carrying nap.

Abstract: The golf tee mat of the present invention comprises a sliding pad mounted in and surrounded by a U-shaped stance pad. Said stance pad accommodates a practicing golfer's planted feet and comprises a stiff, slippery, base sheet overlain and partially covered by a U-shaped, artificial turf-covered support layer. The sliding pad has a stiff, flexible, slippery base overlain with a resilient cushion and a layer of artificial turf; it nests resiliently in the space left uncovered between the arms of the U-shaped support layer. The sliding pad is in tongue and groove relation with the stance pad over short length near its exposed end, the rest of the stance pad's length being free to propagate a wave ahead of a swinging golf club's head to simulate the feel of taking a divot.The mat further includes a cavity containing a mass of pliable matter, such as clay or putty, into which a tee may be inserted for practicing drives with wood clubs.

Abstract: A golf swing analyzer is disclosed having, in combination, a teeing area with a teeing mat, foot planting mat and ball tee, a rigid, upstanding target board placed a short distance from the teeting area and rebound board disposed horizontally in front of the target board for receiving the rebound of a practice ball off the target board. This swing analyzer is used by driving a powder carrying, resilient, yet energy-absorbing, practice ball against the target board from the tee. The accuracy of the shot and the spin put on the ball are determined by analysis of the powder marks left on the target and rebound boards.

Abstract: A moderately resilient, energy-absorbing practice golf ball is disclosed having a dense metal-containing core surrounded with a thick layer of resilient material. To this, a fabric cover able to carry a marking powder is bound. This practice ball leaves powder marks at its points of impact, and has a substantially reduced velocity upon rebound.

Abstract: Bell and spigot pipes are joined coaxially with a compressed gasket and are largely surrounded by a layer of insulation. A sleeve surrounds the joint so made and is sealed to the respective pipes and is filled with a foam insulator.

Abstract: A machine for wrapping sheet material around a circular-cylindrical pipe extending longitudinally and horizontally and supported along the bottom on a longitudinally and horizontally extending supporting roller or rollers has a table supporting the sheet material to extend between the bottom of the pipe and the supporting roller or rollers. The pipe is rotated by a motor-driven soft roller frictionally engaging the pipe and any sheet material around the pipe near one end and moving with the pipe away from the support roller or rollers as the wrapping material increases the diameter of the wrapped pipe.

Abstract: A practice ball for use in simulated golf driving has a claylike, energy-absorbing, deformable core normally substantially spherical, surrounded by an open-work or knit fabric carrying a powder readily dislodged upon impact of said pellet with a hard surface.

Abstract: A method of forming a tubular container such as a pipe or a tank includes providing a drum rotatable about an axis with an axially split liner in the drum. The drum and the liner are rotated together about the axis, and a time-setting plastic and reinforcing roving are discharged against the inside of the liner. When the plastic has at least partially set, the liner, plastic and roving are removed from the drum. After further plastic setting, if desired, the liner is removed from the plastic and roving for reuse. Preferably the split in the liner is covered with tape before rotation and is removed thereafter.

Abstract: A process for forming a tubular member includes rotating a tubular form about a central axis. The form is provided with an interior coating of time-setting, liquid material. A number of lengths or strips of roving, preferably of fiber glass, are introduced serially into the rotating tubular form in a direction substantially chordally of the tubular form so that each roving strip tends to be embedded approximately circumferentially by centrifugal force into the liquid material. The roving strips are approximately as long as the diameter of the tubular form and in effect make a helix. The material hardens with the roving embedded therein. The hardened material and roving are then removed as a tubular member from the stationary form. The product of the invention is a member of tubular shape comprised of a helix formed of substantially circumferentially extending lengths of fiber glass roving, each length being approximately the diameter of the tube, all embedded in a solid matrix of time-setting material.

Abstract: An impact barrier designed specially to be installed at the rear of a vehicle such as a truck, has a generally rectangular, stiff enclosure open at the bottom. There is a support connected between the enclosure and the back of the vehicle so that the enclosure projects rearwardly behind the vehicle at about the expected area of impact of a following collision. Within the enclosure is a plurality of energy dissipating elements or cells arranged within the enclosure in substantial abutment with each other and with the enclosure sides. The dissipating elements are individually made of a frangible or powdering material. The enclosure support preferably includes a snubber for damping out vertical oscillations in the device.

Abstract: An impact barrier and restraint is provided for use on a longitudinally extending roadway. There are several barrier mechanisms, each including a base or diaphragm extending transversely of the roadway and related to the roadway by releasable anchors. In one version the diaphragm includes overlapping, transversely extending plates arranged to move transversely of the base. There are lateral buffer beams diverging and overlapping and secured to the diaphragms and to each other for telescoping movement. Between the diaphragms there are energy absorbing cells supported on the base and subject to disintegration upon impact of a vehicle or the like against the impact barrier, whether head-on or from the sides.

Abstract: A process of forming a tubular member includes rotating a tubular form about a central axis. The form is provided with an interior coating of time-setting, liquid material. A number of lengths or strips of roving, preferably of fiber glass, are introduced serially into the rotating tubular form in a direction substantially chordally of the tubular form so that each roving strip tends to be embedded approximately circumferentially by centrifugal force into the liquid material. The roving strips are approximately as long as the diameter of the tubular form and in effect make a helix. The material hardens with the roving embedded therein. The hardened material and roving are then removed as a tubular member from the stationary form. The product of the invention is a member of tubular shape comprised of a helix formed of substantially circumferentially extending lengths of fiber glass roving, each length being approximately the diameter of the tube, all embedded in a solid matrix of time-setting material.

Abstract: A roadway impact attenuator adapted to be installed between lanes on a highway or in advance of a barrier on the highway includes a number of substantially identical units each of which has a framework slidably resting on the ground or pavement, and spaced from the barrier or from a similar framework. An energy converting means is disposed between the barrier and the framework. The framework is related to the ground by a ground anchor secured thereto and releasably connected to the framework. Additionally, overlapped side panels are mounted generally horizontally along the sides of the framework, being secured thereto and being secured to similar panels on other frameworks in a telescoping relationship.