Abstract: A golfer's aid wherein an elongated support member having a cap at its upper end is held against the grip of a golf club with the cap engaging the upper end of the grip. A single adjustable link extends from the cap at substantially a right angle to the elongated support and terminates at an arm pad which positions the golfer's lower leading arm during pitching and chipping shots.

Abstract: An earth-boring bit is provided with three cutters, two of the three cutters are provided with heel disk cutting elements defined by a pair of generally oppositely facing disk surfaces that generally continuously converge to define a circumferential heel disk crest. One of the two cutters having heel disk elements is further provided with an inner disk cutting element.

Abstract: An earth boring bit of the type having at least one rotatable cutter on a bearing shaft, a hydrostatic pressure compensator to balance the pressure of the lubricant with the pressure of the drilling fluid in the borehole, a metal face seal assembly of the type that enables movement of the seal to compensate for dynamic pressure changes in the lubricant as the cone moves on the bearing shaft, and a protuberance extending from a metal ring of the seal assembly into an aperture in the body of the bit adjacent the shaft with both axial and radial clearances sufficient to enable compensating movements of the seal assembly.

Abstract: A cutting wheel for use in a stump-grinding apparatus that has a reversible disk having an outer diameter. The disk has a generally noncircular hole through the center thereof to register with a correspondingly generally noncircular shaft for transmission of torque and rotation from the shaft to the disk. At least one cutting tooth having a leading cutting edge and a trailing cutting edge is secured to the outer diameter of the disk. The reversible disk may be removed from the generally noncircular shaft and subsequently reversed and replaced on the shaft, wherein the trailing cutting edge is transposed with the leading cutting edge.

Abstract: A fluid end for use in high-pressure, reciprocating, fluid pumps has a cylinder with a bore therethrough in which a plunger reciprocates. A valve body is disposed at one end of the bore and includes suction valve seat and a discharge valve seat, which are substantially coaxial with the axis of the bore in the cylinder. The suction and discharge valves include elastomeric, abrasion-resistant seal members. The valve body is provided with at least one fluid flow passage positioned about the periphery of the suction valve seat to permit purging of entrapped gas from the pressure chamber defined in the cylinder bore between the plunger and the valve body. In a preferred embodiment of the present invention the suction and discharge valves are identical and interchangeable, and the valves are provided with urethane seal members to increase the abrasion resistance of the valves.

Abstract: An improved method for the repair of fiberglass boat hulls by replicating surface textures on the boat hulls is disclosed. A laminar, dimensionally stable, flexible mold is formed having a negative impression of the surface texture to be replicated formed on one side thereof. The laminar, dimensionally stable, flexible mold then is placed atop a recipient boat hull surface and a layer of fluid casting material. Pressure is applied to the laminar, dimensionally stable, flexible mold to expel entrapped gas from the fluid casting material and to evenly distribute the flexible casting material over the recipient hull surface. The fluid casting material is cured, and the laminar, dimensionally stable, flexible mold is removed. A replica of the surface texture remains on the recipient boat hull surface.

Abstract: An improved golf instructional device with a support member adapted to be held against a conventional or standard golf club, a coupler secured to the support member and a link of adjustable length. An arm pad is supported on one end of the adjustable link so that the trainer may be used by any size golfer. A threaded coupler is used at the top of the support member and the adjustable link, and a threaded bolt used to support the arm pad for ease of assembly and disassembly. A second arm pad is located on the end of a second adjustable link so that both arms are properly and unalterably positioned relative to the grip and the club.

Abstract: A method of constructing fibrous composite material, and a resulting structure, having a modular construction in which the modules are formed on mandrel assemblies having a metal core and an elastomeric, deformable and removable sheath. Fibrous composite material is wrapped around each sheath, which in a complex shape such as a thrust reversing cascade for a jet engine, has sets of similar modules arranged in rows across layered composite ribs and in columns in which the modules are mutually engaged. When bonded by heat and pressure, the epoxy matrix of the composite material joins the ribs and the modules into a structure of high strength. In a cascade configuration a slotted medal plate is bonded to the ribs and the modules, being positioned in slots in the plate, with modules positioned fore and aft of the plate to increase the bonding area.

Abstract: An earth boring bit having a body, pressure compensating lubricating system and cantilevered bearing shaft with an annular seal surface and a radial seal surface. A cutter is rotatably secured to the bearing shaft, with an annular seal recess having radial and cylindrical seal surfaces to oppose the seal surfaces on the body and bearing shaft to define a seal gland. A resilient and annular packing ring is compressed between the cylindrical seal surfaces, but has a length less than the minimum length of the gland. A shroud extends inwardly near the outer backface a selected distance behind the packing ring to bias it inwardly. The shroud extends inwardly toward the bearing not more than about 30% of the cross-sectional thickness of the O-ring in the relaxed condition. The O-ring is compressed in a range of about 10 to 15 percent.

Abstract: A drive system for a tiltrotor aircraft that provides for the operation of both proprotors by either engine or by both engines. The drive system provides an interconnecting drive shaft that extends between and connects the engines in such a manner that power is transferred from one engine to the opposite proprotor in the case of an engine failure. Also, the arrangement provides for the operation of a redundant essential systems for the aircraft should an electrical or hydraulic system fail to operate properly.

Abstract: A deformable sealing member is disposed between two surfaces such that a space is provided to at least one side of such sealing member. A smaller space may be provided to a second side of the sealing member. The sealing member is conformed to contact both surfaces. A pressure coming from the direction of the greater space between the two surfaces will cause the sealing member to deform into greater compliance with the two surfaces. However, should pressure reverse and approach the seal from the opposite direction the seal will distort into the area of greater space thereby causing the seal to break contact with one of the surfaces and for such pressure to vent past the seal.

Abstract: A three cone earth boring bit having circumferential rows of earth disintegrating teeth of wear resistant inserts of selected projection from the cone surfaces, one cone having an inner row separated from a heel row by a narrow circumferential groove and second cone having a hell-catching row that intermeshes with the narrow groove by an amount to minimize balling. A nozzle directs a jet stream with a high velocity core past the cone and inserts of adjacent cutters to the bore hole bottom to break up the filter cake while the lower velocity skirt strikes the material packed between the inserts of adjacent cores. A row of small diameter, recessed reaming inserts replaces the conventional heel row on the cone having a hell-catching row, thus providing space for the lateral displacement of the material generated between adjacent inserts in the critical heel-catching row.

Abstract: A two-cone earth boring bit having non-opposite cones that minimize the tendency for off-center rotation or rough running. The bit is composed of two cones, each having a cantilevered bearing shaft with an axis extending inwardly and downwardly. A rotatable, generally conical cutter is mounted on each bearing shaft, each cutter having a conical gage surface to engage and define a borehole with a wall of select gage diameter. The axis of one cutter is skewed relative to the other to cause the conical gage surface of the two cones to engage the wall of the hole at points that are other than 180 degrees apart as compared to nonskewed cutters. These points are separated by a distance less than the selected gage diameter. A line between these points is separated from a line extending from one point through the rotatable axis on the bit by a selected angle. The body of the bit and/or stabilizers are separated from the wall of the hole by a distance less than the selected gage diameter.

Abstract: An improved mechanical face seal for rock bits using rigid rings and energizers placed in recesses or grooves in the cutter and bearing shaft. The minimum diameter of the shaft groove is substantially equal to the relaxed inside diameter of the shaft energizer and the maximum diameter of the cutter recess is substantially equal to the relaxed outside diameter of the cutter energizer. The radii at the inner end of the shaft groove and the outer end of the cone groove conform to the relaxed cross-section of their respective energizers. The mean diameter of the shaft energizer is substantially equal to the cone journal diameter and the product of the mean diameter and cross-sectional diameter is the same for both energizers.

Abstract: An improved electrical transmission system for transmitting electrical power and data signals within a well bore having a string of tubular members suspended within it, each tubular member having a receiving end adapted for receiving data signals and a transmitting end for transmitting data signals, said receiving end and transmitting end being electrically coupled by a flexible printed planar conductor of the type having at least one substantially planar conductive band disposed between at least two layers of electrically insulating material.

Abstract: An earth boring bit having an improved two piece bearing and seal assembly containing a cantilevered bearing lug that is threaded to receive a mating bearing sleeve, the lug having a transverse shoulder intersected by a mouth on the sleeve to define a bearing shaft upon which is supported a rotatable cutter. A lubrication system includes a hydrostatic pressure compensator and seal means, the transverse shoulder being positioned inwardly of the seal means toward an inner end region of the lug to avoid exposure of the transverse shoulder of the lug and the mouth of the bearing sleeve to ambient drilling fluid. The seal means is a rigid face seal assembly which includes a rigid, sealing ring and a resilient energizer ring.

Abstract: An earth boring bit having a body and a cantilevered bearing shaft extending inwardly and downwardly from the body. A rotatable cutter with an open end is assembled over the shaft, which has a journal surface formed around a longitudinal axis. The cutter has a bearing surface sized to permit assembly over the journal surface of the shaft. At the open end of the cutter bearing surface is a seal recess which includes an intersecting wall that defines an annular, generally curved corner to oppose the journal surface of the shaft. The cutter bearing surface has a curved outer region that converges from the annular corner of the seal recess into an inner region to reduce the stress the corner induces upon the journal bearing surface of the shaft, including the stress induced by cutter cocking during drilling.