Abstract: A dry running mechanical ball joint seal includes a spherical element penetrated by a central passage and suspended between support rings that are pressed by springs against the spherical element and form a sliding dry seal therewith. A lip seal is located between the support rings and includes wipers pressed radially inward by a lip seal spring to form an additional seal with the spherical element. In embodiments directed to piping systems, a fluid is able to flow through the central passage. Other embodiments include a sliding rod directed through the central passage and sealed to the spherical element by a rod support within the central passage and also by at least one rod lip seal having a wiper pressed by a spring against the rod. The rod support can include a compressible packing material and/or a linear ball bearing sealed to the spherical element within the central passage.

Abstract: An improved split bearing for use with an aircraft landing gear assembly is disclosed. The split bearing includes first and second semi-cylindrical sleeve components adapted for installation in surrounding relation with the piston tube of a hydraulically actuated landing gear system of an aircraft. A retaining flange secures the split-bearing sleeve components and is adapted for assembly into an integral and complete nose gear lower bearing that allows removal of the main wear component without complete disassembly of the nose gear. A preferred embodiment disclosed herein is particularly adapted for use on an Embraer™ Emb120 turbo propeller aircraft. The nose gear lower bearing disclosed herein is designed to allow aircraft technicians the ability to quickly change the main wear portion of the lower bearing without the need to discharge, remove and/or disassemble the nose gear from the aircraft.

Abstract: A polyurethane conveyor roller end cap internally houses rolling bearing and externally is interference-fitted into an end of a roller tube. The outside surface of the body of an end cap, although arranged in large part to engage the tube, has provided therein a circumferential line of blind recesses designed to minimize the amount of polyurethane used for the end cap while still allowing for the provision of load bearing column of polyurethane.

Abstract: A ball and socket bearing assembly adapted to receive the vertical post of a rudder installed in the stern of a boat. The assembly consists of a molded journal box having a spheroidal cavity therein defining a socket in which is nested a ball-like bearing formed of UHMW polyethylene or of a material having similar non-stick properties, the post passing through an axial bore in the bearing. The assembly is produced by placing the preformed bearing in a mold to create an annular space between the bearing and the inner wall of the mold. This space is then flooded with a curable liquid resin monomer whereby when the monomer is polymerized and rigidified, it does not bond to the non-stick bearing. The bearing is therefore free to rotate in the cavity and align itself with the rudder post regardless of the degree to which the post deviates from the vertical as a result of hydrodynamic or other forces imposed on the rudder.

Abstract: An annular metallic support member has a cylindrical surface mountable within a bore of the spherical plain bearing outer ring or bearing housing such that a conical surface of the metallic support member overlies the spherical member. An annular elastomeric seal lip is mounted on the conical surface of the metallic support member, and an elastomeric seal body is mounted on the conical surface of the metallic support member, axially inward of the elastomeric seal lip, such that the elastomeric seal lip and elastomeric seal body contact the spherical member. The elastomeric seal body may have grooves for supplying lubricant to the elastomeric seal lip.

Abstract: An automotive speedometer assembly includes a speedometer head, a cable for mechanically driving the head and a seal positioned within the cable proximate the head for preventing infiltration of lubricant from the cable into the head.

Abstract: A cylindrical vibration damping bushing is provided which has an outer cylinder, an inner cylinder coaxially disposed within the outer cylinder, and having a radially outwardly expanded portion in its axially central portion, a pair of vibration damping rubber members press-fitted between the outer cylinder and the inner cylinder from both ends of the outer cylinder, and a pair of inserts, each being made of a resin material having good slidability and embedded in an inside end portion of each vibration damping rubber member so that an inside end surface thereof abut on each other. Each insert has a concave surface having a configuration conforming to that of the spherical outer surface of the expanded portion of the inner cylinder to enable the inserts to be slid on the spherical outer surface of the expanded portion.

Abstract: A bushing has a cylindrical retaining member and an inner cylinder having an expanded portion which radially outwardly expands at its axially central portion to define a spherical outer surface. A pair of ring-shaped inserts, each having a concave inner surface, are slidably disposed in contact with the spherical outer surface of the expanded portion. A pair of outer cylinders are press-fitted into the retaining member from open ends thereof. An inside end surface of each outer cylinder abuts on an outside surface of each insert, thereby pushing each insert toward the expanded portion of the inner cylinder. A pair of cylindrical sealing members are disposed between the outer cylinders and the inner cylinder for providing a seal therebetween. An inside edge of the outer surface of each sealing member is bonded to the inner surface of each outer cylinder, and an outside edge of the inner surface of each sealing member is in sealing engagement with the outer surface of the inner cylinder.

Abstract: A compound bearing consisting of an outer and an inner member movable relative to each other and between which are disposed load carrying annular members. The load carrying annular members comprise a pair of elastomeric rings held between the outer and inner members under compression, and a metallic ring insert disposed between and separating the two elastomeric rings. A narrow clearance is provided between the peripheral surface of the metallic ring insert and the inner surface of the bearing outer member, and between the metallic ring inner surface and the inner member peripheral surface. Normal loads are taken and absorbed by the elastomeric rings, while overloads and shock loads are taken by the metallic ring insert.

Abstract: A siren comprises a compressed air supply which is deflected by stationary deflectors to exit radially through stator ports. A rotor with spaced ports rotates between the stator and deflector thereby opening and closing the stator ports. Stationary vanes are disposed at circumferentially spaced locations, and constitute together with the deflector plate and stator and rotor housing, plenums. There are fewer rotor ports than stator ports, which generates an out-of-phase acoustical pattern which creates an acoustic combination from the stator ports of an acoustic output at a distance from the siren which is more uniform spatially. The thermoplastic seal between the stator and the rotor has minimal clearance under operating conditions having been run-in and plastically deformed at a temperature higher than for normal operation.

Abstract: A bearing system for fractional horsepower electric motors which comprises a shell supporting a stator, end members closing the ends of the shell, a shaft supporting a rotor within the stator and a bearing system on the end members rotatably supporting the shaft, the bearing system comprises a bearing member on said shaft that engages a seat on the end member, and a spring yieldingly urging the bearing member against the seat. An oil retainer is associated with the end member and longitudinally spaced seals having radially inwardly extending lips engage the shaft and isolate the oil retainer means and bearing with respect to the remainder of the shaft.

Abstract: A spinning reel of the rear drag type having greatly improved durability has a reel body made of plastic with a recess portion formed at a rear end thereof, and a fitting through-hole formed in a bottom wall of the recess portion. A spool shaft passes through the through-hole in the bottom wall. A click receiver made of metal and having a washer receiving flange at one end thereof is engaged with the reel body, the click receiver being fitted in the through-hole and fitted around the spool shaft so as to be slidable but not rotatable with respect thereto. A click member is fitted on the spool shaft for rotation therewith and is received within the click receiver, and a plurality of drag washers are fitted around the spool shaft abutting the click member. A drag mechanism applies an adjustable force to the drag washers.