A slewing bearing including a first ring, a second ring, the first and second rings being in relative rotation around a rotation axis, at least one row of rolling elements arranged between the rings, and at least one seal mounted in a circumferential groove of first ring. A cap is fixed to the first ring and provides a cap sealing member having an annular heel mounted in an circumferential slot formed on a frontal surface of cap, and a sealing lip projecting from the heel and towards the second ring. The sealing lip has a free end in sliding frictional contact with part of the second ring.

A thermal management structure may include a body and a pad. The body extends between a first outer surface and a second outer surface. The pad moves relative to the body. A thermal management channel extends within a portion of the body and extends within a portion of the pad. The thermal management channel directs fluid to one or more locations within the body and to one or more locations within the pad.

A slew bearing including a stationary bearing ring to be fixed to a base, and a moveable bearing ring which is to be fixed to a moveable object and which is concentric with the stationary bearing ring, the stationary bearing ring and moveable bearing ring being configured to enable rotation of the moveable bearing ring relative to the stationary bearing ring, wherein the moveable bearing ring comprises a top ring member, a bottom ring member, and a middle ring member in between the top and bottom ring member, the top, middle and bottom ring members each being formed by a plurality of ring segments wherein vertical joints between ring segments of adjacent ring members are not aligned to each other, wherein the top, middle and bottom ring member comprise a plurality of holes distributed about the circumference of the moveable ring, respectively, wherein the top, middle and bottom ring member are connected to each other by a plurality of bolts received in the corresponding holes of the moveable ring member, and wherein at least one hole in the middle ring member and a corresponding hole in the top ring member and/or a corresponding hole in the bottom ring member are provided with a tubular alignment member having an outer diameter equal to the corresponding holes, an inner diameter allowing to receive a bolt, and a length large enough to extend from the middle ring member to the top ring member and/or the bottom ring member, respectively.

A hinge assembly includes: a body; a first arm pivotally mounted on the body and movable between a first position and a second position, the first arm including a plurality of teeth formed thereon; a pawl mounted on the body proximate to a portion of the first arm, the pawl shaped to releasably engage the plurality of teeth of the first arm. In a collapsed position of the hinge assembly the pawl is disengaged from the plurality of teeth of the first arm such that the first arm is pivotable relative to the pawl. In a deployed position the pawl engages the plurality of teeth of the first arm to releasably secure the first arm in the second position.

A rudder for watercraft, in particular for ships, is proposed, comprising a rudder shaft arranged in a trunk pipe, a rudder blade connected to the rudder shaft and a bearing bushing arranged between trunk pipe and rudder shaft as well as a bearing clearance measuring device, wherein the bearing clearance measuring device comprises at least one sensor for abrasion-free measurement of a bearing clearance.

Disclosed are the design and utilitarian characteristics of a support device for supporting a cover wherein such cover is typically used to cover a vehicle such as a boat or automobile. The invention includes a dome shaped support device with a depending base configured for extending through a cover. The depending base defines an interface for being associated with a support structure such as a pole and such interface may be a swivel interface. Additionally, the support device may define a suspension interface so that a tether may be used to apply a support force from above the support device. The support device may also define a swivel device configured for being associated with a support surface such as a floor.

A sliding contact surface-forming material, and method of making the material are disclosed, the material having minimal swelling and excellent friction-proof and wear-proof characteristics when used in moist environments such as in water, and improved in the friction-proof and wear-proof characteristics under dry friction conditions such as in the open air, particularly under oscillation conditions for testing journal. The material includes a reinforcing base impregnated with a resol-type phenolic resin having polytetrafluoroethylene resin dispersed therein. The reinforcing base is composed of a woven fabric formed by using, as each of the warp and the weft, a ply yarn which is formed by paralleling at least two strands of a single twist yarn spun from fluorine-containing resin fiber and a single twist yarn spun from polyester fiber, and by twisting them in the direction opposite to the direction in which the single twist yarns were spun.

A thermal management structure may include a body and a pad. The body extends between a first outer surface and a second outer surface. The pad moves relative to the body. A thermal management channel extends within a portion of the body and extends within a portion of the pad. The thermal management channel directs fluid to one or more locations within the body and to one or more locations within the pad.

A device for stabilizing pressure inside a gear's housing or a wheel's hub includes a bladder, and a conduit coupled to the bladder and coupleable to a volume containing a lubricant. The bladder includes a chamber having a volume, and is configured such that the chamber's volume increases as a fluid enters the chamber, and decreases as fluid leaves the chamber. The conduit includes a first end positionable adjacent the lubricant containing volume, a second end coupled with the bladder, and a passage between the first and second ends, and is configured to hold fluid disposed in the passage and direct the fluid between the first and second ends. When the conduit is coupled to the lubricant containing volume, the volume of the bladder's chamber, the passage of the conduit and the lubricant containing volume are isolated from the ambient environment.

This power system for mounting on a marine vehicle includes a propulsion unit, means for securing the propulsion assembly to a hull element of the vehicle and a rudder bearing mechanically connecting the propulsion unit with the fittings. The fittings are configured so that once the power system is mounted on the hull element; the plane of the rudder bearing is inclined relative to a plane containing one longitudinal axis and one transverse axis of the marine vehicle.