Abstract: A swivel coupling apparatus includes a pair of aligned metal pipe sections having grooved outer ends for connecting to hoses and rigid pipes by releasable clamp units. A gasket is disposed between the smooth end faces and an outer clamp housing encircles the end portions to mechanically connect the pipe sections. The pipe sections have outer shoulders with inclined clamp walls. The clamp housing includes a pair of semi-circular members having bolt clamping lugs for drawing the members onto the shoulders. The members having outer side clamp legs defining a cavity. A central rectangular spacer projects partially into the cavity for location between the outer portion of the end faces. The cavity has annular base walls between the spacer and side legs aligned with and outwardly spaced from the outer peripheral walls of the shoulders. Grease fittings to the opposite sides of the spacer provide for introducing of grease into the free space. The spacer has a smooth inner wall forming a backing for the gasket.

Abstract: A stern tube seal wherein a rotatable and slidable ring in close contact and sliding with respect to a fixed slidable ring secured to a stern frame side is loosely slipped over a rotating shaft (stern tube), and a packing having a shape of approximately funnel is interposed between said rotatable and slidable ring and a housing secured to said rotating shaft, whereby relative displacement of said rotating shaft with respect to said stern frame is not propagated to said rotatable and slidable ring by elasticity of said packing.

Abstract: A seal ring seals a shaft in a housing dynamically and statically. The dynamic seal function is provided by a porous compact which rotates with the shaft to pump liquid media centrifugally back into the sealed space and generally radial, inward channels which similarly pump gases which penetrate the compact to the channels. An annular gas impingement surface is spaced from the discharge ends of the channels at an obtuse angle to entrain the pumped gases back into the sealed space. The static seal centrifugally opens upon rotation.

Abstract: An oil seal assembly 1 for forming a seal between a wall of a machine housing 3 and a rotatable shaft 10 extending through said wall to prevent a fluid from leaking from inside to the outside of said housing through the gap between said wall and said shaft. The oil seal assembly comprises an elastic seal ring 7 made of an elastic material and having a base portion for fitting to the wall, a lip portion 5 with a lip edge 8 for resilient sliding contact with the surface of the shaft, and a lip neck portion 6 through which the lip portion is connected to the base portion. The oil seal assembly further comprises a reinforcement ring 4 made of a comparatively stiff material and associated with said base portion of said elastic seal ring.

Abstract: A centrifugal fluid seal construction may be employed to provide a pressure seal along a rotating shaft passing through a housing wall, and may also be employed as a containment seal where the pressure drop across the seal is minimal. Each of the disclosed embodiments includes a hollow rotor formed by an annular cup enclosed by an annular cover and adapted to be sealingly mounted on the shaft. Drain holes are present near the outer periphery of the hollow rotor. The housing has structure including an annular cap that defines a cavity in which the rotor is disposed in closely spaced relation to the housing. The housing cap has a cylindrical portion that extends into the rotor through the annular rotor cover and defines therewith an annular gap for fluid that may have leaked to pass radially outwardly under the influence of centrifugal force to the drain holes. Along such path there are conducting means for increasing the surface area in the form of axially spaced annular laminations or unified porous material.

Abstract: A sealing assembly, kit and method for rotatable shafts. The assembly includes a stationary seal member having an insert receiving opening dimensioned larger than a rotatable shaft, an insert member having an enlargeable shaft-receiving opening adapted to be mounted in the insert-receiving opening in the stationary seal member, and a rotatable seal member adapted to be mounted on the rotatable shaft to engage and cooperate with the insert member. The kit is similarly composed of the same elements but with a plurality of each such element having differing sizes to accommodate rotatable shafts of different dimensions.

Abstract: A fluid connection incorporating a metallic seal defined by a pair of cooperating, obliquely oriented sealing lips. The lips taper in thickness and are each carried by one of the connection elements to permit contact therebetween at their respective tips. A passageway from the main fluid conduit is provided to permit the fluid pressure to act against the sealing lips to urge them into tighter contact and thereby provide increased sealing force as the fluid pressure increases.

Abstract: A shaft seal device for a submersible motor, comprising a seal box which is provided at an end part of a case of the motor; a pair of lip type shaft sealing members which are disposed between an inner surface of said seal box and a rotary shaft of the motor and whose lips are arranged so as to inwardly face each other with a spacing therebetween; a lubricant which is stored in an interspace defined between said shaft sealing member; an auxiliary refuse remover which adjoins an outer side of one of said shaft sealing members and which is snugly inserted between the inner surface of an end part of said seal box and the rotary shaft of the motor, said auxiliary refuse remover being composed of a fitting and a soft material member which is received in said fitting and which is snugly positioned on the rotary shaft of the motor; and another refuse remover which is disposed so as to adjoin an outer side of said auxiliary refuse remover.

Abstract: An oil well string member has a cylindrical outer periphery having first and second cylindrical surfaces axially spaced and connected by a tapered ramp. The surfaces are radially inwardly of the outer periphery. The first surface has a smaller diameter than the second surface. A seal assembly is provided along the first surface and arranged to respond to fluid pressure for moving the assembly across the ramp to the second surface to a sealing position.

Abstract: A lip seal of elastic material has at least one sealing lip having a knife-edge sealing ridge particularly for sealing an axially moving part of a device from a liquid space, for instance in a galvanic metal-air cell. In order to improve the sealing of the axially moving device part with respect to the liquid space and to lengthen the sealing action, a membrane-like protective lip is formed on the liquid side in front of the sealing ridge, the lip resting with areal contact against the device part which is to be sealed off. The membrane-like protective lip due to its inherent tension or initial tension applies itself with high unit surface pressure against the surface of the device part to be sealed off.

Abstract: Labyrinth sealing apparatus to prevent rotational instability in the rotor of a steam turbine wherein such instability is of the type induced by steam whirl within the labyrinth seals. In a preferred form, the apparatus includes a plurality of fixed, spaced-apart annular teeth surrounding the shaft of a steam turbine whereby each tooth has a radially inner edge in very close proximity to the rotor surface, and further includes a fixed circumferential row of spaced-apart flow directing vanes encircling the rotor on the upstream side of the annular teeth. Each vane of the row extends radially inward to within very close proximity of a raised annular land on the shaft surface just opposite the vane row. The row of flow directing vanes and the raised land cause substantially the entire quantity of steam which enters the seal to pass through the row of flow directing vanes. Steam flow within the seal is caused to have a retrograde component counter to the direction of shaft rotation.

Abstract: A face seal positioned between a first threaded member 12 and a second threaded member 10. The face seal provides effective sealing between rotatably secured members of a cryogenic refrigerator. The face seal comprises a seal space 32 formed by dual recess 18, 19 and 20, 21 on the first 12 and second 10 members. Disposed within the seal space is a triangular anti-rotation ring 24 and a packing member 22. The seal may be disposed upon a flange 48 in such a manner as to allow pressurized gas from a chamber 64 to pressurize the seal space 32. Further, the flange may be angled so as to apply a preset spring force upon the seal space. Alternatively, the anti-rotation ring may be a tubular member incorporating an angled flange to be positioned in a chamfer on one of the seal faces.

Abstract: A sealing mechanism positioned between a movable piston wall and stationary cylinder wall concentric therewith. The sealing mechanism includes a circumferential groove formed in one of the concentric walls, and an O-ring positioned in the circumferential groove, the O-ring having a diameter less than the axial length of the groove and being compressed between a pair of opposing surfaces, a first surface formed integrally on the floor of the circumferential groove and a second surface formed integrally on one of the concentric walls. At least one of the pair of opposing surfaces has at least one upstanding serration for engaging the O-ring and forcing the O-ring to rotate when it moves from side to side in the circumferential groove.

Abstract: A mechanical seal assembly, especially for use in a slurry pump in which the seal rings are resiliently urged into sealing relation by at least one elastomeric assembly loaded in shear. The preferred embodiment is constructed as a cartridge for installation and removal as a unit but it may also be constructed for installation in situ.

Abstract: A high temperature seal, particularly suitable for use in vehicle engine exhaust systems, is formed of refractory sheet material which is first placed within a wire mesh sleeve. The sleeve is then wound into a cylindrical preform and axially compressed to provide a unified structure in which the mesh sleeve and sheet material are firmly interlocked.

Abstract: A sealing element located on corresponding openings of adjacent components which are rigid with respect to one another. The openings of the component terminate in sealing surfaces which are located opposite to one another and spaced from one another. A sealing ring, radially outwardly opened, is provided with a trapezoidal internal contour. The sealing ring is located between the sealing surfaces of the two components and cooperates with such components. The sealing ring is centered on a centering bead on an inside diameter of one of the components and a spreading element is located between inner leg surfaces of the trapezoidal internal contour of the ring for spreading the outer surfaces of the ring against the sealing surfaces of the component.

Abstract: A circular grooved honeycomb labyrinth seal having a plurality of arcuate base portions, a plurality of honeycomb-shaped cell portions extending radially inwardly from the base portion with a plurality of passages disposed adjacent the base portion, the passages being in fluid communication with each cell and with the upstream side and the downstream side of the honeycomb labyrinth seal.

Abstract: A bearing seal assembly, especially adapted for use between an automotive body and a steering wheel shaft is formed from identical molded annular rings (18) and (20) which snap-fit together through slots (38) and projections (42) and an annular gasket race (22) with a frusto-conical sealing lip (24). The annular rings (18, 20) form a T-shaped cavity (46, 48) in which the annular gasket race (22) is retained.

Abstract: A method of and device for aligning and securing an annular member on a shaft. The annular member is formed with a bore through which the shaft extends with clearance between the parts. A plurality of set screws are provided at one axial location of the annular member and one set screw is provided at another axial location and is axially aligned with one of the first mentioned set screws. The axially aligned set screws are tightened against the shaft to draw the opposite side of the annular member against the shaft so that the centerlines of the shaft and annular member are parallel but not necessarily concentric. The other set screws are then tightened to secure the annular member to the shaft.

Abstract: A flexible double toric sealing ring comprising two toric sealing ring structures 2, 3 which ensure, respectively, a static seal and a dynamic seal. A counter ring is mounted radially on the second sealing ring structure and floats with it to allow self centering of the arrangement with respect to the valve seat. A sealing membrane 8 presents an elastically deformable structure 12 interconnecting the two sealing ring structures 2 and 3 while partially covering them. The two sealing ring structures 2, 3 are mounted on opposite sides of the middle section 11 of membrane 8. This double toric sealing ring can be advantageously applied to a butterfly valve.