Abstract: A metal laminate gasket of the invention seals between two engine parts with holes. The gasket is basically formed of a first plate and a second plate situated above the first plate. The first plate includes a groove formed around a hole to be sealed, which includes an inlet portion and two inclined side walls. The second plate includes a bead formed around the hole to be sealed, which includes two base portions and two side portions. When the first and second plates are assembled, the side portions of the bead abut against the side walls of the groove. When the gasket is tightened, the side portions of the bead are pushed against the side walls of the groove to seal therebetween, and surface pressures are formed at the base portions of the bead around the groove to securely seal between the engine parts.

Abstract: A totally split mechanical face seal being installable and replaceable without necessitating breakdown of the shaft and/or housing. The inventive split seal is well suited for replacement of packing or stuffing in heavy duty or inaccessible locations. The inventive seals include a sealing element that seals the primary ring against the shaft and rigidly positions the primary ring in the axial, circumferential and radial directions, and also includes a sealing element which seals the mating ring against the housing and non-rigidly positions the mating ring in the axial diection while simultaneously providing an axial biasing force on the mating ring to provide mating contact of the two rings.

Abstract: A cartridge seal is described where the outer ring 1 and the inner ring 4 are inseparably joined to each other. The outer ring has a circumferential groove 2 which is axially open in a direction toward the outside 14 and which is engaged by a first and second sealing lip of the inner ring 4. The second sealing lip 9 is formed by an extrusion of the protruding end of the first sealing lip 8. Both sealing lips 8, 9 contact their corresponding counter surfaces 6, 7 with circumferential sealing edges 10, 11.

Abstract: A cylinder head gasket with at least two juxtaposed passage openings separated by a web is described and which is provided in the web area with a metallic reinforcement. The reinforcement has a cross-section tapering in the longitudinal direction of the web at least on one side. It preferably comprises a crimped sheet metal body.

Abstract: Disclosed is a metal gasket for a manifold produced by laminating a plurality of bead plates having bead portions which are bent at a predetermined radius of curvature R and by setting the ratio R/t of the radius of curvature R to the thickness t of the bead plates to the range of 7 to 15. Therefore, the radius of curvature of the bent portions of the bead plates to the thickness can be made relatively great and the bent portions of the bead plates become smooth. As a result, when the metal gasket is tightened between a cylinder head and an exhaust manifold, the contact portions of the bead plates are expanded and the stress and face-to-face pressure occurring at the contact portions can be reduced. Accordingly, the stress acting on the bead plates can be made lower than a reference value, the increase of the facet-face pressure can be restricted to within a predetermined range and the stress and face-to-face pressure of the bead portions forming a seal surface can be kept within suitable ranges.

Abstract: This invention relates to a labyrinth seal comprising a first side in alignment with a radial axis and a second side opposite said first side, said first and said second side each including an inclined tooth, and an inner-axial surface in alignment with an axial axis and an outer-axial surface opposite said inner-axial surface having at least one hole extending to said inner-axial surface, said inner-axial surface including a plurality of teeth extending substantially inwardly toward the axial axis having grooves therebetween.

Abstract: A valve stem seal assembly comprises a valve stem seal having an external flange and a sealing lip, a washer having a tapered axial bore therein, a spring extending between the external flange of the seal and the washer, and a member engaging the seal and the washer and holding the seal, spring and washer together. The member has a lower tubular portion, an intermediate conical portion engaged by the sealing lip of the valve stem seal, and flexible fingers at the upper end of the member which are in engagement with the tapered axial bore in the washer.

Abstract: An improved seal for sealing across an annulus between an inner cylindrical sealing surface and an outer cylindrical sealing surface. The seal provides a body and a flange spaced therefrom with an annular flexible arch extending between the body and the flange and having a taper of its thickness so that its thinnest section is at the mid point of the arch and within its sealing area. A suitable sealing is provided to seal against the surface opposite to the surface against which the flexible annular arch seals so that there is a complete sealing across the annulus. This seal is suitable for piston rod sealing, valve stem sealing and for sealing in the annulus between two tubular well members.

Abstract: A gap between tunnel segments 1 is sealed by rubber sealing members 8 that are provided with grooves 10 and tubular cavities 11. To improve sealing when a high pressure is applied to one side of the seal, at least one cavity nearest that side is open to the high pressure through apertures 12.

Abstract: A drain cleaning machine is disclosed which is of the character comprising a frame supporting a rotatable drum which is driven by a motor through an endless belt. The drum contains a flexible drain cleaning snake which is rotatable with the drum and axially displaceable into and out of the drum, and the frame supports a snake feeding device through which the snake extends and by which the snake is displaced into and out of the drum. The frame is wheeled to facilitate transportation of the machine from one location to another. The drum, drum shaft and bearing are constructed as a unit removably mounted on the frame. The drive motor is pivotally mounted on the frame and spring biased to tension the drive belt and to facilitate separation of the drive belt from the drum to facilitate removal of the drum unit from the frame.

Abstract: A drain cleaning machine is disclosed which is of the character comprising a frame supporting a rotatable drum which is driven by a motor through an endless belt. The drum contains a flexible drain cleaning snake which is rotatable with the drum and axially displaceable into and out of the drum, and the frame supports a snake feeding device through which the snake extends and by which the snake is displaced into and out of the drum. The frame is wheeled to facilitate transportation of the machine from one location to another. The drum, drum shaft and bearing are constructed as a unit removably mounted on the frame. The drive motor is pivotally mounted on the frame and spring biased to tension the drive belt and to facilitate separation of the drive belt from the drum to facilitae removal of the drum unit from the frame.

Abstract: A seal assembly, for maintaining a seal condition between a housing and a rotary shaft extending from the housing, it accommodates a significant degree of non-orthogonal alignment between the housing and the shaft. The seal assembly includes a rotary seal member affixed to a rotary shaft, and a stationary member surrounding the shaft and including an internal bore having a contact surface. An annular, stationary floating member surrounds the shaft and is exposed in the internal bore. The floating member includes a surface in sealing engagement with the rotary seal member. An annular slip ring is disposed in the internal bore, and in contact with the floating member and the contact surface. The slip ring provides an articulated link between the floating member and the contact surface of the stationary member, by virtue of being radially displaceable along a rear surface of the floating member.

Abstract: A lubricant seal assembly adapted for installation in an annular clearance space between a shaft and a surrounding housing. The assembly includes inner and outer case members that can be press fit on the shaft and housing. An annular bumper element is arranged between confronting surfaces of the case members to limit excessive telescopic motion of the members during the installation process. The bumper element is formed of a fusible material, such that during an initial break-in period frictional heat melts some of the bumper material to quickly produce a low friction seal assembly.

Abstract: A mechanical face seal includes a seal face member which is secured in fixed rotational relationship and sealed with respect to one component by means of a resilient bellows unit, said bellows unit being attached at one end to the associated component and at the other end to the seal face member, the seal face member being biased into sealing engagement with a second seal face member by compression of the bellows unit, the bellows unit defining a plurality of convolutions, a convolution in a portion of the bellows unit subject to higher stressing having a pitch which is greater than and/or a depth which is less than that of a convolution in a portion of the bellows unit subject to lower stressing, thereby evening out the stress distribution in the bellows unit when in operation.

Abstract: A metal plate of the present invention includes at least one bead having a bead body and a bead end portion terminating in the middle of the plate. The bead end portion has curved edges connected to edges of the bead body. The distance between the curved edges of the bead end portion increases as the distance from an end of the bead body increases. Also, the height of the bead end portion gradually decreases as it approaches edges thereof. The metal plate may be used as a gasket or may be combined with other metal plates to constitute a steel laminate gasket.

Abstract: A seal assembly for a rotating drum in which a rotating member is secured relative to the drum for rotation therewith. An air chamber is provided adjacent the drum for introducing sealing air into the drum. At least one seal ring is secured to the rotating member for rotation therewith, and a seal member is disposed in an air chamber and is biased into sealing engagement with the seal ring by the air pressure in the chamber.

Abstract: There is provided a protective boot which provides an essentially constant volume chamber around a reciprocating shaft to prevent the inspiration of atmospheric contaminants into the area around the shaft.The boot defines a chamber, which comprises two sections, a longitudinally extendible and contractible first section and a radially extendible and contractible second section. The second section is constructed of elements or portions which flex outwardly or pop out from a neutral position in response to an increase in pressure in the section, and other portions which flex inwardly from a neutral position in response to a decrease in pressure. The portions flex outward at a predetermined pressure which is higher than the neutral or atmospheric pressure. When a pressure decrease from neutral occurs, a relatively low pressure is reached, which is sufficient to initiate the inward flexing from a neutral position of other portions of the section.

Abstract: A light-reflective marker for roadways or the like and having a supported stake with a tubular member telescope thereover. The upper end of the tubular member has light-reflective material effective on a 360-degree circle around the marker. The outer tubular member has approximately at least twice the interior diameter compared to the outer diameter of the stake which is telescoped within the tubular member. The two parts can be fully telescoped together and extend over the same length for the storage mode of the marker.

Abstract: A method for honoring the Flag and Nation for which it stands is accomplished by having a weather cap and protective flag housing upon a flag staff such that a cabling and winching system will, via a pulley and bar-ring supporting, spring-return, slidingly captured, internal staff insert, move the housing and insert in opposite directions along the staff, the housing enveloping the Flag, the Flag being furled along the staff by a flag attached, flying flag cord passing through the moving ring, until the housing mates with the weather cap, protecting the Flag. Reversing the winch lowers the housing, permits the spring-return insert to move, unfurling the Flag, thus honorably displaying the Flag.