Abstract: An ear covering is produced by sewing first and second cloth layers together along a first closed loop seam, and forming a hole inside the loop and extending through both layers; turning the sewn first and second layers inside out by passing one layer through the opening; then passing one of the layers through a passage in a flexible insert in the form of a distorted, truncated cone; placing a third cloth layer over one of the first and second layers and sewing the first second and third cloth layers along a second closed-loop seam, thereby enclosing the insert within a toroidal enclosure formed by portions of the first and second layers. Afterwards, the assembly is turned inside out to form a cup-shaped receptacle for receiving an external ear, with the second seam in the interior of the receptacle, and with the first seam within the toroidal enclosure.

Abstract: A heat shield and gasket assembly has three members including a first heat shield, a second heat shield, and a gasket. Each of the members has a flange portion and the flange portion of the gasket is sandwiched is between the flanges of the two heat shields. The flange portion of the gasket is thinner than the flange portions of the heat shields. The thinness of the gasket flange permits it to engage threaded assembly fasteners without compromising the thread integrity of the fasteners.

Abstract: An ear covering is produced by sewing first and second cloth layers together along a first closed loop seam, and forming a hole inside the loop and extending through both layers; turning the sewn first and second layers inside out by passing one layer through the opening; then passing one of the layers through a passage in a flexible insert in the form of a distorted, truncated cone; placing a third cloth layer over one of the first and second layers and sewing the first second and third cloth layers along a second closed-loop seam, thereby enclosing the insert within a toroidal enclosure formed by portions of the first and second layers. Afterwards, the assembly is turned inside out to form a cup-shaped receptacle for receiving an external ear, with the second seam in the interior of the receptacle, and with the first seam within the toroidal enclosure.

Abstract: A heat shield and gasket assembly has three members including a first heat shield, a second heat shield, and a gasket. Each of the members has a flange portion and the flange portion of the gasket is sandwiched between the flanges of the two heat shields. The flange portion of the gasket is thinner than the flange portions of the heat shields. The thinness of the gasket flange permits it to engage threaded assembly fasteners without compromising the thread integrity of the fasteners.

Abstract: A joint seal has a through bore and two spherical spaced convex surfaces which mate with respective concave spherical surfaces on a pair of adjacent flanges. The flanges are welded to and about the periphery of corresponding spaced pipes one of which is inserted in the bore of the seal. The flanges are joined by two bolts, one flange being fixedly secured to the bolts and the other resiliently movably secured to the bolts by a pair of springs to permit that other flange to rotate in response to rotation of the pipe affixed thereto. The one flange forms a static wedge-like seal joint with one of the pipes and the other flange a dynamic seal joint with the respective seal spherical surfaces, the spherical seal and flange surfaces being urged together in wedged relation by the springs.

Abstract: A flexible joint for an automobile exhaust system includes a flexible bellows for sealing the communication between the engine and the tail pipe with first and second flanges fixed to the respective members and interconnected by coupling shafts that are fixed at one end to one of the flanges and passed loosely through the other flange whereby compression springs that surround the coupling shafts serve together with the bellows to provide support capable of accommodating relative axial and angular deflections between the members. One of the flanges is so configured and disposed with respect to the bellows as to limit the amount of angular deflection imposed on the bellows. Damping sleeves composed of compressed wire mesh material operate to dampen vibrations imposed on the joint.

Abstract: A positive verification of fluid flow from a reservoir through a metering pump is provided by monitoring the downstream fluid pressure fluctuations caused in the fluid conduit by inserting a pressure sustaining valve in it. A pressure switch or similar device coacts with a pulse timer to monitor the periodic pressure fluctuations in the conduit. A lapse in the periodic pressure fluctuations for a specified time allows the timer to activate an alarm signal.

Abstract: A substantially squeak-free heat cured exhaust seal adapted to be interposed between a pair of confronting pipes in sealing relationship therewith, comprises a one-piece substantially rigid grommet and a heat cured seal body of annular configuration and flat radial surfaces of different area at either end. The seal body comprises a mixture of metallic fibers, non-metallic filler, a thermally stable lubricant and a resin binder, and the grommet covers the entire inner circumference of the seal body, at least partially the large flat radial surface at one end of the seal body, and optionally at least partially the small flat radial surface of the seal body at the other end thereof.

Abstract: A high temperature seal, particularly suitable for use in vehicle engine exhaust systems, is formed of a composite structure including refractory sheet material and wire mesh. In a typical application, the seal is disposed between confronting ends of an engine exhaust manifold pipe and an exhaust tail pipe, and permits relative rotation of the pipes without impairment of the effectiveness of the seal, thereby preventing leakage of high temperature exhaust gases passing through the joined pipes.

Abstract: A heat cured exhaust seal, adapted to be interposed between a pair of confronting pipes in sealing relationship therewith, is formed of wire mesh having openings between the wires thereof and a mixture of metallic fibers, non-metallic filler, a thermally stable lubricant and resin binder, which mixture surrounds the wires and substantially fills the openings in the mesh and forms the seal. The method of forming the seal includes placing a preform of wire mesh into a die cavity, forming a powder mixture of metallic fibers, non-metallic filler, a thermally stable lubricant and a resin binder, placing the powder mixture into the die cavity, pressing the wire mesh and powder mixture to the final size and shape of the seal and curing the seal at an elevated temperature.

Abstract: A combination metal and knitted wire mesh gasket includes a gasket body formed of metal and having interconnected first and second portions. A layer of knitted wire mesh having a recess extending along the internal circumference of a first surface thereof receives the first portion of the metal gasket body. The second surface of the knitted wire mesh engages the second portion of the metal gasket body such that the first portion of the metal gasket body and the first surface of the knitted wire mesh form the first surface of the gasket. The second surface of the gasket is formed by the second portion of the metal gasket body.

Abstract: A high temperature seal, particularly suitable for use in vehicle engine exhaust systems, formed of a composite structure including refractory sheet material and wire mesh. In a typical application, the seal is disposed between confronting ends of an engine exhaust manifold pipe and an exhaust tail pipe, and permits relative rotation of the pipes without impairment of the effectiveness of the seal, thereby preventing leakage of high temperature exhaust gases passing through the joined pipes.

Abstract: A composite gasket includes two spaced rings of refractory sheet material and a ring of knitted wire mesh. The knitted wire mesh extends into the space between the refractory rings and radially outward from the outside diameter of the refractory rings.

Abstract: A high temperature seal, particularly suitable for use in vehicle engine exhaust systems, is formed of a composite structure including a refractory metallic oxide impregnated into compressed knitted wire mesh. In a typical application, the seal is disposed between confronting ends of an engine exhaust manifold pipe and an exhaust tail pipe and permits relative rotation of the pipes without impairment of the effectiveness of the seal thereby preventing leakage of high temperature exhaust gasses passing through the joined pipes.