摘要:
A damper seal for providing a seal between a housing and a tube extending through the damper seal. The damper seal includes a body portion having an exterior surface and opposing first and second ends, the body portion defining a longitudinal axis. An interior surface in the body portion defines an opening extending through the body portion along the longitudinal axis. In addition, a plurality of conically shaped apertures extend axially into the body portion from each of the ends toward an opposing end.
摘要:
A composite elastomer-tipped tubular metallic device for armature and check valve applications has a hollow tubular metal body and a generally spherical elastomer ball fitted into an end of the body so as to project outwardly beyond the body end. Also, the body of the device has a seat structure provided internally at the end thereof which is adapted to capture and retain the ball in the body end. In several embodiments of the device, the seat structure is defined by a pair of axially spaced annular ribs formed internally in the body at the end thereof, with the ribs projecting radially inwardly toward a central axis of the tubular body. In one embodiment, one of the ribs may be formed as a split ring received in an annular groove in an interior surface of the hollow body.
摘要:
The present invention is a damper seal which is used in sealing a tube, such as a fuel nozzle, into a housing, such as a fuel canister. The damper seal provides increased sealing capabilities as the pressure inside the housing increases and further dampens vibrations which may occur between the housing and the tube. The damper seal includes a damper portion having outer and inner longitudinally extending scallops to define outer and inner contact surfaces for the damper seal. The inner and outer scallops are circumferentially offset from each other to enhance the vibration dampening characteristics of the damper seal. In addition, inner and outer seals having a U-channel located therebetween are provided for sealing against a tube and a housing, respectively, wherein the U-channel facilitates a positive biasing of the inner and outer seals into engagement with cooperating surfaces in the presence of a fluid pressure.
摘要:
A metal insert is provided for use in forming an elastomer-tipped armature to a precise length. The insert is formed as an elongated member with a central hole passing through its length, and an elastomer element is molded within the hole. A circumferential groove is formed in the exterior surface of the insert to create a weakened "hinge" point in the insert wall such that, as mold elements for forming the elastomer element engage opposing ends of the insert, the insert may be compressed longitudinally at the groove to thereby decrease the overall length of the completed armature to within a predetermined tolerance.