A handle stem for a bicycle which comprises a stem body, a projecting portion extending radially outwardly from the top of the body, and a holding portion provided at the utmost end of the projecting portion, and is provided at the upper portions of the projecting portion and holding portion with a mounting surface made continuous on the same plane so that on the mounting surface is mounted a box of a display apparatus for electrically displaying operation, such as speed or a running distance, o...

A winding stem mechanism for a watch having a winding stem and a pinion with a shaft body. The winding stem and pinion are dimensioned to slidably fit within a base plate recess, and have respective facing ends. One facing end is provided with a square blind bore, and the other facing end is square and complementary to the blind bore and dimensioned to slidably fit within the blind bore so that the winding stem can slide away from the pinion without displacing same and the winding stem can slide...

A stem-operated fire-resistant gate valve including an improved metal-to-metal stem backseat a eutectic ring assembly for facilitating automatic stem backseating at pre-selected temperatures, spring enhancement of the backseating procedure, and a lost motion connection between the valve stem and the valve closure element.

A valve stem packing assembly in the form of a stacked array of seal ring elements of generally V-shaped cross-sectional configuration, a plurality of backup-energizing rings of generally Y-shaped cross-sectional configuration interspersed between the seal ring elements, a spring-energized U-shaped lip seal ring adjacent one end of the array, and a T-shaped adapter ring adjacent the other end of the array.

A valve having a valve member with a stem connected to an actuator and an improved stem seal for sealing between the stem and the interior of the body on a bonnet attached thereto. The improved stem sealing assembly includes a U-shaped resilient seal ring with means in its open end to ensure sealing engagement of the multiple internal and external sealing lips with the stem and body sealing surfaces and support rings positioned in grooves between the sealing lips and anti-extrusion means engagin...

A bicycle handlebar drop stem is disclosed wherein the step is manufactured from a single piece sheet metal blank. The blank is configured by a series of dies such that it is formed into a cylindrical post having an integral neck section and handlebar receiving head. The neck and head extend downwardly at an acute angle to the cylindrical post. To accommodate this downward angulation of the neck relative to the post, the blank is notched at the interface of the neck and cylindrical post sections...

An improved valve having a body with an inlet, an outlet, a valve chamber, a valve seat, a valve member movable in the valve chamber toward and away from said valve seat, a stem connected to said valve member a bonnet connected to and forming a part of the body a part of the body in the stem extending therethrough and an improved sealing assembly for sealing around the stem including a seal ring of extrudable material and means providing a space into which said seal ring extrudes to form a seali...

A bicycle handlebar stem assembly for securing the handlebars to the front fork of a bicycle frame. The stem assembly includes a separate tubular barrel and a sheet metal head section which are made in separate operations and connected by welding longitudinally extending edges of the head to opposite sides of the barrel to form the completed stem assembly.

A valve body has a stem passage rotatably receiving a valve stem. A packing surrounds the stem in the passage and a packing nut threaded on the stem applies axial force to radially expand the packing into sealing engagement with the stem and passage wall. Controlled slippage components interposed between the packing and packing nut allow rotation of the stem and packing nut without any rotational sliding movement against an end face of the packing. A packing support ring engages the end face of ...

A handlebar stem assembly is provided for securing the handlebars to the frame of a motocross bicycle consisting of top and bottom plates formed with arcuate grooves to receive and secure the handlebars therebetween. The bottom plate is welded to a stem which attaches to the bicycle frame, and at least one generally arcuate shaped relief opening is formed in the bottom plate adjacent its welded connection to the stem for reducing the stress concentration at such connection.