Abstract: The center locator utilizes a probe mounted for limited universal movement by a ball and socket arrangement. The center locator is affixed to the machine tool spindle so that the center of the ball coincides with the axis of the machine tool spindle. One end of the probe, provided, for example, with a sharp point, is placed in registry with a punch mark or pilot hole. The other end of the probe cooperates with two orthogonally located sensors. Each sensor includes a plunger confined for rectilinear movement by a hollow calibration nut, the plunger of one sensor being movable in the X direction in a plane at right angles to the spindle axis, and the plunger of the other sensor being movable in the Y direction in said plane. Springs cause the plungers to maintain contact with the probe end to follow the probe end along the X and Y axes respectively. The ends of the plungers are flat and move inwardly and outwardly of correspondingly flat tactile ends of the calibration nuts as the probe tilts in its mounting.

Abstract: A pedal is provided with a frontal half hoop or ring. A plastic cleat attached to the shoe of the cyclist has a circular plate that fits the loop or ring. Registry is achieved by a pin or hook that projects forwardly of the plate. The pin or hook captures the hoop or ring. To engage the coupling, the cleat is outwardly pivoted and then returned so that companion rigid clips on the cleat and the pedal interlock. A detent retracts downwardly as the clips move into engagement. Such downward movement is effected by a moderately sloped first cam surface; an adjoining steeply sloped second cam locking surface of the detent keeps the cleat in locked position. In an unlatched position, force can yet be effectively applied to the pedal whereby so that unrestrained complete separation or full latching are options while the bicycle is operated.

Abstract: An improved golf club iron head utilizes a composite structure of two different weight densities to transfer weight from the hosel and heel to the ball-impact region of the head. The disclosed embodiment comprises the combination of a lightweight composite material in the outlying structural portions of the head and a metallic insert to form the majority of the face, the sole and a backweight to improve weight distribution, utilization of material mass and control of the location of the center of gravity.

Abstract: A security device for a door structure comprises a simple bracket that surrounds the retractable latch element at the edge of the door, the bracket having a return extending along the inside of the door, stopping short of the inside latch or lock actuator. A resilient pad is interposed between the return and the door. The bracket is connected to the latch element, either directly or indirectly upon imposition of a break in force so that, immediately upon imposition of a kick force adjacent the lock, the latch element engages the bracket, thus transmitting the force to the inside return, and through the shock absorber to the inside part of the edge frame member.

Abstract: A molding for drywall panels or the like has a channel to provide a reveal. To provide selected finish or color, a trim structure is provided that likewise has a channel configuration. The side walls of the trim structure and the side walls of the molding provide a sawtooth and rib structure for snap connection. The ends of the trim channel sides provide laterally outwardly extending lips to overly the end edges of the molding. The trim conceals all plaster splashings, obviating cleaning, provides selected color or finish. The desirable reveal characateristic is retained by virtue of the fact that the trim structure itself is a channel.

Abstract: A plaster screed is made of two metal parts of uniform cross-sectional configuration. The two parts overlap, each part providing one of the sides of the channels. The first part provides a laterally projecting attaching flange as well as the channel bottom, the channel bottom being extended beneath the channel side provided by the second part as well as beneath its laterally extending attaching flange. The attaching flange of the second part is stepped so that the bottom of the screed is essentially flat. The area of the step just beyond the terminus of the first part provides a rearwardly facing groove filled with a suitable thermoplastic sealant. The sealant complements the parts to provide a flat base free of moisture traps while allowing slight relative movement between the parts for relieving stress that otherwise would build up in the plaster material.

Abstract: A hydrodynamic swim fin utilizes a wing and a tail that are overlapped normally to provide a two stage propulsion system. Ribs support the wing and tail and define flow channels. These ribs are parallel to each other and to the longitudinal axis of the fin whereby the effective area through which flow proceeds is uniform throughout the length of the fin. No parts of the ribs form barriers to the leading edges of the side wing segments whereby laminar flow is achieved. The fin part is maintained essentially rigid; however, the fin part is allowed limited angular movement about a defined transverse axis to achieve proper attack angle. Since the fin part is rigid, it maintains that attack angle throughout the length of the fin part. Trailing ends of the wing are individually flexible to produce greater opening for two stage propulsion during the power downstroke, and to produce substantial closure for one stage propulsion during the upstroke.

Abstract: A footstep for attachment to a bicycle component, such as a front fork, has a channel or semi-cylindrical configuration that encompasses the bicycle component when the footstep is in its retracted position. The combined lateral dimension of component and footstep is barely greater than that of the component itself whereby the footstep is out of the way. The lower end of the footstep is pivoted to the component so that it can be moved outwardly into operative position. Edges of the footstep provide spaced apart lines of contact for great stability. Weight and shock loads are directly and efficiently transmitted to the bicycle component. A small tab facilitates movement of the footstep to operative position by foot manipulation.

Abstract: A saddle for a bicycle comprises a nose-like front part, a rear part having a larger width portion, and an edge part formed with walls extending downward wherein the rear part has an elongated opening to allow insertion of fingers, the opening extending along the rear edge part in order to provide a grip or handle formed by means of the wall extending between the opening and the rear edge part. The grip or handle at the rear if this saddle is formed so that a freestyle rider may hold this grip with his thumb and four fingers.