Abstract: An electrode sensor for a biomedical electrode of the button type comprises a plastic base which consists of a shank to be clinched to fill up the cavity of an expanded hollow head of an electrode button and a base flange formed in one piece of the shank, and an electrically conductive film formed over the plastic base. The flange is bowl-shaped with a gradual upward inclination from the center toward the periphery. The flange has a plurality of projections or grooves formed on at least either its upper or under side.

Abstract: A ball-side piece of a snap fastener comprises two members; an inside member having a portion adapted to be in contact with one side of a fabric or the like and a guide face portion provided therearound to receive and guide curved tips, or claws, of a backing member, and an outside member extended over and secured to the periphery of the inside member. The outside member has a round head adapted to engage a socket-side piece of the snap fastener, a flat flange portion adapted to contact the same side of the fabric or the like and hold the deformed claws of the backing member as attached to the fabric or the like, and a curved guide face portion extending over the guide face portion of the inside member toward the periphery of the flat flange portion so as to receive and guide the claws of the backing member.

Abstract: A button comprising a button head of plastic resin formed with a cavity having an internally expanded portion, and a metallic leg piece including a generally disc-shaped base larger in diameter than the inlet of the cavity and at least one leg upstanding from the disc-shaped base, said base being fitted in the internally expanded portion through the narrow inlet of the cavity.

Abstract: In a fastener-attaching apparatus equipped with a feeder for selectively delivering two different component pieces of fasteners from two separate feed hoppers to an attaching point, the improvement in the feeder which comprises a pair of tracks having a pair of vertically parallel fastener-guiding T-grooves which extend from the delivery openings of the two feed hoppers and terminate in vertically juxtaposed fastener discharge outlets, a shifting mechanism for selectively closing and opening the T-grooves of the tracks, a guide having a guide groove provided at right angles to the T-grooves and extending to the fastener-attaching point, with the fastener discharge outlets open in the guide groove, a fastener limiter slide located opposite to the discharge outlets and urged by a spring slidably and partly into the guide groove, the limiter slide having separate fastener-piece-receiving recesses corresponding, respectively, to the upper and lower discharge outlets, and a pusher bar slidable in the guide groove

Abstract: A phase shifting circuit having a first delay element with a time constant .tau..sub.1, a second delay element with a time constant .tau..sub.2 smaller than .tau..sub.1 and a pulse generating element such as p-n-p-n transistor produces phase shifting pulses with respect to a reference phase upon application of a step-up voltage to the first delay element and periodic pulses to the second delay element. The two signals rise at different rate following respective curves and the two curves intersect at various points. The pulses generating element compares the two signals and produces a pulse at the instant the two signals coincides at the intersecting points. The phase shifting pulses have a linear phase relation with respect to the reference phase which is equal to the phase of the periodic pulses applied to the second delay element.

Abstract: A button comprising a button head of plastic resin formed with a cavity having an internally expanded portion, and a metallic leg piece including a generally disc-shaped base larger in diameter than the inlet of the cavity and at least one leg upstanding from the disc-shaped base, said base being fitted in the internally expanded portion through the narrow inlet of the cavity.