Abstract: An improved interchangeable knitting needle system comprising knitting needles, preferably made of molded plastic, and being formed with cable connecting members that prevent breakage of the needles during use with detachably engaged hollow flexible cables that collect the knitted loops, and the like therealong. A pair of needles may be connected to opposite ends of a flexible cable for the storage of looped yarn therebetween. The system further includes a double-ended connector member capable of interconnecting a plurality of flexible cables between a pair of knitting needles. Said double-ended connector member having opposite connecting ends which are also detachably engageable at the ends of the joined flexible cables. The system further provides a stop button capable of detachably connecting to one end of a cable whereby one knitting needle may be independent of the cable, and another knitting needle may be secured to the other end of the cable to enable the storage of looped yarn along the cable.

Abstract: A rubber stamp with a skirted housing in which a plunger is slideable and spring biased to an upward position. At its bottom end the plunger includes a slotted base to which a print block is removably attached, and at the top end thereof the plunger includes a snap locking cap which permits easy assembly and disassembly of the unit. A frame contains the print block and includes a pair of ribbed flexible arms removably engageable within the slots of the base. Finger tabs connected to the flexible arms are accessible through cutouts in the housing skirt and effective for squeezing and removing the framed print block. A transparent cover is attachable to the housing skirt and covers the inked print block, and abuts the finger tabs so that the print block cannot be moved and inadvertently ink the inside surface of the transparent cover.

Abstract: A medical pressure indicating injection gun for injecting fluid into a balloon catheter, with a visual indication of the balloon pressure. The injection gun includes a barrel adapted for attachment thereto the body of a syringe, and a bracketed coupling shaft for holding the syringe plunger. The coupling shaft includes pressure gauge marks thereon, and is slideable within a cylinder chamber on the end of a ratchet shaft, and in compression with a spring also in the chamber. A ratchet mechanism is employed for engaging teeth on the ratchet shaft and advancing the ratchet shaft forward, and through the spring the coupling shaft and attached syringe plunger are advanced as well. Pressure build-up in the balloon catheter causes the coupling shaft to retract into the cylinder chamber in compression with the spring and indicate by the gauge marks the balloon pressure.