Abstract: A device for indicating elapsed time by way of the state of indicators is disclosed, such indicators being arranged in at least four groups such that the first two groups taken together indicate elapsed hours and the second two groups taken together indicate elapsed minutes. The indicators are switchable between a first and second state, such as illuminated or not illuminated. The number of indicators in a first state, such as illuminated, indicate the value of a digit.

Abstract: A microdensitometer capable of submicron resolution is achieved by incorporation of adjustable diaphragms situated outside the optics of the microdensitometer.

Abstract: A tool attachment for a percussion drill power tool which expands and sets, essentially but not limited to, fastening anchors used in concrete and masonry. The tool's body is generally cylindrical and is mostly hollow to slip over a drill bit (38, 74) of the percussion drill, using a spring clip (24, 124) to keep it from falling off. The opposite end of the tool has either a coaxial concave recess (54, 154, 354, 454) to place onto an anchor (58) or a coaxial plunger (260) to slip into a mostly hollow anchor (258) that are placed into a drilled hole (64, 264). The anchor (58, 258) is then expanded and set into the concrete or masonry by the hammering action transmitted through the tool by the percussion drill.

Abstract: There is provided a method for enabling the placement of a severed tendon to a position in its associated sheath to be repaired or passing a tendon end through any small enclosed space. An elongated, flexible hollow tube with openings at both ends, and is received in the sheath. The tube has two sections with one section being somewhat rigid, although flexible, while the other section is thin, collapsible, and flares out. The flared section receives an end portion of the severed tendon. The opening in the end of the more rigid section is connected to a source of suction. The suction holds the tendon in place within the tube and causes the flared section to collapse tightly about the end portion of the tendon. The tube and the tendon are pulled through the sheath to the place where it was severed for repair.

Abstract: There is provided an apparatus for enabling the placement of a severed tendon to a position in its associated sheath to be repaired or passing a tendon end through any small enclosed space. The apparatus includes an elongated, flexible hollow tube with openings at both ends, and is received in the sheath. The tube has two sections with one section being somewhat rigid, although flexible, while the other section is thin, collapsible, and flares out. The flared section receives an end portion of the severed tendon. The opening in the end of the more rigid section is connected to a source of suction. The suction holds the tendon in place within the tube and causes the flared section to collapse tightly about the end portion of the tendon. The tube and the tendon are pulled through the sheath to the place where it was severed for repair.