Abstract: A guide sleeve is mounted to a bracket, with the guide sleeve arranged to guide a pneumatic air hose therethrough, with the pneumatic air hose arranged for winding about a spring-loaded reel structure, with the spring-loaded reel structure arranged for mounting to the handle portion of an associated air compressor.

Abstract: A system for sensing, computing, and displaying the length and the speed of chain or cable payout or reel in. The system employs only a single sensor which measures cable drum movement. The calculation function is accomplished by a microprocessor or minicomputer which is programmed with the basic dimensions of the cable and cable drum and with the required calculation formulae. A display gives continuous readout to the operator of the cable payout and speed values from a predetermined cable reference point. The system is directly employable in drum payout and recovery systems regardless of their application. The cable references may be of steel, rope or even chain and the system may be incorporated in helicopter or aircraft cable systems, mine hoists or elevator systems wherever a precise control or readout of cable payout is required.

Abstract: A tennis ball marker which has no moving parts in operation and in which a plurality of removable and interchangeable heating imprint modules are mounted in a housing containing an electric circuit for controlling the supply of power from a source to heat the imprint modules. The imprint modules comprise a ceramic body having an electric heating element embedded therein. The top surface of the ceramic body provides raised portions in the shape of letters or other identifying indicia which are seared onto the surface of a tennis ball placed in contact therewith. The imprint modules are readily interchangeable and are removably plugged into electrical receptacles in the housing to permit the identifying indicia to be readily changed. The housing includes window means through which the imprint modules are exposed.

Abstract: A combined tennis racket cover and support press including a case made of stiff material such as plastic and adapted to receive a tennis racket head, which case includes a bottom frame portion hingedly connected to two top half-frame portions which may be opened to receive the head of a tennis racket and closed and locked against springs urging open the top half-frame portions. The case provides a stiff enclosure to protect the racket against physical damage and contains pressure pads for applying pressure onto the head of the racket to prevent warpage.