Abstract: A reel based closure device for tensioning a tension member is described herein. The reel based closure device includes a housing that defines a vertical axis, a plurality of teeth operably coupled with the housing, a spool rotatably positioned within the housing, and an engagement member comprising one or more teeth that engage with the plurality of teeth during a rotation of the spool. A dial or knob is operably coupled with the spool so that a rotation of the dial or knob effects the rotation of the spool to wind the tension member about the spool. A length of each tooth that is operably coupled with the housing is substantially longer than a length of each tooth of the engagement member.

Abstract: A shaft seal assembly is disclosed having a stator including a main body and axial and radial projections therefrom. The rotor is radially extended and encompasses the axial and radial projections from said stator. A passageway formed between the radial projection of stator and rotor results in an axial passageway having its opening facing rearwardly from the rotor and away from the source of impinging coolant and/or contaminant. A concentric circumferential receptor groove in the stator facing the housing allows insertion of conductive means for transmission of electrostatic charge away from the shaft through the shaft seal assembly to the housing and ground. The receptor groove is opposite the axial passageway and provides for both a substantially lower contaminant environment and improved engagement with conductive means.

Abstract: A adjustable crutch, cane or similar walking aid for assisting everyday movement for temporarily injured and even permanently handicapped persons, the crutch having telescoping crutch tubes encasing a locking gas spring crutches which can instantaneously and controllably be adjusted in length during use, thereby considerably facilitating such common physical activities as sitting down, standing up, negotiating stairs or other obstacles and other similar everyday mobile activities. The locking gas spring functions by internal gas pressure and the telescoping crutch tubes are extended as the internal gas pressure seeks to reach the lowest energy state by maximizing its internal volume. For safety purposes a disengagement mechanism is provided so that extension occurs up to a preset level dictated by the user, and can even be overridden if desired.