Abstract: Firearm docking systems include a receiver bracket configured for attachment to a mounting structure, a bracket slot in the receiver bracket, an adaptor retaining mechanism carried by the receiver bracket adjacent to the bracket slot and a male adaptor configured for attachment to a firearm and including an adaptor flange inserted in the bracket slot. The adaptor flange is selectively rotatable in the bracket slot. A plurality of adaptor flange openings is provided in the adaptor flange. The adaptor retaining mechanism releasably engages at least one of the plurality of adaptor flange openings. The firearm can be mounted and rotated relative to the mounting structure by rotating the adaptor flange relative to the adaptor retaining mechanism in the bracket slot. Thus, the firearm can be both secure and ergonomically correct in an easily-retrievable position.

Abstract: A conditioning and exercising device which is characterized in a preferred embodiment by a rewind housing containing a rotatable pulley provided with a pull cord, which rewind housing is connected to a torsion spring or spool housing. The rotatable pulley is connected to a rotatable top spool connected to a torsion spring wound on a rotatably mounted bottom spool, also connected to the torsion spring, both spools of which are located in the spool housing. Accordingly, extension of the pull cord and rotation of the rewind housing pulley against the tension in the torsion spring wound on the bottom spool as the torsion spring reverse-winds on the top spool, facilitates an increasing tension in the pull cord. In another embodiment the pull cord is wound directly on the rotatable top spool and is unwound against the tension in the torsion spring as the torsion spring reverse-winds from the bottom spool onto the top spool.

Abstract: A muffler for a two-cycle internal combustion engine used to power lawn and garden equipment includes two mating shells and two plates, sandwiching a spark arrestor screen, are disposed between the shells to form first and second expansion chambers between each plate and the adjacent shell. The first chamber includes an opening for coupling to the exhaust port of the engine. Within one plate is stamped a first depression, a baffle within that depression, and an elongated depression separate from the first depression. In the other plate is stamped a second depression that is punched with an air passage. When mated, an attenuating tube having an entrance in the second of the two expansion chambers and an exit into the atmosphere is formed. The first and second depressions cooperate to expose a large area of the spark arrestor screen to a flow of exhaust gas from the first chamber, through the baffle and into the second chamber.