Abstract: This application relates to improvements in environments for microbial testing. Exemplary embodiments provide a uniquely configured tray containing an environment conditioning material, such as an oxygen scavenger material, for use with a cassette assembly. Furthermore, some embodiments provide a cutting mechanism that allows the tray to be reliably breached, thereby exposing the material inside to the environment. Some embodiments can cut open the material with specially-configured cutter teeth, which can easily be deployed by twisting or pushing two halves of the cassette assembly.

Abstract: This application relates to improvements in environments for microbial testing. Exemplary embodiments provide a uniquely configured tray containing an environment conditioning material, such as an oxygen scavenger material, for use with a cassette assembly. Furthermore, some embodiments provide a cutting mechanism that allows the tray to be reliably breached, thereby exposing the material inside to the environment. Some embodiments can cut open the material with specially-configured cutter teeth, which can easily be deployed by twisting or pushing two halves of the cassette assembly.

Abstract: A golf club training aid for improving a golf swing, with the golf club including a club head, a club shaft attached to the club head that rotates within the club head, a stop that limits the rotational range of the club shaft in respect to the club head, and a tension actuator that attaches to the club shaft and club head and provides tension against the rotation of the club head about the club shaft. The tension provided by the tension actuator is overcome when the club shaft is rotated, by proper hand rotation, during a club swing to create a rotational force greater than the tension force, whereby the club head rotates to a rest position—the end of the rotational range of the stop—and the club face makes solid contact with a golf ball. If proper hand rotation does not occur during a swing, the club head and stop will remain in an open position upon contact with a golf ball and the club head will, at that point of contact, move backward and result in angled contact with a golf ball during the golf swing.

Abstract: A golf club training aid for improving a golf swing, with the golf club including a club head, a club shaft attached to the club head that rotates within the club head, a stop that limits the rotational range of the club shaft in respect to the club head, and a tension actuator that attaches to the club shaft and club head and provides tension against the rotation of the club head about the club shaft. The tension provided by the tension actuator is overcome when the club shaft is rotated, by proper hand rotation, during a club swing to create a rotational force greater than the tension force, whereby the club head rotates to a rest position—the end of the rotational range of the stop—and the club face makes solid contact with a golf ball. If proper hand rotation does not occur during a swing, the club head and stop will remain in an open position upon contact with a golf ball and the club head will, at that point of contact, move backward and result in angled contact with a golf ball during the golf swing.