Abstract: An exercise device includes a housing and one or more receptacles for receipt of a jointed body part, positioned to the outside of the housing, wherein each of the receptacles is biased toward the housing and independently repositionable away from the housing against a substantially constant bias force at all positions relative to the housing. In the disclosed finger exercising embodiment the housing includes a base defining a front surface for engagement with the fingers during retraction of the finger receptacles and an inner surface over which the cords pass toward the finger receptacles. A joint isolation element, such as a flexible band, is positioned at the front surface of the base, whereby the user keeps one or more fingers engaged with the housing while one or more other fingers can be extended against resistance.

Abstract: A multi-functional finger exercise device includes mechanisms for both compression exercises and extension exercises. The compression exercises are provided by a plunger biased away from a central housing. The extension exercises are provided by an elastic member with an anchor exposed from the housing. The tension provided by each of the compression mechanism and extension mechanism is adjustable.

Abstract: An exercise device includes a housing and one or more receptacles for receipt of a jointed body part, positioned to the outside of the housing, wherein each of the receptacles is biased toward the housing and independently repositionable away from the housing against a substantially constant bias force at all positions relative to the housing. In the disclosed finger exercising embodiment the housing includes a base defining a front surface for engagement with the fingers during retraction of the finger receptacles and an inner surface over which the cords pass toward the finger receptacles. A joint isolation element, such as a flexible band, is positioned at the front surface of the base, whereby the user keeps one or more fingers engaged with the housing while one or more other fingers can be extended against resistance.

Abstract: A multi-functional finger exercise device includes mechanisms for both compression exercises and extension exercises. The compression exercises are provided by a plunger biased away from a central housing. The extension exercises are provided by an elastic member with an anchor exposed from the housing. The tension provided by each of the compression mechanism and extension mechanism is adjustable.

Abstract: A quick release musical instrument strap attachment device comprising a strap attachment unit which comprises a female receiving quick release portion having base portion and a hollow body portion for receiving and locking a male quick release portion and a first cord having both ends thereof attached to the base portion of the female quick release portion to form a loop and a musical instrument attachment unit comprising a male quick release insertion unit which comprises a base portion and an insertion means adapted for insertion and locking into the hollow body portion of the female receiving quick release portion and a second cord having both ends thereof attached to the base portion of the male receiving quick release portion to form a loop. The strap attachment unit being attachable to a strap and the musical instrument attachment unit being attachable to a musical instrument.