A plurality of bistable compliant links are pivotally attached to one another, each of the links having a compliant section and first and second rigid sections extending from the compliant section. The links are pivotally attached to one another via the first and second rigid sections, such that when the links are pivoted with respect to each other past a threshold position toward a closed position, the links are biased toward the closed position by forces created by the compliant sections, and when the links are pivoted with respect to each other past the threshold position toward an open position, the links are biased toward the open position by forces created by the compliant sections. The forces created by the compliant sections biasing the links toward the closed position and biasing the links toward the open position are caused by elastic deformation of the compliant sections.

A band includes a pair of members moveable between an open position adapted to receive an article in a channel and a closed position adapted to retain the article within the channel. Each of the members includes a plurality of pivotally attached bistable compliant links, such that when the links are pivoted past a threshold position toward the closed position, the links are biased toward the closed position and such that when the links are pivoted past the threshold position toward the open position, the links are biased toward the open position. An actuator linkage is pivotally connected to at least one of the links, the actuator linkage including an engagement end protruding into the channel when the members are in the open position, such that movement of the article into the channel causes the article to contact and exert actuation forces on the engagement end.

A band includes a pair of members moveable between an open position adapted to receive an article in a channel and a closed position adapted to retain the article within the channel. Each of the members includes a plurality of pivotally attached bistable compliant links, such that when the links are pivoted past a threshold position toward the closed position, the links are biased toward the closed position and such that when the links are pivoted past the threshold position toward the open position, the links are biased toward the open position. An actuator linkage is pivotally connected to at least one of the links, the actuator linkage including an engagement end protruding into the channel when the members are in the open position, such that movement of the article into the channel causes the article to contact and exert actuation forces on the engagement end.

A band includes a pair of members moveable between an open position adapted to receive an article in a channel and a closed position adapted to retain the article within the channel. Each of the members includes a plurality of pivotally attached bistable compliant links, such that when the links are pivoted past a threshold position toward the closed position, the links are biased toward the closed position and such that when the links are pivoted past the threshold position toward the open position, the links are biased toward the open position. An actuator linkage is pivotally connected to at least one of the links, the actuator linkage including an engagement end protruding into the channel when the members are in the open position, such that movement of the article into the channel causes the article to contact and exert actuation forces on the engagement end.

A band includes a pair of members moveable between an open position adapted to receive an article in a channel and a closed position adapted to retain the article within the channel. Each of the members includes a plurality of pivotally attached bistable compliant links, such that when the links are pivoted past a threshold position toward the closed position, the links are biased toward the closed position and such that when the links are pivoted past the threshold position toward the open position, the links are biased toward the open position. An actuator linkage is pivotally connected to at least one of the links, the actuator linkage including an engagement end protruding into the channel when the members are in the open position, such that movement of the article into the channel causes the article to contact and exert actuation forces on the engagement end.

Watch bands can be provided with an ability to dynamically adjust the fit of a watch against a wrist of a user. One or more of a variety of tensioners can be provided with a shape-memory alloy that responds to a stimulus to adjust a fit of the band. Such stimulus can be from user or actively applied by the watch.

Watch bands can be provided with an ability to dynamically adjust the fit of a watch against a wrist of a user. One or more of a variety of tensioners can be provided with a shape-memory alloy that responds to a stimulus to adjust a fit of the band. Such stimulus can be from user or actively applied by the watch.