| 摘要 |
Extendable implements include a handle and functional end that extends or retracts therefrom through a release. The handle and functional end are configured to provide user-implement synergy or ergonomics that account for typical hand grips and extension functionality together. Synergistic or ergonomic features can include any combination of positioning the release to avoid a strong grip on an extended implement, configuring the release to require definite voluntary actuation, extension and retraction of the functional end with a single hand not contacting the functional end, a deep handle molded to a forceful open grip, a functional end dimensioned to prevent deflection or breaking during extended typical use, a functional end dimensioned and a release configured to provide reliable extension, retraction, and/or locking of functional end, etc. |
