| 摘要 |
<p>STRAIN-RELIEF MEMBER FOR REDUCING TORSIONAL STRAINS IN LINE CORD OF A PERSONAL CARE ELECTRICAL APPLIANCE INVENTOR: ROBERT R. KING A strain-relief member is provided to relieve torsional strains from a two-conductor power supply cord attached to a personal care electrical appliance, such as a hand-held hair dryer, or curling iron. Such torsional strains are primarily those resulting from twisting the wire about its longitudinal axis, as when using a curling iron, rather than from flexing. The strain-relief member is an elongated body of elastomeric material molded about the usual two-conductor line cord. It has a lateral projection or collar on one end thereof adapted to fit into the interior of the personal care electrical appliance to prevent rotation with respect to the appliance. The outer portion of the body member is uniformly tapered along its length on the sides adjacent to single conductors of said cord and has flattened, generally parallel sides extending along the opposite sides which are adjacent to both conductors of the power supply cord. The strain-relief member distributes such torsional bend and flex forces substantially uniformly along the length of the member by providing a uniform are along that portion of the wire which is flexed as a result of application of torsional strains, thus preventing fracture of the power supply cord. 4028-1</p> |
