| 摘要 |
<p>A device for use in the thawing of frozen car door locks consists of a tube (10) of a heat insulating material. The tube has at one end a flat, axial projection (13) designed to be inserted into and to essentially fill the keyhole of the lock. At the same end, the tube edge is formed with a plurality of through-going, radial cuts (15). When the projection is inserted into the keyhole in a frozen lock, and expiration air is blown into the other end of the tube, this air gives off its heat to the outer side of the lock before flowing through the cuts without itself penetrating into the lock. The heat, on the other hand, propagates in the lock and melts the ice formations in it.</p> |
