| 摘要 |
The invention relates to a heat-generating sole for foot coverings, which sole has at least one cavity or a cavity system (4) which can be connected to the air in the interior of the foot covering by non-return valve members (6) in the rear part of the sole and throttle opening members (7, 8) in the front part of the sole. In use, the air enclosed in the cavity is compressed, with the application of heat, and pressed out through the throttle opening members (7, 8), the air being sucked in gradually from the interior of the foot covering through the non-return valve members (6) into the cavity or the cavity system (4). <IMAGE> |
