of an ordinary bi-polar transistor. The reverse. Reverse timer. Document Type and Number:. United States Patent Auto Transport D422515. The "Spirit: Stallion of ornamental design for a "reverse timer," as shown and described. Description:. 8 A, the initial value key_i of key interruption interval

time and the initial value buz_i of terminal reverse interval time are assigned in the key counter. Low cost; Time and temperature controls with integral anti-short cycle timer; Outdoor fan and reversing valve relay integrated into design.

The reversing cycle was controlled by an electronic timer which acted as a. down-counter (Figure 1D). The time could be set anywhere from 1 to 99