| 摘要 |
PCT No. PCT/DE88/00241 Sec. 371 Date Jan. 10, 1990 Sec. 102(e) Date Jan. 10, 1990 PCT Filed Apr. 22, 1988 PCT Pub. No. WO89/00511 PCT Pub. Date Jan. 26, 1989.A tire pressure sensor for monitoring pressure in the tire of a motor vehicle wheel and comprising a reference pressure chamber, two contact members extending through a bushing insulator arranged in the base of the reference pressure chamber, and an electrically conducting diaphragm that separates the reference pressure chamber from the tire interior. The diaphragm has two contact zones that engage sequentially the two contact members upon being bent in response to air pressure in the tire interior reaching, respectively, a first value and a second value greater than the first value.
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