Patent ID: 11964520
Assignee: SYSGRATION LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B  H | IPC B  H

Claim 3:
4. The method as claimed in claim 2, wherein the valve coat includes a bore defined therethrough, the air pressure sensor unit includes an air pressure hole, the positioning portion includes a plug and a valve stem,
in the step of placing, the plug partially extends into the air pressure hole, the valve stem partially extends into the bore, the plug is partially located in the cavity, the valve stem is partially located in the cavity, a gap is formed between the pre-set portion and the inner bottom of the cavity;
in the step of pouring, the rubber compound does not flow to the air pressure hole and the bore by the plug and the valve step, the rubber compound is located around the plug in the cavity and forms a passage of the case, the rubber compound fills the gap between the pre-set portion and the inner bottom of the cavity, and
in the step of hardening, the tire pressure monitoring sensor is removed from the cavity, the passage communicates with the air pressure hole.