External air-flow-through valve stem mounted tire pressure...

Details External air-flow-through valve stem mounted tire pressure... External air-flow-through valve stem mounted tire pressure...

2007-05-16

2010-02-02

Hofsass, Jeffery (Department: 2612)

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

Reexamination Certificate

active

07656281

ABSTRACT:
A wireless tire pressure monitoring apparatus is adapted to install on a conventional tire valve stem. The apparatus includes capability of refilling air through the sensor built-in valve stem, without needing to remove the apparatus. The pressure monitoring apparatus further includes a locking device to secure the mounting of the apparatus on the tire valve stem, with the additional benefit of discouraging apparatus thieves.

REFERENCES:
patent: 6535116 (2003-03-01), Zhou
patent: 6799455 (2004-10-01), Neefeldt et al.
patent: 6993962 (2006-02-01), Ko

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