초록 ▼

A pressure indicating system for continually monitoring tire pressure in a moving vehicle in which a pressure sensing means attached to the wheel activates an alarm to alert a driver that the pressure in one of his tires is abnormally low. A magnet is shifted by the pressure sensing means to activat

A pressure indicating system for continually monitoring tire pressure in a moving vehicle in which a pressure sensing means attached to the wheel activates an alarm to alert a driver that the pressure in one of his tires is abnormally low. A magnet is shifted by the pressure sensing means to activate a Hall effect switch located on a non-rotating portion of the vehicle to trigger the alarm. The pressure sensing means also acts to relieve high pressure above a predetermined pressure from the tire to prevent over pressurizing of the tire. The alarm indicates which of the tires is at low pressure and preferably comprises an inexpensive electronic system having a flashing light for indicating which tire is at low pressure.

대표청구항 ▼

A pressure indicating system for continually monitoring tire pressure in a moving vehicle comprising: pressure sensing means adapted to be attached to a vehicle wheel in communication with a pneumatic tire, a permanent magnet means operable by said pressure sensing means in response to changes in pr

A pressure indicating system for continually monitoring tire pressure in a moving vehicle comprising: pressure sensing means adapted to be attached to a vehicle wheel in communication with a pneumatic tire, a permanent magnet means operable by said pressure sensing means in response to changes in pressure in the tire between a first position when the pressure in the tire is above a predetermined lower limit and a second position when the pressure in the tire falls below said predetermined lower limit, a Hall effect magnetic switch means without opening and closing contacts to be carried by a non-rotating portion of the vehicle for activation by said permanent magnet means when said magnet means is in said second position; and an alarm system which is turned on when said Hall switch means is activated.