B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
B60T 13/72 (2006.01) B60T 11/224 (2006.01) B60T 11/228 (2006.01) B60T 17/02 (2006.01) F15B 15/18 (2006.01) F16D 55/00 (2006.01)
Patent
CA 2497231
The invented apparatus is designed for use with a tow vehicle and trailer combination. The apparatus comprises a controller, a vacuum supply sensor, and a sensor unit used to measure the barometric pressure and/or elevation of the current location of the tow vehicle/trailer combination. Using information from the sensor unit, the controller determines a vacuum pump activation level and/or deactivation level appropriate for the ambient pressure in which the apparatus is operating. By monitoring the signal supplied by the vacuum supply sensor and by operating a vacuum pump switch signal, the controller maintains a supply of vacuum between the activation and deactivation levels. In this manner, the controller can compensate for changes in local conditions so as to operate the vacuum pump in an efficient manner while maintaining an adequate supply of vacuum for operation of the trailer brake system.
Bludot Inc.
Finlayson & Singlehurst
LandOfFree
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