Dan B Kee

Address:

1 Mtn Brk Ct, Bentonville, AR 72712

Phone:

479 271-8669

VIN:

1GCEC14X58Z109524

Make:

CHEVROLET

Model:

SILVERADO 1500

Year:

2008

US Patent:

6367888, Apr 9, 2002

Filed:

Aug 29, 2000

Appl. No.:

09/652233

Inventors:

Dan B. Kee - Bentonville AR 72712
Clark W. Gray - Bentonville AR 72712

International Classification:

B60T 1716

US Classification:

303 89, 303123, 180287, 455 99

Abstract:

There is disclosed a theft prevention system for trailers interacting with the customary pneumatic trailer braking system having spring actuated parking brakes that apply when in absence of pressure in an air supply line to the trailer from a tractor-mounted compressed air tank. A normally closed solenoid valve is connected in series with the pressurized air supply line that supplies air to release the trailer parking brakes and a signal receiver adapted to receive an electrical signal from a transmitter in the tractor cab must be caused to actuate the solenoid to open the valve to release the trailer parking brakes. The signal from the transmitter to the receiver may be a dc, ac, or high frequency signal transmitted over the normally provided electrical cable from tractor to trailer or may be a radio transmitted signal wherein of the kind employed for garage door openers. The solenoid valve is preferably provided with a pneumatic latch so that the parking brakes will remain released as long as air pressure is provided to the trailer once an enabling signal is received by the receiver. The signal transmitter is provided with appropriate security to prevent unauthorized use which may be a key switch, a key pad for entry of an identification number, a magnetic strip card reader or other conventional device.

US Patent:

6338534, Jan 15, 2002

Filed:

Dec 2, 1999

Appl. No.:

09/454236

Inventors:

Dan B. Kee - Bentonville AR 72712
Clark W. Gray - Bentonville AR 72712

International Classification:

B60T 1716

US Classification:

303 89, 303123, 180287

Abstract:

There is disclosed a theft prevention system for trailers with the customary pneumatic trailer braking system. A normally closed solenoid valve is connected in the line that supplies air to release the trailer parking brakes and a signal receiver adapted to receive an electrical signal from a transmitter in the tractor cab must be caused to actuate the solenoid to open the valve to release the trailer parking brakes. The signal from the transmitter to the receiver may be transmitted over the electrical cable from tractor to trailer or may be a radio transmitted signal. The solenoid valve is provided with a pneumatic latch so that the parking brakes will remain released as long as air pressure is provided. The signal transmitter is provided with security to prevent unauthorized use which may be a key switch, a key pad for entry of an identification number, a magnetic strip card reader or other device. The solenoid valve and receiver are secured in a locked cabinet and a by pass valve is also located within the cabinet.