Method of monitoring the power spring of a spring brake...

Details Method of monitoring the power spring of a spring brake... Method of monitoring the power spring of a spring brake...

2005-05-03

2005-05-03

Trieu, Van T. (Department: 2636)

Communications: electrical

Land vehicle alarms or indicators

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

C340S454000, C188S00111E, C188S107000

Reexamination Certificate

active

06888451

ABSTRACT:
A method of monitoring the condition of a power spring of a pneumatic spring brake actuator of a vehicle by comparing the stroke of the push rod during normal braking and by actuating the parking brake, wherein a defective power spring is indicated when the difference in the push rod stroke falls below a predetermined minimum. The brake actuator may also include a sensor determining the push rod stroke and signal a defective power spring.

REFERENCES:
patent: 3741612 (1973-06-01), Ando
patent: 3759147 (1973-09-01), Johnsson et al.
patent: 3800668 (1974-04-01), Valentine
patent: 3829170 (1974-08-01), Rockwell et al.
patent: 4636010 (1987-01-01), Adachi et al.
patent: 4793449 (1988-12-01), Smith
patent: 4960036 (1990-10-01), Gummer et al.
patent: 5308153 (1994-05-01), Kidston et al.
patent: 5713238 (1998-02-01), Pierce et al.
patent: 6255941 (2001-07-01), Osterman et al.
patent: 6417768 (2002-07-01), Osterman et al.
patent: 6623088 (2003-09-01), Roden et al.
patent: WO 0233283 (2002-04-01), None
patent: WO 02033283 (2002-04-01), None
PCT/US2004/008970 International Search Report.

Affiliated with

Also associated with

Rating

Method of monitoring the power spring of a spring brake... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of monitoring the power spring of a spring brake..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of monitoring the power spring of a spring brake... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3442493