Assembly for monitoring helmet thermal conditions

Details Assembly for monitoring helmet thermal conditions Assembly for monitoring helmet thermal conditions

1991-09-20

1993-04-06

Mullen, Thomas

Communications: electrical

Condition responsive indicating system

Specific condition

2 5, 340573, 340691, G08B 1700, A42B 300

Patent

active

052007367

ABSTRACT:
An assembly is disposed on a helmet for monitoring predetermined thresholds of ambient thermal condition of the helmet. Such assembly includes at least one thermistor for sensing the status of an ambient thermal condition and a signal comparator for detecting each predetermined threshold. Individual LED's visually indicate when each predetermined threshold is reached, while an audible alarm indicates when a hazardous predetermined threshold is reached. The audible alarm is further utilized to indicate if the battery voltage is under a predetermined threshold which is predicated on the breakdown voltage of a reference diode when a test switch is closed. A temperature responsive switch is also included to conserve the life of the battery by activating and deactivating the assembly about a predetermined temperature level.

REFERENCES:
patent: 3201771 (1965-08-01), Proulx
patent: 4196429 (1980-04-01), Davis
patent: 4468656 (1984-08-01), Clifford et al.
patent: 4567474 (1986-01-01), Wolin
patent: 4648131 (1987-03-01), Kawaguchi et al.
patent: 4719462 (1988-01-01), Hawkins
patent: 4814766 (1989-03-01), Dominque
patent: 4914422 (1990-04-01), Rosenfield et al.
patent: 5023597 (1991-06-01), Salisbury

Affiliated with

Also associated with

Rating

Assembly for monitoring helmet thermal conditions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Assembly for monitoring helmet thermal conditions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Assembly for monitoring helmet thermal conditions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-539635