Crane boom electrostatic . . . alarm

Details Crane boom electrostatic . . . alarm Crane boom electrostatic . . . alarm

1990-04-30

1991-03-19

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

324 725, 340662, 340664, G83

Patent

active

050014650

ABSTRACT:
A plurality of electrostatic field proximity sensors are mounted upon a crane boom. The sensors are capacitive elements and include an antenna. The sensors are electrically connected in parallel with a single wire. A summing amplifier is coupled to the sensors for detecting changes in flux fields, which changes could signal a dangerous condition. The sensors can comprise an electrically insulating body having first and second ends with a conductive member attached to one of the ends. A mounting means is provided at the other one of the ends. A resistor can be electrically connected between the ends to discharge excess static charge and to allow detection of missing sensors.

REFERENCES:
patent: 2615969 (1952-10-01), Albrecht
patent: 4064997 (1977-12-01), Holland et al.

Affiliated with

Also associated with

Rating

Crane boom electrostatic . . . alarm does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Crane boom electrostatic . . . alarm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crane boom electrostatic . . . alarm will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2013103