End of paper roll detection assembly

Details End of paper roll detection assembly End of paper roll detection assembly

1978-03-24

1980-05-20

Braun, Fred L.

Electricity: magnetically operated switches, magnets, and electr

Permanent magnet-actuated switches

226 11, 242 57, 340675, H01H 900, G08B 2100, B65H 2500

Patent

active

042041805

ABSTRACT:
An end of paper roll detection assembly for detecting the end or near-end of a paper roll on a hollow core is provided. The end of paper roll detection assembly includes a detecting bar pivotally mounted on a retaining bar biased towards the side face of the paper roll which is supported on an adjustable paper roll retaining member. When paper is consumed the core is lowered towards the retaining member until the core is aligned with the detecting bar which passes into the hollow core thereby actuating a switch for generating a signal indicating that a predetermined amount of paper remains on the roll. The switch may be a reed switch closed by a permanent magnet secured to the retaining bar or a microswitch operated by the retaining bar. The retaining bar pivots towards the paper roll by action of a pulsating electro-magnet or a spring biasing the retaining bar towards the paper roll.

REFERENCES:
patent: 3123268 (1964-03-01), Gagg
patent: 3286249 (1966-11-01), D'Angelo
patent: 3800254 (1974-03-01), Beery
patent: 3908810 (1975-09-01), Denley
patent: 3938119 (1976-02-01), Schwartz

Affiliated with

Also associated with

Rating

End of paper roll detection assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with End of paper roll detection assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and End of paper roll detection assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-451793