Envelope opening apparatus and method

Details Envelope opening apparatus and method Envelope opening apparatus and method

1976-12-29

1978-11-07

Sipos, John

Package making

Methods

53381R, 83912, B65B 4326

Patent

active

041238907

ABSTRACT:
Apparatus and method for opening an envelope upon three sides. The apparatus employs a circular rotating wheel which supports a plurality of complementary pairs of paddles which are designed to open at predetermined times to receive an envelope and close upon the envelope in a protective manner. The envelope is first received in the paddles with the leading edge thereof slightly exposed. As the paddles progress in their circular motion, the leading edge is engaged by means which weaken the edge. Thereafter, the paddles are opened and a conveyor below the paddles repositions the envelope between the paddles so as the trailing and bottom edges thereof are slightly exposed. As the paddles progress, the trailing and bottom edges are likewise weakened after which the envelope is discharged to an opening means.
Opening means are provided which receive the envelope and convey the envelope by means of a belt over idler pulleys which cause parallel shearing forces to the sides of the envelope by reverse flexing of the envelope to crack the weakened edges. The envelope is then passed between a belt and a roller through which a vacuum is induced to grip the opposite panels of the envelope and exert a separating force perpendicular to the panels to complete opening of the envelope and expose the contents thereof.

REFERENCES:
patent: 3060075 (1962-10-01), Kincaid
patent: 3286926 (1966-03-01), Hock
patent: 3691726 (1972-09-01), Stephens
patent: 3726454 (1973-04-01), Robbins
patent: 3764049 (1973-10-01), Russell et al.

Affiliated with

Also associated with

Rating

Envelope opening apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Envelope opening apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Envelope opening apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2228467