Separating a web at a line of weakness

Details Separating a web at a line of weakness Separating a web at a line of weakness

1997-11-25

1999-10-12

Rachuba, M.

Severing by tearing or breaking

Breaking or tearing apparatus

Plural breakers

225 93, 225103, 225104, B26F 300

Patent

active

059643897

ABSTRACT:
This invention pertains to apparatus and methods for breaking a web along spaced lines of weakness. The invention includes a compact breaker bar assembly comprising at least one breaker bar in a gap. The apparatus also includes driving apparatus to power the breaker bar assembly in breaking the web. In some embodiments, one or more breaker bars engage and stress the web along a single transverse line across the web, breaking the web. In other embodiments, at least first and second breaker bars engage and stress the web along spaced first and second transverse lines across the web. The breaker bars can be mounted on one or more rotary elements, or can be mounted on one or more belts or other breaker bar carriers, traversing closed-loop paths. In preferred embodiments, the breaker bar assembly comprises at least two breaker bars, a first breaker bar following a first straight-line path segment while a second breaker bar follows a second opposing straight line path segment, both breaker bars engaging and stressing the web at the same time, both breaker bars following the straight-line path segments before engaging the web, during engaging and stressing of the web, while breaking the web, and after breaking the web.

REFERENCES:
patent: 2251975 (1941-08-01), Bochow
patent: 2874886 (1959-02-01), Piazze
patent: 3148843 (1964-09-01), Turner et al.
patent: 3542267 (1970-11-01), Saburo et al.
patent: 3987949 (1976-10-01), Manning et al.
patent: 3991924 (1976-11-01), Schueler
patent: 4284221 (1981-08-01), Nagel et al.
patent: 4410119 (1983-10-01), Hathaway
patent: 4529114 (1985-07-01), Casper et al.
patent: 4623081 (1986-11-01), Hain et al.
patent: 4697726 (1987-10-01), Gaucher
patent: 4997119 (1991-03-01), Meschi
patent: 5141142 (1992-08-01), Ramsey
patent: 5362013 (1994-11-01), Gietman, Jr. et al.
patent: 5377929 (1995-01-01), Gietman, Jr. et al.
patent: 5390875 (1995-02-01), Gietman, Jr. et al.
patent: 5427294 (1995-06-01), VandenHeuvel et al.
patent: 5540369 (1996-07-01), Boreali et al.
patent: 5785224 (1998-07-01), Nowakowski

Affiliated with

Also associated with

Rating

Separating a web at a line of weakness does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Separating a web at a line of weakness, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Separating a web at a line of weakness will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-645756