Printing – Rolling contact machines – Rotary
Patent
1993-12-03
1995-05-23
Eickholt, Eugene H.
Printing
Rolling contact machines
Rotary
271 2, 271 5, 271 14, 271 99, B65H 908, B65H 500
Patent
active
054171580
ABSTRACT:
A reciprocator sleeve for use in a printing machine having an envelope feeder is disclosed which enables the feeder to convey windowed envelopes from a stack and into a pair of pinch rollers without marking the windows of the envelopes. The sleeve is adapted for use with the feeder reciprocator upon which the bottommost envelope in the stack is retained for its conveyance therefrom and into a pair of pinch rollers. The reciprocator has a cylindrical head which is reciprocatingly rotated about its longitudinal axis to provide a generally arcuate feed and return stroke between the stack and the pinch rollers, and a shaft extending from an end of the head to a drive assembly. The head is in fluid communication with a vacuum source and has at least one vacuum port for applying a negative pressure differential to the front face of the bottommost envelope in the stack to retain that envelope for its conveyance on the feed stroke from the envelope stack and into the pinch rollers. The sleeve is formed of a tubular member which receives the reciprocator head and has an outer surface with at least one fenestration therethrough in registration with a corresponding vacuum port of the head. The tubular member is formed of a polymeric material effective to allow the windowed opening of each envelope in the stack to travel unmarked over its outer surface as each envelope is drawn from the reciprocator head on the return stroke thereof.
REFERENCES:
patent: 3586312 (1971-06-01), Sammons
patent: 3796426 (1974-03-01), Schilpf
patent: 3892400 (1975-07-01), Harrison
patent: 3944211 (1976-03-01), Rasmussen et al.
patent: 4082262 (1978-04-01), Konars et al.
patent: 4118025 (1978-10-01), Konars et al.
patent: 4184670 (1980-01-01), Rosendahl
patent: 4239117 (1980-12-01), Konars et al.
patent: 4269405 (1981-05-01), Mitzel
patent: 4299325 (1981-11-01), Quinton et al.
patent: 4324394 (1982-04-01), Mitzel
patent: 4355796 (1982-10-01), Day
patent: 4375190 (1983-03-01), Quinci et al.
patent: 4431323 (1984-02-01), Kulow
patent: 4986522 (1991-01-01), Paulson
patent: 5072922 (1991-12-01), Paulson
patent: 5088717 (1992-02-01), Hamanaka et al.
patent: 5115918 (1992-05-01), DeWitt et al.
patent: 5261996 (1993-11-01), Rossini
patent: 5265868 (1993-11-01), Bowser et al.
Dual Feed Super Jet, Halm Industries Product Literature.
Super Jet Press Refractor, Specs-Halm Industries.
Jet Press Perfector Specs-Halm Industries.
Hostalen.RTM. Gur Product Guide, Hoescht Celanese Corp.
1900.RTM. "UHMW Polyethylene", Modern Plastics Encycl. pp. 60-61, vol. 68, No. 11 (Oct. 91).
Stein, H. L., "Ultrahigh Molecular Weight Polyethylenes (UHMWPE)" Eng., Materials Handbook.
Eickholt Eugene H.
Multi-Plastics, Inc.
LandOfFree
Reciprocator sleeve for use in a printing press machine having a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reciprocator sleeve for use in a printing press machine having a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reciprocator sleeve for use in a printing press machine having a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2133878