Hinged lid latching mechanism

Details Hinged lid latching mechanism Hinged lid latching mechanism

1995-06-07

1997-12-02

Dye, Rena

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428134, 428139, 206521, 220 423, 220339, 229406, B65D 8102, B65D 8530

Patent

active

056933886

ABSTRACT:
The invention relates to a mold apparatus and a process for forming a lid latching mechanism in a thermoplastic container. The lid latching mechanism features a large, trapezoidally-shaped opening hole. The trapezoidal shape has been found to reduce the amount of tearing that can occur along the edges of an opening formed during the thermoforming process. The opening is created by the engagement between a fixed shear key mounted in a first mold member and a movable shear key which has a trapezoidally-shaped cutting surface and is mounted in a second mold member. The movable key travels along an inclined path as the mold members close on a preheated thermoplastic sheet to form a container.

REFERENCES:
patent: 3968921 (1976-07-01), Jewell
patent: 3984027 (1976-10-01), Smith
patent: 4079880 (1978-03-01), Edwards
patent: 4446088 (1984-05-01), Daines
patent: 4909721 (1990-03-01), Warburton
patent: 5094355 (1992-03-01), Clark et al.
patent: 5162123 (1992-11-01), Grimes
patent: 5474728 (1995-12-01), Castner et al.

Affiliated with

Also associated with

Rating

Hinged lid latching mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hinged lid latching mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hinged lid latching mechanism will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-799554