Patent Number: 6,250,909

Title: Web clamp for thermoforming processes

Abstract: In a preferred embodiment, a web clamp arrangement for thermoforming processes, the web clamp arrangement including: first and second web clamp assemblies to be disposed, respectively, at front and rear ends of a mold base to clamp a web of thermoforming material against a pressure box disposed above the mold base; each of the first and second web clamp assemblies including a normally horizontal clamp bar attached to two vertical rods, which rods force the clamp bar against a lower surface of the web to force the web against an edge of the pressure box; and the normally horizontal clamp bar being movably attached to distal ends of the vertical rods, such that vertical misalignment of the clamp bar during clamping of the web against the edge of the pressure box is accommodated by relative movement of the normally horizontal clamp bar and the distal ends of the vertical rods such as to prevent damage to the first and second web clamp assemblies.

Inventors: Segen, Jr.; Edward D. (Wilton, CT)

Assignee: Edward D. Segan & Co., Inc.

International Classification: B29C 51/26 (20060101); B29C 51/10 (20060101); B29C 051/26 ()

Expiration Date: 06/26/2018