Actief N.v.

American Velcro, Inc.

Edmund Rosa

Joseph Perina

Franklin E Penn

Walter B Fletcher

Jurg Aeschbach

A knitted material is disclosed having on one side a multiplicity of upstanding hook-like engaging elements suitable for repeated face-to-face engagement and disengagement with a material having a multiplicity of upstanding pile loop-like mating engagement elements. The material has a base knitted fabric and a plurality of upstanding monofilamentary members interknitted into the base fabric, with a hook-like engaging element positioned at the upper end of each upstanding member. The engaging element extends transversely of the upstanding member and is configured in cross section to have at least one end generally arcuate in shape and the opposite end tapered. The tapered end has greater flexibility than the arcuate end, and the fastener fabric is engageable in face-to-face relation with a mating loop-type fastener fabric and separated by forces normal to the interfacial plane of engagement.

Apparatus and method for producing knitted hook-type fastener material

A planar mirror having a reflective surface of unusually superior quality formed by a metallized thin-film reflective sheet material in a stretched condition over a unitary frame having a raised integral peripheral ridge extending in an endless path therearound. The metallized thin-film sheet material is secured to the peripheral marginal portion of the frame on the forward side thereof thereby maintaining the stretched condition of the film over the peripheral ridge in a manner which provides uniform tensioning about the periphery of the ridge. A unique apparatus and an improved method of producing such mirrors is also disclosed.

Growing community of inventors

Lowell, MA, United States of America

Edmund Rosa