초록 ▼

A one-piece, elongated, molded plastic clamp member for forming poster and picture frames or other sheet holders has a base portion, rigid outer, front and inner wall portions connected to a lateral edge of the base portion by a web type hinge, and one or more planar spring portions connected to the

A one-piece, elongated, molded plastic clamp member for forming poster and picture frames or other sheet holders has a base portion, rigid outer, front and inner wall portions connected to a lateral edge of the base portion by a web type hinge, and one or more planar spring portions connected to the base portion and engaging the front and inner wall portions at their juncture to provide overcenter biasing between the closed and open positions of the clamp member. The base portion may be attached to a separate backing panel or may be extended to form the backing panel of a frame.

대표청구항 ▼

An elongated, molded plastic, one piece clamp member for use with a backing panel to form frames and sheet holders comprising; an elongated planar base portion adapted for attachment to the backing panel; outer and front wall portions rigidly connected to one another, said outer wall portion being c

An elongated, molded plastic, one piece clamp member for use with a backing panel to form frames and sheet holders comprising; an elongated planar base portion adapted for attachment to the backing panel; outer and front wall portions rigidly connected to one another, said outer wall portion being connected to one lateral edge of said base portion by a web of reduced thickness forming a first hinge, said front wall having a free edge; an inner wall portion rigidly connected to said front wall portion adjacent the free edge thereof; at least one post rigidly connected to said base portion adjacent the opposite lateral edge from said hinge, said post having a free end; and a rectangular spring member connected to the free end of said post by a web of reduced thickness forming a second hinge, said spring member being of greater length than the minimum distance between the line of juncture of said front and inner wall portions and said second hinge whereby said spring member exerts a force biasing said front wall portion toward the plane of said base portion when said line of juncture is closer to said plane than a plane containing the axes of said first and second hinges.