초록 ▼

A screen printing frame is formed with hollow extruded metal frame members joined at their ends by extruded metal interfitting connectors which are retained within the ends of their associated frame members by frictional engagement supplemented by a bonding agent. The force required to establish the

A screen printing frame is formed with hollow extruded metal frame members joined at their ends by extruded metal interfitting connectors which are retained within the ends of their associated frame members by frictional engagement supplemented by a bonding agent. The force required to establish the frictional engagement is maintained in the preferred embodiment by elastic flexure of a bowed side wall on each connector arm. The structural members may have prefinished surfaces such as anodized surfaces and are joined together without welding as would mar such surfaces during the welding operation. The amount of metal used for the extrusions has been minimized for cost reduction and to obtain a lightweight structure. Grooves on the interfacing surfaces of the connector arms and the frame members cooperate to form an interstitial lattice which receives a bonding agent. Miter joints at the corners of the structure are sealed by corner webs on the connectors in combination with a bonding agent.

대표청구항 ▼

A screen printing frame structure comprising: a screen; four metal tubular frame members having hollow interiors assembled into a quadrilateral configuration with the screen being bonded at its edges to said members; rigid internal connectors of metal having positioning surfaces at right angles to e

A screen printing frame structure comprising: a screen; four metal tubular frame members having hollow interiors assembled into a quadrilateral configuration with the screen being bonded at its edges to said members; rigid internal connectors of metal having positioning surfaces at right angles to each other telescoped into the hollow interiors of adjacent frame members at their ends and rigidly positioning the frame members to form right angle corners for the structure, each said connector having two arms, a resilient portion on each of said arms being deflected when the arm is telescoped into a frame member so that each of said arms is frictionally engaged within its associated frame member; the hollow tubular frame members having outer surfaces free from recesses or protrusions for collecting solvent, sealing means at the intersections of the ends of the tubular frame members to prevent a liquid path into the interior of the hollow members, and bonding means for bonding facing surfaces on each of said arms and said frame members to supplement the frictional engagement and to unite the tubular frame members and internal connectors without use of external fasteners.