Paul P Cook

US Patent:

40052877, Jan 25, 1977

Filed:

Jul 28, 1975

Appl. No.:

5/599474

Inventors:

Paul A. Cook - Dallas TX

Assignee:

Recognition Equipment Incorporated - Dallas TX

International Classification:

H01J 502

US Classification:

250239

Abstract:

Apparatus for attaching a nose section to the main body of a hand-held optical reader (Wand) is provided to accommodate the replacement of internal lamps illuminating a field of information. A nose attachment having a centrally located aperture encompassed by an integral and externally threaded cylindrical extension is secured to the nose section. The aperture and cylindrical extension are aligned and concentric with the optical image path of the Wand. In attaching the nose section to the Wand main body, the cylindrical extension is passed through an aperture in a partitioning frame of the Wand into which the lamps are seated. A screw-on cap, having a centrally located aperture with internal helical threads complementing the external threads of the nose attachment extension, is screwed onto the extension to secure the nose section to the partitioning frame. An outwardly extending flange integrally formed on the cap extends through opposing apertures of the Wand outer covers to accommodate access by hand. When the lamps are to be removed, a tangential force couple is applied by hand to the flange of the cap to detach the nose section, and thereby expose the lamps.