RICHARD J SHEA
Engineering in Hathorne, MA

License number
Massachusetts 15650
Expiration Date
Jun 30, 1984
Type
Mechanical Engineer
Address
Address
Hathorne, MA 01937
LicenseFiles verified this license of Nov 24, 2016 at the Mass.gov - Consumer Affairs and Business Regulation.

Professional information

Richard Shea Photo 1

Lamp And Lens Retrofit Assembly For Overhead Projector

US Patent:
4023893, May 17, 1977
Filed:
Jun 28, 1976
Appl. No.:
5/700656
Inventors:
Roger T. Hebert - Peabody MA
John A. Pappas - Winthrop MA
Richard J. Shea - Hathorne MA
Assignee:
GTE Sylvania Incorporated - Salem MA
International Classification:
G03B 2114, G03B 2120, F21V 3300
US Classification:
353100
Abstract:
A retrofit assembly for replacing a lens-containing lamp in an overhead projector. The assembly comprises a quartz-halogen lamp, having an internal reflector and an enlarged base removably mounted in the projector, and a lens holding bracket removably mounted in the projector in alignment with the lamp. The bracket is resiliently pivoted toward the lamp and has a tab for striking the lamp base to retain the lens at a predetermined distance from the lamp.

Other General Professional services licenses in Massachusetts