Overhead projector with vibration control head

Details Overhead projector with vibration control head Overhead projector with vibration control head

1995-03-15

1995-11-07

Cuchlinski, Jr., William A.

Optics: image projectors

Housing

353DIG6, G03B 21132

Patent

active

054651271

ABSTRACT:
An improved overhead projector head is provided that reduces the vibration that can occur in an overhead projector head that is used to project images from an LCD panel placed on the stage of the projector. The improvements comprise adding a mounting plate between the support arm and the head bracket. The mounting plate is cantilevered from the support arm, and the head bracket is supported by spacers placed near the end of the mounting plate that is remote from the support arm. In alternative embodiments, the head bracket may be divided into two pieces separated by foam or other vibration damping material, or a conterweight may be added to the head assembly behind the support arm.

REFERENCES:
patent: 4634246 (1987-01-01), Dreyer, Jr.
patent: 4944578 (1990-07-01), Denison
patent: 4950072 (1990-08-01), Honda
patent: 4986651 (1991-01-01), Vauderwerf
patent: 5120125 (1992-06-01), Behs
patent: 5135301 (1992-08-01), Dreyer, Jr. et al.
patent: 5241333 (1993-08-01), Rodriguez et al.
patent: 5245370 (1993-09-01), Peterson

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