U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Optical guidance system and apparatus

Patent 4856896 Issued on August 15, 1989. Estimated Expiration Date: Icon_subject October 16, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

2559415

3138779

3821697

3873210

3885876

Visual glide path beacon system Patent #: 4064424
Issued on: 12/20/1977
Inventor: Hergenrother

Inventor

Assignee

Application

No. 07/109622 filed on 10/16/1987

US Classes:

356/153, Alignment of axes nominally coaxial340/955, Plural colors356/399BY ALIGNMENT IN LATERAL DIRECTION

Examiners

Primary: Evans, F. L.

Attorney, Agent or Firm

International Classes

G08G 5/06 (20060101)
G08G 5/00 (20060101)
B64F 1/22 (20060101)
B64F 1/00 (20060101)

Abstract

A unitary optical guidance system and apparatus directs operators of vehicles such as airplanes, watercraft, trucks, and automobiles along a path or to a predetermined location (e.g., parking an aircraft at a terminal gate or landing an aircraft on a runway) with a high degree of accuracy. The apparatus projects one or a plurality of different colored rays of light in separate and substantially parallel colored light lanes. Light from the apparatus generally is directed at an incident angle with respect to the operator of an approaching vehicle such that upon proximity of the vehicle to a predetermined location, one of the colored lanes of light will be seen by the operator. Where multiples lanes of light are projected, the initial lane color may be traversed until a final lane color is encountered indicating that a desired or predetermined location has been reached. A directional indicia media having one type of indicia to indicate a lateral approach position of a vehicle and a second type of indicia to indicate the distance of the vehicle from a predetermined location may be utilized with one or more lanes of light.

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