Geometrical instruments – Straight-line light ray type – Alignment device
Reexamination Certificate
1999-04-15
2001-06-19
Gutierrez, Diego (Department: 2859)
Geometrical instruments
Straight-line light ray type
Alignment device
C033S578000
Reexamination Certificate
active
06247238
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to centerings jigs and more particularly pertains to a new laser marking device for marking a reference point with laser light so that accurate measurements can be made to that point.
2. Description of the Prior Art
The use of centering jigs is known in the prior art. More specifically, centering jigs heretofore devised and utilized are known to consist basically of familiar, expected and obvious structural configurations, notwithstanding the myriad of designs encompassed by the crowded prior art which have been developed for the fulfillment of countless objectives and requirements.
Known prior art includes U.S. Pat. Nos. 4,900,151; 5,123,742; 5,428,446; 5,623,334; 3,661,463; and U.S. Pat. No. Des. 305,030.
While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not disclose a new laser marking device. The inventive device includes a support bar that has first and second ends and a longitudinal axis extending between the first and second ends. The first and second ends are adapted to slidably rest on the horizontal portions of an adjacent pair of T-bars of a suspended ceiling. An illuminating device emits a beam of light to illuminate a reference point. The illuminating device is slidably mounted to the support bar.
In these respects, the laser marking device according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in so doing provides an apparatus primarily developed for the purpose of marking a reference point with laser light so that accurate measurements can be made to that point.
SUMMARY OF THE INVENTION
In view of the foregoing disadvantages inherent in the known types of centering jigs now present in the prior art, the present invention provides a new laser marking device construction wherein the same can be utilized for marking a reference point with laser light so that accurate measurements can be made to that point.
The general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new laser marking device apparatus and method which has many of the advantages of the centering jigs mentioned heretofore and many novel features that result in a new laser marking device which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art centering jigs, either alone or in any combination thereof.
To attain this, the present invention generally comprises a support bar that has first and second ends and a longitudinal axis extending between the first and second ends. The first and second ends are adapted to slidably rest on the horizontal portions of an adjacent pair of T-bars of a suspended ceiling. An illuminating device emits a beam of light to illuminate a reference point. The illuminating device is slidably mounted to the support bar.
There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are additional features of the invention that will be described hereinafter and which will form the subject matter of the claims appended hereto.
In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.
Further, the purpose of the foregoing abstract is to enable the U.S. Patent and Trademark Office and the public generally, and especially the scientists, engineers and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application. The abstract is neither intended to define the invention of the application, which is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.
It is therefore an object of the present invention to provide a new laser marking device apparatus and method which has many of the advantages of the centering jigs mentioned heretofore and many novel features that result in a new laser marking device which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art centering jigs, either alone or in any combination thereof.
It is another object of the present invention to provide a new laser marking device which may be easily and efficiently manufactured and marketed.
It is a further object of the present invention to provide a new laser marking device which is of a durable and reliable construction.
An even further object of the present invention is to provide a new laser marking device which is susceptible of a low cost of manufacture with regard to both materials and labor, and which accordingly is then susceptible of low prices of sale to the consuming public, thereby making such laser marking device economically available to the buying public.
Still yet another object of the present invention is to provide a new laser marking device which provides in the apparatuses and methods of the prior art some of the advantages thereof, while simultaneously overcoming some of the disadvantages normally associated therewith.
Still another object of the present invention is to provide a new laser marking device for marking a reference point with laser light so that accurate measurements can be made to that point.
Yet another object of the present invention is to provide a new laser marking device which includes a support bar that has first and second ends and a longitudinal axis extending between the first and second ends. The first and second ends are adapted to slidably rest on the horizontal portions of an adjacent pair of T-bars of a suspended ceiling. An illuminating device emits a beam of light to illuminate a reference point. The illuminating device is slidably mounted to the support bar.
Still yet another object of the present invention is to provide a new laser marking device that is particularly useful when installing overhead fire sprinklers. The laser beam marks the drop spot where a water pipe will bend downwardly to a sprinkler. The plumber can take measurements between an existing pipe and the laser dot and cut a pipe precisely to fit.
Even still another object of the present invention is to provide a new laser marking device that requires no special tools or equipment to mount, but rather rests on the T-bars of a suspended ceiling.
These together with other objects of the invention, along with the various features of novelty which characterize the invention, are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and the specific objects attained by its uses, reference should be made to the accompanying drawings and descriptive matter in which there are illustrated preferred embodiments of the invention.
REFERENCES:
patent: 685455 (1901-10-01), Kinkead
patent: 1003043 (1911-09-01), Goughnour
patent: 3015889
Harvey Greg
Harvey Richard
Harvey Robert
Doan Quyen
Gutierrez Diego
LandOfFree
Laser marking device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Laser marking device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser marking device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2508710