Geometrical instruments – Straightedge type – Plural straightedges – relatively moveable
Reexamination Certificate
2000-02-04
2001-12-18
Gutierrez, Diego (Department: 2859)
Geometrical instruments
Straightedge type
Plural straightedges, relatively moveable
C033S498000, C033S465000, C033S424000, C403S093000, C403S095000
Reexamination Certificate
active
06330752
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to squaring tools and more particularly pertains to a new adjustable squaring tool for measuring and marking angles in one degree increments between 10 degrees and 90 degrees.
2. Description of the Prior Art
The use of squaring tools is known in the prior art. More specifically, squaring tools 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. No. 4,312,133; U.S. Pat. No. 4,697,351; U.S. Pat. No. 4,525,933; U.S. Pat. No. 4,685,366; U.S. Pat. No. 5,539,991; and U.S. Pat. No. Des. 262,195.
While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not disclose a new adjustable squaring tool. The inventive device includes a pivot arm pivotally coupled between first and second sections of a main member. The pivot arm having a graduated arcuate measurement arm extending from the pivot arm through a channel in the main member. The pivot arm having a cylinder coupled to an end of the pivot arm. The main member includes a drum passing through the cylinder. The cylinder has a plurality of radially spaced apertures corresponding to the gradations of the measurement arm. The drum includes at least one spring biased bearing positioned for engaging said apertures in the cylinder as the cylinder rotates around the drum. A locking assembly is provided for clamping the pivot arm between the first and second sections of the main member to lock the pivot arm relative to the main member.
In these respects, the adjustable squaring tool 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 measuring and marking angles in one degree increments between 10 degrees and 90 degrees.
SUMMARY OF THE INVENTION
In view of the foregoing disadvantages inherent in the known types of squaring tools now present in the prior art, the present invention provides a new adjustable squaring tool construction wherein the same can be utilized for measuring and marking angles in one degree increments between 10 degrees and 90 degrees.
The general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new adjustable squaring tool apparatus and method which has many of the advantages of the squaring tools mentioned heretofore and many novel features that result in a new adjustable squaring tool which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art squaring tools, either alone or in any combination thereof.
To attain this, the present invention generally comprises a pivot arm pivotally coupled between first and second sections of a main member. The pivot arm having a graduated arcuate measurement arm extending from the pivot arm through a channel in the main member. The pivot arm having a cylinder coupled to an end of the pivot arm. The main member includes a drum passing through the cylinder. The cylinder has a plurality of radially spaced apertures corresponding to the gradations of the measurement arm. The drum includes at least one spring biased bearing positioned for engaging said apertures in the cylinder as the cylinder rotates around the drum. A locking assembly is provided for clamping the pivot arm between the first and second sections of the main member to lock the pivot arm relative to the main member.
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 arc 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 adjustable squaring tool apparatus and method which has many of the advantages of the squaring tools mentioned heretofore and many novel features that result in a new adjustable squaring tool which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art squaring tools, either alone or in any combination thereof.
It is another object of the present invention to provide a new adjustable squaring tool which may be easily and efficiently manufactured and marketed.
It is a further object of the present invention to provide a new adjustable squaring tool which is of a durable and reliable construction.
An even further object of the present invention is to provide a new adjustable squaring tool 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 adjustable squaring tool economically available to the buying public.
Still yet another object of the present invention is to provide a new adjustable squaring tool 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 adjustable squaring tool for measuring and marking angles in one degree increments between 10 degrees and 90 degrees.
Yet another object of the present invention is to provide a new adjustable squaring tool which includes a pivot arm pivotally coupled between first and second sections of a main member. The pivot arm having a graduated arcuate measurement arm extending from the pivot arm through a channel in the main member. The pivot arm having a cylinder coupled to an end of the pivot arm. The main member includes a drum passing through the cylinder. The cylinder has a plurality of radially spaced apertures corresponding to the gradations of the measurement arm. The drum includes at least one spring biased bearing positioned for engaging said apertures in the cylinder as the cylinder rotates around the drum. A locking assembly is provided for clamping the pivot arm between the first and second sections of the main member to lock the pivot arm rel
Gutierrez Diego
Jagan Mirellys
LandOfFree
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