Measuring and testing – Surface and cutting edge testing – Roughness
Patent
1995-12-05
1998-03-03
Noland, Thomas P.
Measuring and testing
Surface and cutting edge testing
Roughness
33546, 33552, G01B 528, G01B 520
Patent
active
057237743
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to mechanisms for scanning tri-dimensional bodies, and more particularly, to those mechanisms that include the use of microcomputers to store the characteristics of the reference bodies.
BACKGROUND ART
OTHER RELATED APPLICATIONS
The need to secure entry to controlled areas, to have access to information or in any way validating the privileges of a user have been the object of the design of numerous ingenious devices in the past. The conventional key is one of them. However, none of these devices have utilized the characteristics of a tri-dimensional body regardless of what material is made out of. This is particularly important because it makes practically all such bodies compatible with this system, including unique parts of the human body such as fingers and toes. None of the devices and methods known to this date have this flexibility.
SUMMARY OF THE INVENTION
It is one of the main objects of the present invention to provide a mechanism that is capable of recognizing the tri-dimensional contour of a body, storing these characteristics in code and identifying the same body profile subsequently to validating it.
It is another object of the present invention to provide such a mechanism that can validate a body, under test and that is smart enough to allow for gradual changes of the body and for differences in the relative positioning of the body from validation to validation.
It is still another object of this invention to provide such a mechanism that will compute and store information that is a function of the dimensions and profile of a body being tested or validated.
It is yet another object of the present invention to provide such a device that is inexpensive to manufacture and maintain while retaining its effectiveness.
Further objects of the invention will be brought out in the following part of the specification, wherein detailed description is for the purpose of fully disclosing the invention without placing limitations thereon.
BRIEF DESCRIPTION OF THE DRAWINGS
With the above and other related objects in view, the invention consists in the details of construction and combination of parts as will be more fully understood from the following description, when read in conjunction with the accompanying drawings in which:
FIG. 1 is a partial cross-sectional view of the preferred embodiments of the present invention showing a user's finger being scanned.
FIG. 2 shows a front view of one contour follower member travelling downwardly and being prevented from any further movement by reference body R.
FIG. 2A shows the same contour follower described in FIG. 2 when it reaches the 90.degree. position pressing from right to left.
FIG. 2B shows the contour follower member represented in the previous two figures pressing now from the bottom up as the rotor reaches the 180.degree. position.
FIG. 2C shows the contour follower member in the 270.degree. position.
FIG. 3 illustrates one of the preferred embodiments in accordance with the present invention for the linkage mechanism between the phase disk and the contour follower member.
FIG. 3A is an alternate linkage mechanism to the one shown in FIG. 3.
FIG. 3B is a second alternate linkage mechanism.
FIG. 3C is a top view of the contour follower shown in figure 3B.
FIG. 4 represents a partial cross-sectional view of the actuating end of the plunger assembly.
FIG. 5 is an end view of the actuating end of the plunger mechanism.
FIG. 6 is an isometric view of some of the components of the present invention to illustrate their functional interrelationship and wherein the size of the peripheral teeth of the phase disk 82.sub.1 at the front has been exaggerated.
FIG. 6A shows a more realistic representation of the toothed phase disk (more teeth) thereby increasing the resolution of the device.
FIG. 6B represents an alternate embodiment where the toothed periphery of the phase represented in the previous figure is replaced with markings that are detectable through a phototransistor T with the application of suita
REFERENCES:
patent: 3553370 (1971-01-01), Rosenheck
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patent: 4133204 (1979-01-01), Mittleman
patent: 5179425 (1993-01-01), Reinsch et al.
patent: 5245864 (1993-09-01), Sanchez
patent: 5337870 (1994-08-01), Hays
Patent Abstracts of Japan Grp M 774 vol. 12, No. 475 Abs Pub Date Dec. 13, 1988 (63-196331) "Phase Alignin, Device for Multi-Disc Clutch Plate".
Patent Abstracts of Japan Grp M 1256, vol. 16, No. 232 Abs Pub Date May 28, 1992 (4-47123) "Variable Valve Timing System".
Micro Identification Systems, Inc.
Noland Thomas P.
Sanchelima J.
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