Geo. J. Meyer Manufacturing Co., a Wisconsin Corporation v. San Marino Electronic Corporation, a California Corporation

422 F.2d 1285, 165 U.S.P.Q. (BNA) 23, 1970 U.S. App. LEXIS 10529
Court of Appeals for the Ninth Circuit·Decided February 27, 1970·No. 22592_1·Published·Cited by 14 cases

Opinion

RUSSELL E. SMITH, District Judge.

Plaintiff, appellee and cross-appellant, San Marino Electronic Corporation (San Marino) manufactures empty bottle inspection machines. Defendant, cross-complainant, appellant, cross-appellee, Geo. J. Meyer Manufacturing Co. (Meyer) manufactures a bottle inspection machine designated the Mark IV which is designed in part according to the teachings of U.S. Patent No. 3,133,640 (No. ’640). No. ’640 is the patent in suit.

*1286 To the extent important here the pleadings created issues as to the validity, infringement and misuse of Patent No. ’640. The district court determined that Meyer had not been guilty of misuse; that No. '640 was invalid but if valid not infringed. The appeal and cross-appeal present those issues to this Court.

At the time of the issuance of Patent No. ’640 there was an unfilled need for a device which would rapidly and efficiently inspect empty bottles and detect foreign particles in them. Meyer’s Mark IV based in part on Patent No. ’640 filled this need and was a commercial success.

Validity

The patent in suit envisages a device which may be described: At the bottom is a light source, over which is a glass light diffuser. Over that is the bottle to be inspected and over the bottle is a lens which focuses the diffused light passing through the bottle to a revolving reticle. The light as it is affected by the reticle strikes a photo-electric cell. The centers of the light source, the opal glass diffuser, the reticle and the photoelectric cell all have a common vertical axis.

The reticle is a diác divided into alternating opaque and translucent pie-shaped segments of equal area. The patent illustrates a reticle which has seven opaque and seven translucent segments and which revolves 167 times per second. It appears in the patent drawings:

As the bottle passes over the light source, an examination occurs. This examination continues during the time that the center of the bottle is being conveyed from a position approximately one-sixteenth of an inch in front of the center *1287 of the light source to one-sixteenth of an inch beyond the center of the light source. The reticle makes at least one complete revolution during this period of time.

If the bottle is clean and clear then, since the quantity of light does not change as the reticle turns a maximum and relatively constant amount of light passes through the reticle to the photocell and produces a relatively high direct current. Under these conditions the direct current circuit operates to prevent the reject mechanism from acting. If, however, the bottle itself is sufficiently opaque, or if a relatively large foreign object restricts the passage of light, then the direct current produced by the photocell is reduced and at a predetermined level of reduction the direct current circuit causes the bottle to be rejected.

If there is a foreign object in the bottle of a size too small to reduce the direct current output of the photocell to the predetermined level of reduction the bottle will be rejected by the alternating current circuit. As the reticle rotates any foreign particle in the bottle will be alternately covered and uncovered. When the foreign object is covered by an opaque section of the reticle, then a maximum amount of light passes through the unobstructed translucent segments. This amount of light is diminished when the foreign object restricts the passage of light through one of the translucent segments. As a result of the operation of the reticle, light in varying intensities strikes the photocell which in turn emits energy in the form of an alternating current signal the frequency of which is determined by the number of spokes in the reticle times the revolutions per second. The frequency of the alternating current signal generated by a small particle in the bottle is different from the frequency generated by the edge of the bottle and variations in the general background of the bottle such as those caused by the edge, lettering or differences in the thickness or coloring of the glass. The circuits are designed to discriminate among alternating currents of different frequencies and the circuit is tuned to select, for rejection purposes, the frequency generated by the foreign object in the bottle. As a result of this frequency discrimination the reject mechanism operates in the presence of a foreign object of relatively small size, but does not operate to reject bottles because of the effects produced by the general background. The use of the alternating current signal to discriminate among these several effects was a substantial improvement in the prior art.

It is not claimed that there was anything new in the electrical circuits employed, but it is claimed that the use of a centered optical system in which light is passed through a bottle and reticle having equal opaque and translucent segments and onto a photo electric cell which in turn emits an alternating current signal which is then electronically processed to distinguish between foreign particles and other discontinuities in the bottle being inspected did constitute an invention. The evidence shows, and the district court found, that no such technique had been employed in the bottle inspection field. In the star tracking and missile tracking field • however multislit scanners similar to that used by Meyer had been used to convert radiations from a star or missile into an alternating current and to distinguish by electrical circuity between the signal given by the star or the missile and signals produced by the general background. The heart of the district court’s decision is contained in the following findings and conclusions.

Conclusion of Law IS

“If the missile and star tracking field cannot be properly considered with the bottle inspection field as a single art of detecting objects in a field of view by electro-optical techniques, the system disclosed and claimed in the ’640 patent constitutes an invention over the prior art relating to bottle inspection, and the patent is valid.”

*1288 Finding of Fact 9 and Conclusion of Law 5

“The nature of the art we are here concerned with is the detection of foreign objects in a field of view by electro-optical techniques, rather than being limited to the bottle inspection field.”

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Geo. J. Meyer Manufacturing Co., a Wisconsin Corporation v. San Marino Electronic Corporation, a California Corporation, 422 F.2d 1285, 165 U.S.P.Q. (BNA) 23, 1970 U.S. App. LEXIS 10529 (9th Cir. 1970).

422 F.2d 1285 (Geo. J. Meyer Manufacturing Co., a Wisconsin Corporation v. San Marino Electronic Corporation, a California Corporation) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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