Pangborn Corp. v. American Foundry Equipment Co.

159 F.2d 88, 70 U.S.P.Q. (BNA) 462, 1946 U.S. App. LEXIS 3902
Court of Appeals for the Third Circuit·Decided August 12, 1946·No. Nos. 8991, 9004, 9025·Published·Cited by 2 cases

Opinion

BIGGS, Circuit Judge.

The three appeals at bar are in reality but two. The first, that at our No. 8991 (Civil Action No. 193 in the court below), is that of Pangborn Corporation (Pang-born) from an order of the court below denying Pangborn or anyone claiming under it the right to prosecute any proceeding based on Rosenberger and Keefer Patent No. 2,352,588, against The American Foundry Equipment Company (American). The two other appeals, respectively at our Nos. 9004 and 9025, were taken by William F. Hall, Esquire, a member of the Bar of the District of Columbia, admitted pro hac vice to prosecute Pangborn’s suit against American in the court below in Civil Action No. 193 from an order adjudging him guilty of contempt Mr. Hall has appealed twice from the same order, once as if he had been adjudged guilty of a civil contempt, next as if he had been found guilty of a criminal contempt. It will be appropriate to dispose of all of the three appeals in a single opinion. The facts are complicated and must be stated in some detail.

We must concern ourselves first with a series of patent applications and interferences which grew out of them; second, with patents issued on certain of these applications; and, third, with certain suits growing out of the foregoing. The machine or device involved in all of the applications, patents and suits is one which projects a granular medium at high velocity against an object to remove surface material by abrasive or attritive action. In simpler words the device with which we are concerned is one by which an abrasive material such as shot or sand is hurled against a casting to be cleaned, a stone monument to be inscribed, or a piece of glass to be .engraved. American’s machine is called a “Wheelabrator” and Pangborn’s is called an “RA Rotoblast”.

The interferences with which we are concerned are as follows.

(1) (a) On July 9, 1935, an interference, No. 71,085, was instituted in the Patent Office between Peik application S. N. 685,025, subsequently owned by American, and Rosenberger and Keefer application S.N. 726,188, assigned to Pangborn. This interference reached the Court of Customs and Patent Appeals. See Peik v. Rosenberger, 113 F.2d 129. The Examiner of Interferences had awarded priority of the subject matter of the three counts in issue to Peik. The Board of Appeals reversed the Examiner. The Court of Customs and Patent Appeals affirmed the decision of the Board of Appeals. The question presented was whether Peik application S.N. 685,025, the disclosure of which was embodied in the drawing which Peik presented to his attorney, Sprinkle, under circumstances referred to hereinafter, disclosed a structure which would entitle Peik to preempt three of Rosenberger and Keefer’s claims from their application S.N. 726,188. The Court of Customs and Patent Appeals held that it was clear from the applications of the parties that Peik was not entitled to make the claims constituting the counts in issue.

(b) On November 30, 1937, another interference. No. 74,841, was instituted be[90] tween Peik application S.N. 685,025 (American), Rosenberger and Keefer application S.N. 726,188 (Pangborn), and Peterson application S.N. 59,455. Peterson was the shot-blast foreman at the Gary Tin Mill of the American Sheet and Tin Plate Company, who had aided Peik in the latter’s test of the machine of his patent No. 1,953,-566, referred to at length under (2) of this opinion.

(c) On December 22, 1937, another interference, No. 75,177, was instituted between Peik application S.N. 685,025 (American) and another Keefer application owned by Pangborn.

It will be observed that the Peik application S.N. 685,025 was involved in all these interferences. It will be noted also that a continuation in part of Rosenberger and Keefer S.N. 726,188, viz. S.N. 382,256, matured into Pangborn Patent No. 2,352,588.

(2) On February 4, 1936, American sued Pittsburgh Forgings Company (Forgings) and Pangborn in the District Court of the United States for the Western District of Pennsylvania alleging that Forgings and Pangborn had infringed Peik Patent No. 1,953,566 issued April 3, 1934 upon application S.N. 708,118 filed January 24, 1934. This suit is referred to by the parties to the case at bar as the “Pittsburgh suit”. We will so refer to it from time to time. Judge Schoonmaker held claims 8, 9, 12, 14-17 of the patent to be valid and infringed. See 38 USPQ 333-6. He stated that the claims infringed were “ * * * for a blasting machine of a centrifugal type, intended for the projecting of abradant particles such as sand shot or other grits. The invention is said to rest in the directional properties of the machine in that it is possible to project the blast over a desired limited zone.” See 67 F.Supp. 911. The opinion was handed down on January 10, 1938. Conceding that the conception of a centrifugal blasting wheel (one using centrifugal force by throwing the abradant particles from a revolving wheel as distinguished from one in which the particles were blown from the device by air pressure) was old, Judge Schoonmaker pointed out that an earlier wheel, conceived by Hol-lingsworth, was operated with a shroud around its periphery to assist in directing the abradant; that such a shroud wore out rapidly and had to be replaced repeatedly; and that the problem of directional control of the discharge blast was ■ solved by Peik’s wheel which received the abradant at the center and sent it out over the inner edges of throwing blades, the abradant being discharged from the periphery in a limited arc in any desired zone about the wheel.

The trial judge said, 67 F.Supp. 913, “The claims of the patent in suit are not limited to the particular type of spiral throwing blades preferred by Peik, so that the form of the throwing blades is not involved in this suit.” Despite the contents of that portion of the sentence just quoted, viz., the part following the comma, an examination of the record in the case shows clearly that the defendants did make the form of the throwing blades an issue in the suit, attempting to distinguish the blades of their accused device from those of the machine of Peik’s patent. Judge Schoon-maker ruled, therefore, as American contends in the case at bar, that Peik’s invention possessed the status of a pioneer invention and that his patent covered any centrifugal rotating wheel, the blades of which, sans shroud, would discharge the abradant from the periphery of the wheel through a limited arc in a desired zone about it. The statements to this effect by the learned trial judge were actually dicta except insofar as the accused machine and the prior art cited to him were concerned.

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Pangborn Corp. v. American Foundry Equipment Co., 159 F.2d 88, 70 U.S.P.Q. (BNA) 462, 1946 U.S. App. LEXIS 3902 (3d Cir. 1946).

159 F.2d 88 (Pangborn Corp. v. American Foundry Equipment Co.) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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