Hoeltke v. CM Kemp Mfg. Co.
Decision Date | 10 January 1936 |
Docket Number | No. 3815.,3815. |
Citation | 80 F.2d 912 |
Parties | HOELTKE v. C. M. KEMP MFG. CO. |
Court | U.S. Court of Appeals — Fourth Circuit |
Frank Keiper, of Rochester, N. Y. (Robert R. Carman, of Baltimore, Md., on the brief), for appellant.
Arlon V. Cushman, of Washington, D. C., and Lewis W. Lake, of Baltimore, Md. (Cushman, Darby & Cushman, William M. Cushman, and C. Willard Hayes, all of Washington, D. C., on the brief), for appellee.
Before PARKER and SOPER, Circuit Judges, and HAYES, District Judge.
This was a suit instituted to enjoin infringement of patent No. 1,822,402 issued September 8, 1931, to William F. Hoeltke on an application filed April 16, 1929. Hoeltke, the patentee, was complainant. The defendant was the C. M. Kemp Manufacturing Company, of Baltimore, a corporation engaged among other things in the manufacture and sale of apparatus for mixing and distributing a mixture of air and gas for industrial purposes in factories. The complaint, in addition to asking damages for infringement of the patent and injunction against further infringement, prayed for an accounting by defendant of profits made on the sale of infringing apparatus prior to the grant of the patent, on the ground that defendant had obtained from complainant a disclosure as to the nature of the patent, and, in fraudulent breach of the confidence so reposed, had made and sold apparatus embodying complainant's invention and attempted to obtain a patent thereon. Defendant denied both the infringement and the fraud alleged, and pleaded in addition that the patent was anticipated in the prior art and was lacking in invention. The court below decided the issues so presented in favor of the defendant, and complainant has appealed.
The patent in suit covers an automatic fire check for use in connection with gas burners in such way as to prevent the ignition of the gas and air mixture in the pipe lines with consequent explosion and wrecking of the apparatus. Prior to complainant's invention, the only fire check in use consisted of a nipple, which contained a perforated refractory metal disk, and behind this a screen of copper wire gauze, and which was inserted between the end of the gas pipe line and the burner. This disk and screen permitted the mixture of gas and air to flow to the burner, but in case of backfire, arrested the flame and prevented its igniting the mixture of gas and air in the pipes for a considerable period. The nipple was painted with linseed oil and lamp black; and when a backfire occurred, the heating of the nipple caused these to give off an odor which warned the person in charge of the apparatus of the approaching danger, so that he could shut off the gas by means of a hand valve located behind the nipple. This fire check with the manually operated valve was satisfactory and sufficient if workmen were near when the backfire occurred; but, if no one was near enough to be warned by the odor, the flame burned through the disk and screen and ignited the gas and air mixture in the pipes, resulting in costly and dangerous explosions. The only other device in use for preventing backfires was the large "backfire preventer" of the Kemp patent, which we shall describe later. It was located near the mixing machinery, and, while efficient in preventing the wrecking of the machinery by backfires, it did not prevent costly explosions in the pipe lines in cases where the backfire was allowed to burn through the fire check.
Complainant was a mechanic or millwright employed by the American Can Company in its plant in Brooklyn, N. Y., in which apparatus manufactured by defendant had been installed. An explosion resulting from a backfire occurred in that plant on April 24, 1928, which caused considerable damage and resulted in the shutting down of the plant for the day. Complainant made inquiry of an employee of defendant (through whom defendant later made application for patent covering complainant's invention) as to why defendant did not provide some device to prevent such occurrences, and was told by this employee that it was not possible to provide such device, and that if this had been possible, defendant would have provided it. Complainant thereupon went to work to evolve such a device and after a number of experiments invented an automatic valve to be used in connection with the fire check described. It consisted of a spring valve held open by a lever, which, in turn, was held in tension by a pin placed in front of the refractory disk of the old fire check. This pin was made in two parts and was fastened together by solder, or other fusible metal, so that a backfire would melt the fusible metal and cause the pin to part. This would release the lever, and the spring would thereupon close the valve. The figures and the pertinent part of the specification contained in the patent issued to complainant are as follows:
The claims of the patent relied on in this suit are claims 1, 6, 8, 14 and 16. Claims 1 and 14 which may be taken as typical, are as follows:
After complainant had perfected his device, he wrote defendant under date of December 4, 1928, calling attention to the explosion which had occurred at the Brooklyn plant of the American Can Company, stating that he had perfected a device that would overcome that trouble which he had tried out, but had not shown to any one, and asking whether he could interest defendant in this safety device. Defendant replied under date of December 10th that it was interested in complainant's invention and would send a...
To continue reading
Request your trial-
Plastic & Metal Fabricators, Inc. v. Roy
...of Internal Revenue, 203 F.2d 1 (6th Cir.); Reynolds v. Whitin Machine Works, 167 F.2d 78, 86 (4th Cir.); Hoeltke v. Kemp Mfg. Co., 80 F.2d 912, 922-923 (4th Cir.). It is clear that the plaintiff's cause of action is for a wrongful breach of a confidential relationship, a matter independent......
-
Sarkes Tarzian, Inc. v. Audio Devices, Inc.
...Corp. v. Petroleum Iron Works Co., supra Note 49, 73 F. 2d at page 536; Id., 6 Cir., 1935, 74 F.2d 934, 935; Hoeltke v. C. M. Kemp Mfg. Co., 4 Cir., 1936, 80 F.2d 912, 922-923; Reynolds v. Whitin Mach. Works, 4 Cir., 1948, 167 F.2d 78, 86; Sandlin v. Johnson, supra Note 27, 141 F.2d at page......
-
Claypool v. HOUSTON OIL FIELD MATERIAL COMPANY
...F.2d 547; 4th Circuit: Baker-Cammack Hosiery Mills v. Davis Co., 1950, 181 F.2d 550; Otto v. Koppers, 1957, 246 F.2d 789; Hoeltke v. C. M. Kemp Mfg. Co., 80 F.2d 912, certiorari denied 298 U.S. 673, 56 S.Ct. 938, 80 L. Ed. 1395; Florence-Mayo Nuway Co. v. Hardy, 1948, 168 F.2d 778; Chesapea......
-
Seismograph Service Corp. v. Offshore Raydist
...Lines, 2 Cir., 158 F.2d 631, 170 A.L.R. 440; Chesapeake & Ohio Ry. Co. v. Kaltenbach, 4 Cir., 95 F.2d 801; Hoeltke v. C. M. Kemp Mfg. Co., 4 Cir., 80 F.2d 912; Allen-Qualley Co. v. Shellmar Products Co., supra; Booth v. Stutz Motor Car Co., 7 Cir., 24 F.2d 415; Id., 7 Cir., 56 F.2d 962. The......