Stewart-Warner Corp. v. Rogers

101 F.2d 762, 40 U.S.P.Q. (BNA) 391, 1939 U.S. App. LEXIS 4452
CourtCourt of Appeals for the Third Circuit
DecidedFebruary 9, 1939
DocketNos. 6350, 6351
StatusPublished
Cited by3 cases

This text of 101 F.2d 762 (Stewart-Warner Corp. v. Rogers) is published on Counsel Stack Legal Research, covering Court of Appeals for the Third Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Stewart-Warner Corp. v. Rogers, 101 F.2d 762, 40 U.S.P.Q. (BNA) 391, 1939 U.S. App. LEXIS 4452 (3d Cir. 1939).

Opinion

BIGGS, Circuit Judge.

The appeals at bar are limited to a consideration of claims 2, 3 and 5 of United States Patent No. 1,475,980, issued on December 4, 1923 to Oscar Zerk for a lubricating apparatus. The appeals at bar are further limited by the charge made by Stewart-Warner Corporation, the appellant in each cause, that the appellees have been guilty of contributory infringement of Zerk’s patent by manufacturing and selling nipples or fittings of the kind described in the Zerk patent with the knowledge and intention that such nipples would be used with the appellant’s compressors having push-type nozzles, thus creating the combination described in the claims in suit.

The learned District Judge found these claims to be invalid under the ruling of the Supreme Court in Rogers v. Alemite Corporation, made by it concurrently with its decision in Bassick Manufacturing Co. v. R. M. Hollingshead Co., 298 U.S. 415, 56 S.Ct. 787, 80 L.Ed. 1251. He also found that under the cited ruling the claims of the patent here in suit were invalid because the patentee was claiming no more than an old combination whose construction and operation were not changed “merely by substituting an improved element of this combination for an old element.” [15 F.Supp. 410, 412.] He also reached the conclusion that this finding rendered it unnecessary to pass upon any of the other issues of fact or law presented and thereupon dismissed the bill of complaint.

Before answering the questions presented by the appeals we deem it desirable to state the nature of the Zerk patent sub judice. The patent relates to improvements in a lubricating system for the lubrication of the moving parts of machines such as automobiles. In a brief recital of the prior art Zerk points out that it has become the universal practice to provide such parts or elements with inlet nipples to which a grease gun may be secured detachably and to furnish the gun with a flexible tube or hose having a coupling at its end which may be adjusted manually and locked against the inlet nipple to provide a tight joint through which the grease may be forced down the tube by the pressure of the gun. Zerk makes plain that this operation as conducted under the prior art required the operator to use both hands and caused a waste of lubricant and energy since a greasing operator generally is compelled to work from an awkward posi[763]*763tion. In Ills specifications Zerk then states that the main object of his invention is to overcome “ * * * these objections by so constructing a pistol and a nipple, that the pistol can be held in one hand and placed in direct oscillatory, leak proof contact with the nipple, and while so held will inject lubricant into the nipple, when direct pressure is applied thereto.”

•Claim 2 of the patent is typical. It reads as follows: “In a lubricating apparatus, the combination wiib a lubricant receptacle element of a lubricant reservoir for supplying lubricant thereto, means to put the lubricant in the reservoir under pressure, a lubricant feeding nozzle element, said reservoir communicating lubricant under pressure thereto, said receptacle element and said nozzle element having cooperative substantially non-comprcssible contact faces and openings therethrough, the nozzle contact face having a concavely spherical surface, the other contact face having a dirt cutting circumferential edge portion adapted to be embraced within the spherical surface of the nozzle face and providing the sole contact therewith when the nozzle is pressed against the receptacle element from any one of a plurality of angularly different directions, to make a sealed, substantially non-yielding, lubricant conducting connection between the face openings.”

It will be observed by an examination of the specifications of the patent and the language of the claims in issue that Zerk lays emphasis upon two features of the combination claimed by him, viz., tile structure of the nozzle and that of the nipple. Zerk provides that the nozzle of his apparatus possesses a spherical non-corapressible contact face and that the nipple has a circular dirt cutting edge. Zerk’s patent contemplates that these two surfaces shall meet and kiss, thus creating a tight connection. In other words the nozzle and the nipple form a complete contact which may be maintained simply by pressing the nozzle down within the nipple. Since contact is made by pressure between these members, it is obvious that because of the form of both, an effective working cooperation may be maintained between them at the angularly different directions described by the patent. This is what the patentee means when he refers to the “ * * * coaction of the novel dirt cutting edge of the nipple with the novel concavely spherical- concavity with its substantially noncompressible contact face * v * ’. As appears, Zerk claims this method of contact between the nozzle and the nipple in conjunction with other elements which are old in the art of lubrication, viz., a lubricant receptacle or reservoir for supplying lubricant, a means to put the lubricant in the reservoir under pressure, and a feeding nozzle connecting with the reservoir for sending the lubricant down into the nipple or fitting under heavy pressure.

The combination of grease gun, coupler or grease cup or nipple is old in the prior art. If we assume that Zerk made an invention, we see that it must consist of the nozzle and nipple formed to function as we have indicated heretofore. But Zerk attempts to extend the monopoly of his patent to the combination containing old elements. This he may not do.

In Rogers v. Alemite Corporation, supra, the Supreme Court passed upon certain claims of Gullborg, Patent No. 1,307,734. Gullborg claimed a combination of a compression chamber or pump, a hose,, a hose coupler, and a grease cup or fitting connection to the hearing. The proof in the cited case established that the prior art embraced the use in combination of a grease gun, a hose, a hose coupler' and a spring-closed fitting, the coupling being of the pin and slot type. It was apparent that if Gullborg had invented anything his invention consisted of an improved pin fitting and an improved coupler. Rogers sold pin fittings of a type with which a grease gun of Gullborg’s description could be used and also sold grease guns having a bayonet slotted coupler capable of use in conjunction with the pin fittings of another Gullborg Patent, No. 1,307,733 (covering a fitting in which, instead of pins or lugs set on either side, a pin runs directly through the tube and extends out on either side serving as a spring to hold in place the metal ball which closes the opening of the fitting) or with other pin fittings not covered by that patent. Mr. Justice Roberts, delivering the opinion of the Court, stated at pages 424 and 423 of the opinion, 56 S.Ct. page 791:

“It is plain that (lullborg invented improvements of two of the mechanical elements of an old combination consisting of grease pump, hose, hose-coupler, and a grease cup or pin fitting. First, he contrived an improved pin fitting. This he patented as such. No. 1,307,733. Second[764]*764ly, he invented an improved form of coupler to be attached to the end of the hose leading from the pump to the fitting. Instead of patenting this, as he' did the pin fitting, he claimed a combination of pump, hose-coupler, and pin fitting, and embodied in the combination his improved form of coupler. No. 1,307,734, the patent in suit; claims 1-6, 8 and 10.

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Bluebook (online)
101 F.2d 762, 40 U.S.P.Q. (BNA) 391, 1939 U.S. App. LEXIS 4452, Counsel Stack Legal Research, https://law.counselstack.com/opinion/stewart-warner-corp-v-rogers-ca3-1939.