Perfect Circle Corp. v. Hastings Manufacturing Co.

162 F. Supp. 777, 118 U.S.P.Q. (BNA) 16, 1958 U.S. Dist. LEXIS 4155
District Court, W.D. Michigan·Decided June 17, 1958·No. Civ. A. 2011·Published·Cited by 4 cases

Opinion

STARR, Chief Judge.

In its complaint in this case plaintiff alleged that it manufactured and sold piston rings known as Chrome Oil Stopper rings, which defendant claimed infringed its patent No. 2,565,042 issued August 21, 1951, on application filed May 17, 1948. Plaintiff denied that its rings infringed defendant’s patent and alleged that all claims of the patent were invalid. It asked for a declaratory judgment (28 U.S.C.A. §§ 2201, 2202) determining defendant’s patent to be invalid and not infringed and also for costs of suit and attorney fees. Defendant answered, alleging that plaintiff’s Chrome Oil Stopper rings infringed its patent and denied plaintiff’s right to the relief sought. In its counterclaim defendant alleged its ownership of said patent as assignee of the inventor, Harold P. Phillips; real-leged its charge of infringement; and asked for an injunction against further infringement, for damages, costs of suit, and attorney fees.

In support of its claim of invalidity of patent because of lack of invention and prior-art anticipation, plaintiff cites the following patents and publications: Payne 1,600,961 issued September 21, 1926;1 Fink et al. 1,956,014 issued April 24, 1934; Teetor 2,236,721 issued April 1, 1941; Engelhardt 2,281,873 issued May 5, 1942; Phillips 2,313,395 issued March 9, 1943; Van der Horst 2,367,159 issued January 9, 1945; Phillips 2,404,-862 issued July 30, 1946; French Patent 840,101 published April 19, 1939; advertisement, Simplex Products Corporation, October, 1945, issue of Motor magazine; advertisement, Simplex Products Corporation, October, 1945, issue of Southern Automotive Journal; and advertisement, Simplex Products Corporation, October, 1945, issue of Commercial Car Journal. Plaintiff further alleged in support of its claim of invalidity that the piston ring described in defendant’s patent and all material parts thereof had, prior to invention and more than one year prior to the application for patent, been publicly known, used, sold, and on sale by plaintiff and its employees, distributors, and dealers at Hagerstown, Indiana, and elsewhere in the United States; by defendant, its employees, distributors, and dealers at Hastings, Michigan and elsewhere in the United States; and by Simplex Products Corporation 2 of Cleveland, Ohio, and its employees, distributors, and dealers.

The piston ring described in defendant’s patent in suit and the plaintiff’s accused piston ring are known as oil-con[779] trol rings and are for use on the pistons in the cylinders of internal-combustion engines. The specifications of the patent state that the invention relates to improvements in piston rings, and claims 1, 3, 5, and 7, which reasonably illustrate all claims, read as follows:

“1. A piston ring assembly comprising a pair of spaced relatively thin flat annular split cylinder wall engaging steel side elements and an annular split expansible spacer element intermediate said side elements, and an expander spring acting to force said side elements against a cylinder wall, said side elements having their cylinder wall engaging portions chrome plated, the chrome being plated on the steel, the cylinder wall engaging surface of the chrome plating being curved, the radius of the arc of curvature being not greater than one and one half times the axial thickness of a side member and not greater than .045 of an inch regardless of the axial thickness of the side member, to provide a relatively narrow hairline contact between said chrome cylinder wall engaging surface and a cylinder wall and a relatively high unit of pressure of the side members against the cylinder wall and to provide relatively large oil pockets close to and on opposite sides of said narrow line of contact, said narrow line of contact and high unit of pressure facilitating on the initial operation of newly installed side members relatively close seating of the side members in the cylinder for effective oil control and effective sealing for increased piston pressure, and said relatively large oil pockets close to and on opposite sides of said narrow line facilitating increased lubrication at said narrow line of contact.”
“3. A piston ring assembly comprising a pair of spaced expansible flat annular split cylinder wall engaging side elements, and an annular split expansible spacer element disposed between said side elements, said side elements having their cylinder wall engaging portions chrome plated, the cylinder wall engaging surface of the chrome plating being curved, the radius of the arc of curvature being approximately between one-half and two thirds the axial thickness of a side member but not greater than .045 of an inch regardless of the axial thickness of the side member to provide a relatively narrow hair-line contact between said chrome cylinder wall engaging surface and a cylinder wall and a relatively high unit of pressure of the side members against the cylinder wall and relatively large oil pockets close to and on opposite sides of said narrow line of contact.”
“5. A relatively thin annular split expansible steel piston ring member having a curved chrome plated cylinder wall engaging surface, the chrome surface being plated on the steel, the radius of the arc of curvature of said surface being not greater than .045 of an inch regardless of the axial thickness of the member.”
“7. An annular split expansible piston ring member having a chrome plated cylinder wall engaging surface, said chrome plated cylinder wall engaging surface being curved to provide a relatively narrow hairline contact with a cylinder wall, said hair-line contact facilitating relative high unit pressure of the ring member against the cylinder wall and facilitating on initial operation of a newly installed ring member close seating of the same against the cylinder wall for effective oil control and seal pressure without drag or resulting high temperatures from friction.”

The piston rings in the cylinder of an internal-combustion engine are generally referred to as compression rings and oil rings. The compression ring, located on the upper end of the piston has the dual function of sealing the gases in the com[780] bustion chamber above the piston and controlling the oil in the cylinder. The next lower ring on the piston is generally referred to as an intermediate ring and serves both compression and oil-control purposes. The lowest ring is referred to an oil ring, and its purpose in connection with lubrication is to keep the oil in the crankcase from passing into the combustion chamber in the cylinder. It appears that some types of piston rings may be used as either compression or oil rings.

Free access — add to your briefcase to read the full text and ask questions with AI

Perfect Circle Corp. v. Hastings Manufacturing Co., 162 F. Supp. 777, 118 U.S.P.Q. (BNA) 16, 1958 U.S. Dist. LEXIS 4155 (W.D. Mich. 1958).

162 F. Supp. 777 (Perfect Circle Corp. v. Hastings Manufacturing Co.) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

Related

United States v. Santoro
647 F. Supp. 153 (E.D. New York, 1986)
Halstead v. Globe Hoist Co.
231 F. Supp. 1012 (S.D. California, 1964)
Barrott v. Drake Casket Co.
187 F. Supp. 284 (W.D. Michigan, 1960)