Ralph N. Brodie Co. v. Hydraulic Press Mfg. Co.

151 F.2d 91, 66 U.S.P.Q. (BNA) 396, 1945 U.S. App. LEXIS 4539
CourtCourt of Appeals for the Ninth Circuit
DecidedAugust 29, 1945
Docket10546
StatusPublished
Cited by22 cases

This text of 151 F.2d 91 (Ralph N. Brodie Co. v. Hydraulic Press Mfg. Co.) is published on Counsel Stack Legal Research, covering Court of Appeals for the Ninth Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Ralph N. Brodie Co. v. Hydraulic Press Mfg. Co., 151 F.2d 91, 66 U.S.P.Q. (BNA) 396, 1945 U.S. App. LEXIS 4539 (9th Cir. 1945).

Opinion

MATHEWS, Circuit Judge.

Appellee (The Hydraulic Press Manufacturing Company) brought a suit against appellants (The Ralph N. Brodie Company and The Pelton Water Wheel Company) 1 and others for infringement of three pattents (Nos. 2,067,265, 2,136,240 and 2,167,941) owned by appellee. Answering, appellants pleaded as defenses that the patents were invalid, and that, if valid, they were not infringed. The case was tried by the court without a jury. In the course of the trial, the suit was dismissed as to all de *92 fendants except appellants. The court held that claims 7, 9, 10, 11, 14 and 15 of patent No. 2,067,265 and claims 7, 8, 9 and 10 of patent No. 2,136,240 were valid and infringed by appellants and entered a judgment (51 F.Supp. 202) which enjoined such infringement, ordered an accounting of profits and damages and dismissed the suit as to patent No. 2,167,941. From that judgment this appeal is prosecuted.

Appellants say that the court erred (1) in holding that claims 7, 9, 10, 11, 14 and 15 of patent No. 2,067,265 and claims 7, 8, 9 and 10 of patent No. 2,136,240 were valid and (2) in holding that these claims were infringed by appellants.

I.

Patent No. 2,067,265 was applied for by Walter Ernst (appellee’s assignor) on July 19, 1934, and was issued on January 12, 1937. The specifications of this patent stated: “This invention relates to hydraulic presses and, in particular, to such presses arranged for drawing metal blanks into articles of various shapes, the press including means for clamping the metal blank while the drawing operation is taking place.” A hydraulic press embodying this alleged invention was described in the specification of this patent.

Patent No. 2,136,240 was applied for by-Ernst on April 16, 1936, and was issued on November 8, 1938. The specification of this patent stated: “This invention relates to hydraulic presses, and in particular, to drawing presses.” A hydraulic press embodying this alleged invention was described in the specification of this patent.

The press described in the specification of patent No. 2,067,265 and the press described in the specification of patent No. 2,136,240 each contain a pressing plunger; 2 a pressing cylinder 3 containing the head and upper portion of the pressing plunger;, a platen connected to and operated by the pressing plunger; an upper die 4 connected to the platen; a lower die 5 on which is placed a metal blank or work-piece; a pair of clamping plungers; 6 a pair of clamping cylinders, 7 each containing the head and upper portion of one of the clamping plungers; a clamping member connected to and operated by the clamping plungers; 8 means for supplying and conducting pressure fluid to each of the cylinders; 9 means for expelling, releasing and discharging pressure fluid from each of the cylinders; and means for restricting and controlling the flow of pressure fluid to and from each of the cylinders. 10

Claims 7, 9, 10, 11, 14 and 15 of patent No. 2,067,265 read as follows:

“7. In combination in a hydraulic press, a double-acting pressing plunger, a platen connected thereto, a clamping plunger, a clamping member operated thereby, said platen and said clamping member being adapted to engage one another, and means for restricting the discharge of pressure fluid from around one of said plungers, whereby to maintain said platen and said clamping member in engagement with one another during the motion thereof.”

“9. In combination in a hydraulic press, a double-acting pressing plunger, a clamping plunger, means providing inter-flow of pressure fluid between said clamping plunger and one side of said pressing plunger, and valve means adapted to control the flow of fluid with respect to the space around said clamping plunger.

“10. In combination in a hydraulic press, a double-acting pressing plunger, a clamping plunger, means providing inter-flow of pressure fluid between said clamping plunger and one side of said pressing plunger, and valve means adapted to control the flow of fluid with respect to the space around said clamping plunger, said valve means being operated by the motion of one of said plungers.

*93 “11. In combination in a hydraulic press, a double-acting pressing plunger, a clamping plunger, means providing inter-flow of pressure fluid between said clamping plunger and one side of said pressing plunger, and valve means adapted to control the flow of fluid with respect to the space around said clamping plunger, said valve means being operated by the motion of said clamping plunger.”

"14. In combination in a hydraulic press, a double-acting pressing plunger, a platen connected thereto, a clamping plunger, a clamping member operated thereby, means providing inter-flow of pressure fluid between said clamping plunger and one side of said pressing plunger, and escape valve means associated with said clamping plunger to release the pressure fluid from the space therearound when the clamping pressure thereof reaches a predetermined amount.

“15. In combination in a hydraulic press, a double-acting pressing plunger, a clamping plunger, a platen connected thereto, a clamping plunger, a clamping member operated thereby, means providing inter-flow of pressure fluid between said clamping plunger and one side of said pressing plunger, a tie member releasably interconnecting said pressing plunger and said clamping plunger, and escape valve means associated with said clamping plunger to release the pressure fluid from the space therearound when the clamping pressure thereof reaches a predetermined amount, said tie member being arranged to permit said platen to continue its motion after said clamping member has reached its clamping position.”

Claims 7, 8, 9 and 10 of patent No. 2,136,240 read as follows:

“7. In, combination, a pressing plunger, a platen operated thereby, a clamping cylinder in said platen, a clamping plunger in said cylinder, means for supplying fluid to said clamping cylinder, and means responsive to the pressure built up in the clamping cylinder by the motion of said clamping cylinder relatively to said clamping plunger for cutting off said fluid-supplying means from said clamping cylinder whereby the fluid is entrapped and pressure developed by the motion of said platen relatively to said clamping plunger and caused to operate said clamping plunger to clamp the work-piece.

“8.

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Bluebook (online)
151 F.2d 91, 66 U.S.P.Q. (BNA) 396, 1945 U.S. App. LEXIS 4539, Counsel Stack Legal Research, https://law.counselstack.com/opinion/ralph-n-brodie-co-v-hydraulic-press-mfg-co-ca9-1945.