Pedersen v. Dundon
Court of Appeals for the Ninth Circuit
Appeal from the District Court of the United States for the Second Division of the Northern District of California; Wm. C. Van Fleet, Judge. Suit in equity by Patrick F. Dundon against L,. A. Pedersen. Decree for complainant, and defendant appeals. The appellee is the patentee of letters patent No. 653,503, issued July 10, 1900, for “door for digesters.”
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Appeal from the District Court of the United States for the Second Division of the Northern District of California; Wm. C. Van Fleet, Judge. Suit in equity by Patrick F. Dundon against L,. A. Pedersen. Decree for complainant, and defendant appeals. The appellee is the patentee of letters patent No. 653,503, issued July 10, 1900, for “door for digesters.” In the specifications the invention is described as new and useful improvements in hermetically sealing doors, and relates to doors for hermetically sealing retorts, digesters, or other vessels that sustain internal pressure” and to certain…
1Opinion of the CourtGilbert, Circuit Judge
(after stating the facts as above). The appellant’s combination differs from that which is described in the patent, in that the crossbars by- means of which he applies external pressure to the door to hold it in place and make a tight joint do not combine with that function the function of hinges, but separate hinges are used, and the detachable crossbars were inserted in lugs on either side of the door frames.
The single element in the appellee’s combination which is not found in prior combinations of the same kind is the compensating link at the top of the door, which resists the tendency of…
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