Sundh Electric Co. v. Interborough Rapid Transit Co.
Court of Appeals for the Second Circuit
Appeal from the Circuit Court of the United States for the Southern District of New York. Suit in equity by the Sundh Electric Company against the Interbor-ough Rapid Transit Company. Decree for complainant, and defendant appeals. This cause comes here upon appeal from a decree granting injunction and accounting in a suit in equity for infringement of a patent.
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Appeal from the Circuit Court of the United States for the Southern District of New York. Suit in equity by the Sundh Electric Company against the Interbor-ough Rapid Transit Company. Decree for complainant, and defendant appeals. This cause comes here upon appeal from a decree granting injunction and accounting in a suit in equity for infringement of a patent. The patent is No. 733,564 granted July 14, 1903, to August Sundh, complainant’s assignor, for an electric controller. The claims with which this appeal is concerned are: “1. An electro magnet, an armature therefor, a shaft, means for…
1Opinion of the CourtLacombe, Circuit Judge
(after stating the facts as above). An electric controller is a device for regulating the amount of current delivered to a machine which such current operates. When, by closing a circuit the current is turned on, it is desirable that its entire force should not become operative at once at the working point. Therefore in the circuit there are placed one or more resistance coils, which reduce such force until they are cut out by the closing or opening of other circuits, usually in succession. A familiar instance is the hand-operated controller on a trolley car where the driver moves a lever…
2Cases cited3 opinions
- Bates v. CoeSupreme Court of the United States · 1878
- Barnes Automatic Sprinkler Co. v. Walworth Manuf'g Co.Court of Appeals for the Seventh Circuit · 1894
- Diamond Drill & Machine Co. v. Kelly Bros.U.S. Circuit Court for the District of Eastern Pennsylvania · 1903
3Cited by19 opinions
- Lemley v. Dobson-Evans Co.Court of Appeals for the Sixth Circuit · 1917
- Willard v. Union Tool Co.Court of Appeals for the Ninth Circuit · 1918
- Camp Bros. & Co. v. Portable Wagon Dump & Elevator Co.Court of Appeals for the Seventh Circuit · 1917
- Davis-Bournonville Co. v. Alexander Milburn Co.Court of Appeals for the Second Circuit · 1924
- Farmers' Handy Wagon Co. v. Beaver Silo & Box Mfg. Co.Court of Appeals for the Seventh Circuit · 1916
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