Legal Opinion
Automatic Switch Co. v. J. L. Schureman Co.
U.S. Circuit Court for the Northern District of Illnois
Decided December 10, 1910No. 28,566Published
In Equity. Suit by the Automatic Switch Company and the Otis Elevator Company against the J. E. Schureman Company. On final hearing.
1Opinion of the Court
KOHLSAAT, Circuit Judge.
Complainants file their hill to restrain infringement of claims 4, 5, 6, 7, and 8 of patent No. 499,769, granted to G. H. Whittingham June 20, 1893, for a regulator for electric motors. These claims read as follows, viz.:
“4. The combination of a solenoid of low resistance and a conductor of high resistance connected thereto, a reciprocating iron core within the solenoid, means for holding the core at any predetermined point within the solenoid when it reaches it, until the current is shut off and which will automatically release the core when this occurs, a circuit…
2Cases cited3 opinions
- Morgan Engineering Co. v. Alliance Mach. Co.Court of Appeals for the Sixth Circuit · 1909
- Automatic Switch Co. v. Cutter-Hammer Mfg. Co.U.S. Circuit Court for the District of Southern New York · 1905
- Benbow-Brammer Mfg. Co. v. Richmond Cedar WorksCourt of Appeals for the Seventh Circuit · 1909