Westinghouse Air Brake Co. v. Christensen Engineering Co.
District Court, S.D. New York
In Equity. Suit for infringement of letters patent No. 481,134 for a valve for automatic air brakes, issued to George Albert Boyden, August 16, 1892. On final hearing.
1Opinion of the Court
WHEEEER, District Judge.
This suit is brought upon patent No. 481,134, dated August 16, 1892, and granted to George Albert Boyden, assignor to the I oyden Brake Co., for a valve for air brakes.
In applying and releasing air brakes as now here understood the engineer can only force a r into the train pipe to charge the apparatus and maintain pressure, and release air from the train pipe to remove pressure on that side of a valve, and let it move back and open passages for sending the air under pressure from auxiliary reservoirs to the brake cylinders to apply the brakes. The relief of train pipe…
2Cases cited3 opinions
- Loom Co. v. HigginsSupreme Court of the United States · 1882
- Boyden Power-Brake Co. v. Westinghouse Westinghouse v. Boyden Power-Brake Co.Supreme Court of the United States · 1898
- Westinghouse v. Boyden Power Brake Co.Supreme Court of the United States · 1898
3Cited by1 opinion
- United Electric Co. v. Creamery Package Mfg. Co.District Court, E.D. Wisconsin · 1916