Cleveland Pneumatic Tool Co. v. Chicago Pneumatic Tool Co.
U.S. Circuit Court for the District of Eastern Pennsylvania
In Equity. Suit for infringement of letters patent No. 665,033, for a pneumatic tool, issued January 1, 1901, to C. B. Richards. On final hearing.
1Opinion of the Court
ARCHBALD, District Judge.
The patent in suit is for a pneumatic tool; the controversy being over that feature of it, by which, through a permanently open port or supply duct, live air is admitted to the rear of the piston or plunger cylinder, and the claims which cover it being given in the margin.1 The advantage claimed for this, in the specifications, is that “at the end of the back stroke the plunger will be cushioned by the live air entering the rear end of the plunger cylinder through the permanently open shallow channel” thereby provided, thus reducing the jar experienced in the use of…
2Cases cited6 opinions
- E. & H. T. Anthony Co. v. GennertCourt of Appeals for the Third Circuit · 1901
- American Pneumatic Tool Co. v. Bigelow Co.U.S. Circuit Court for the District of Connecticut · 1899
- American Pneumatic Tool Co. v. Philadelphia Pneumatic Tool Co.District Court, S.D. New York · 1903
- Computing Scale Co. v. Keystone Store-Service Co.U.S. Circuit Court for the District of Western Pennsylvania · 1898
- Whitaker Cement Co. v. Huntington Dry Pulverizer Co.Court of Appeals for the Third Circuit · 1899
1 more not listed; retrieve them via the Exa API.
3Cited by2 opinions
- Boyer v. Cleveland Pneumatic Tool Co.Court of Appeals for the Sixth Circuit · 1911
- Chicago Pneumatic Tool Co. v. Keller Pneumatic Tool Co.Court of Appeals for the Third Circuit · 1923