Legal Opinion
Otis Elevator Co. v. Atlantic Elevator Co.
Court of Appeals for the Second Circuit
Decided February 2, 1931No. 207PublishedCited by 15 opinions
1Opinion of the Court
L. HAND, Circuit Judge.
The patent is for a device to bring electric elevators to a stop at the exact level of the floor. It applies primarily to elevators operated on the so-called Leonard system, which all the claims include as an element. This has a cage operated by an electric motor, which coils and uncoils the sustaining cables upon a sheave; the motor being driven by a generator of the usual type. The peculiarity of the Leonard system is that the field winding of the generator is so arranged that the current can be reversed by a switch in the cage, by which the operator, as the ear…
2Cases cited29 opinions
- Topliff v. TopliffSupreme Court of the United States · 1892
- White v. DunbarSupreme Court of the United States · 1886
- Miller v. Brass Co.Supreme Court of the United States · 1882
- Mahn v. HarwoodSupreme Court of the United States · 1884
- Cimiotti Unhairing Co. v. American Fur Refining Co.Supreme Court of the United States · 1905
24 more not listed; retrieve them via the Exa API.
3Cited by15 opinions
- Georgia-Pacific Corporation v. United States Plywood CorporationCourt of Appeals for the Second Circuit · 1958
- Cutter Laboratories, Inc. v. Lyophile-Cryochem CorporationCourt of Appeals for the Ninth Circuit · 1950
- Keith v. Charles E. Hires Co.Court of Appeals for the Second Circuit · 1940
- H. W. Roos Co. v. McMillanCourt of Appeals for the Sixth Circuit · 1933
- Monogram Mfg. Co. v. Glemby Co.Court of Appeals for the Second Circuit · 1943
10 more not listed; retrieve them via the Exa API.