National Electric Products Corporation v. Grossman, 374.
| Citation | 70 F.2d 257 |
| Decision Date | 02 April 1934 |
| Docket Number | No. 374.,374. |
| Parties | NATIONAL ELECTRIC PRODUCTS CORPORATION v. GROSSMAN. |
| Court | United States Courts of Appeals. United States Court of Appeals (2nd Circuit) |
Mock & Blum, of New York City, for appellant.
John C. Kerr and George F. Des Marais, both of New York City, for appellee.
Before MANTON, SWAN, and CHASE, Circuit Judges.
This suit is for infringement of patent No. 1,687,013, the validity of which we sustained in National Electric Products Corporation v. Circle Flexible Conduit Co., 62 F.(2d) 996, 997. The invention is for improvements in the construction of electric conduits having metallic shields known as armored cables or conduits. Cables theretofore consisted of two or more insulated conductors inclosed in an interlocked covering of insulated material as braided or woven fabric about which the spirally wound metallic shield was placed. There were objections to this construction. To meet the objections, this inventor used, instead of the old braided outer covering, a spirally wound overlapping layer of compressible material about the assembled conductors; the material providing additional protection to the insulated conductors during the operation of cutting the armor and also being adapted to be readily unwound and stripped off the conductors by hand, thus avoiding the use of a knife or other sharp instrument. This compressible material, spirally wound, co-operates in the introduction of the insulated bushing, as is necessary, and provides space between the metallic armor and the insulated conductor for the insertion of the bushing. In other words, the space is provided by unwinding and turning out a few turns of compressible material inside the severed end of the armor. We said in National Electric Products Corp. v. Circle Flexible Conduits Co., supra:
In the defense interposed here, new prior art was disclosed, namely, a patent to Johnson No. 1,757,049 granted May 6, 1930, on an application filed September 20, 1926....
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