Detroit Showcase Co. v. Kawneer Mfg. Co.

250 F. 234, 162 C.C.A. 370, 1918 U.S. App. LEXIS 1884
CourtCourt of Appeals for the Sixth Circuit
DecidedApril 5, 1918
DocketNo. 3089
StatusPublished
Cited by15 cases

This text of 250 F. 234 (Detroit Showcase Co. v. Kawneer Mfg. Co.) is published on Counsel Stack Legal Research, covering Court of Appeals for the Sixth Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Detroit Showcase Co. v. Kawneer Mfg. Co., 250 F. 234, 162 C.C.A. 370, 1918 U.S. App. LEXIS 1884 (6th Cir. 1918).

Opinion

KNAPPEN, Circuit Judge.

Suit for infringement of United States patents No. 852,450, May 7, 1897, and No. 860,150, July 16, 1907, both [236]*236to Francis J. Plym, and for alleged unfair competition in connection with the making, selling, and using of the alleged infringing devices. The District Court found both patents valid and infringed, and also found for complainant on the issue of unfair competition. 240 Fed. 737. This is an appeal from the interlocutory decree for injunction and accounting on both features of the case.

[1] 1. Patent No. 852,450 (for convenience called the first patent) ■ relates to store front construction. Claims 5, 6, and 7 are involved. This patent was before us in Toledo Plate, etc., Co. v. Kawneer Mfg. Co., 237 Fed. 364, 150 C. C. A. 378, and the claims here in suit were there held valid as against all the references to the prior art cited here. We refer to the report of that case for a description of the patent and a statement of the claims. The patent must be held valid here. On the subject of infringement, the only question is whether defendant’s gutter member is “resilient,” as defined in our former opinion. This question is purely one of fact.' The claimed demonstration of non-resiliency presented failed to satisfy the court below, which was convinced by its own independent experiments that there was present .substantial resiliency, within the definition of that term recognized in our opinion in the Toledo Case. We are satisfied that defendant’s device has fully as much resiliency as had the “scant bracket” construction we held in the Toledo Case to infringe. The decree of the court below as to the first patent must be affirmed.

[2,3] 2. Patent No. 860,150 relates not only to store front but to showcase construction, and the invention is designed to provide a simple, strong, durable, inexpensive, and ornamental connection between the glass plates. The device is well enough illustrated by Fig. 3 of the patent drawings, which is a horizontal section of one of the suggested forms which, the connecting device may take, although this particular form is adapted only to the connection between two aligned plates. The device is available for plates at right angles to each other, as in corner pieces. '

In the drawing 1 indicates a .channeled face plate, % the glass plates, 3 the flanges projecting in opposite directions from the channeled plates, overlapping and bearing against the outer face of the glass plates, 4 a back plate with V-shaped wings 5, pressing the glass plate outwardly against the flanges of the face plate, 6 a stiffening bar fitting into the channeled back plate, y bolts extending through the front and back plates and the stiffening bar, and 8 nuts engaging the inner ends of the bolts and bar, clamping the plates in the desired relation.- In practice the independent stiffening bar 6 may be dispensed with, its place being supplied by a construction of [237]*237the back plate J¡. following, for example, the outlines of the bar 6, thereby providing the needed stiffening. As thus far described the structure was old in the aft. As recognized by the inventor in the specifications of his patent, the only new element provided by him is the so-called “filling strip” 9, provided with inwardly projecting flanges JO, between which the bolts extend and against the outer ends of which the heads of the bolts bear. The inventor declares the purpose of this filling strip to be “providing a finish for the store front or showcase and to prevent tampering with the bolts,” saying:

“This filling strip is adapted to be slipped into the channel of the face plate from one end of the latter before the face plate is secured in position and after the bolts have been slipped through it, the nuts being evenly turned to clamp the parts in the desired relation.”

The only claims in suit are Nos. 1 and 2, which read as follows:

“1. The combination of a channeled front plate, a back plate, a channeled filling strip occupying the channel of the front plate and headed fastening devices extending through the channeled plate and the back plate and having their heads within the channeled filling strip to be covered by the same.
“2. The combination of a channeled front plate provided with lateral flanges, a back plate of the same and provided with resilient wings, a stiffening part engaging the back plate, bolts extending through the channeled front plate, the back plate, and the stiffening part, and a channeled filling strip occupying and closing the channel of the front plate and clamped in position by said bolts.”

The second claim differs substantially from the first only in calling for “lateral flanges” for the front plate, “resilient wings” for the back plate, and a “stiffening part” therefor. The validity of the claims is not assailed. The question is thus one of infringement. Defendant’s structure differs from the device of the patent in this: The channel of the front plate opens inwardly, instead of outwardly, as in the device of the patent; the heads of the bolts thus being invisible from the outside. The channel of the front plate is always open, the heads of the bolts connecting the front and back plates being gripped by the in-turned flanges forming the lower edges of the side walls of the channel of the front plate. It thus lacks, as a separate element, the “channeled filling strip” of the patent, which, as already said, is the only new element of the claims in suit. The lea'rned District Judge was of opinion that the structure was identical with plaintiff’s device, “excepting that the defendant, by removing the bottom part of what plaintiff calls the channel front plate, has impaired to that extent the function which that plate is to perform,” and that the case is one for the application of the rules that an infringer cannot escape liability by diminishing or impairing the advantages and functions of the patented device, if lie retains the substantial form, function, and manner of operation, nor by forming in one part two elements of a patented device, if the part thus formed secures the same result, in substantially the same way, as the two elements.

But the pivotal question is whether the case presented is merely that of making in one part that which before was made in two parts, the integral structure continuing to perform all the functions of the former two-part device, and in substantially the same way, or whether it falls within the rule that a combination .claim is not infringed if one [238]*238of its elements is omitted without the substitution of an equivalent. Were plaintiff's invention a broad or primary one, it might i>e held that defendant has merely made integral what before was made in separate parts. But the patent claims, and their, range of equivalents, are narrow. There was nothing new in concealing the heads of the screws, nor in the use of a round central strip. The inventor’s only contribution to the art was in the form and manner of accomplishing this old result, viz. by “a channeled filling strip occupying [and closing] the channel of' the front plate.” Defendant has hut one of these elements. If this element is a front plate at all, there is no “channeled filling strip,” and for the sufficient reason that there was no occasion for one.

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Bluebook (online)
250 F. 234, 162 C.C.A. 370, 1918 U.S. App. LEXIS 1884, Counsel Stack Legal Research, https://law.counselstack.com/opinion/detroit-showcase-co-v-kawneer-mfg-co-ca6-1918.