Thiberg v. Bach

107 F. Supp. 639, 95 U.S.P.Q. (BNA) 49, 1952 U.S. Dist. LEXIS 3865
CourtDistrict Court, D. New Jersey
DecidedOctober 3, 1952
DocketCiv. 790-49
StatusPublished
Cited by9 cases

This text of 107 F. Supp. 639 (Thiberg v. Bach) is published on Counsel Stack Legal Research, covering District Court, D. New Jersey primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Thiberg v. Bach, 107 F. Supp. 639, 95 U.S.P.Q. (BNA) 49, 1952 U.S. Dist. LEXIS 3865 (D.N.J. 1952).

Opinion

MEANEY, District Judge.

Plaintiff instituted this action seeking an injunction and an accounting of profits for alleged patent infringement and unfair competition. In addition, alleging that .the character , of the infringement was wilful, wanton and deliberate, plaintiff asks that the damages be trebled. Costs and a reasonable attorney’s fee are also sought. Defendant filed an answer denying both the infringement and the unfair' competition and asserting the invalidity of the letters patent by reason of anticipation by the prior art and prior public use and sale.

The patent in suit, United States Letters Patent #2,471,796 was issued to plaintiff on May 31, 1949 on an application filed October 1, 1945. Plaintiff has been and continues to be the owner of said - patent. Claims three through nine are in suit in the proceeding. Plaintiff’s patent discloses an air' pump for aquarium aerators. It is directed toward a sm'all electromagnetically driven diaphragm pump, with particular reference t'o the structure of the pump chamber and diaphragm assembly, which is disclosed.

The pump chamber designed by Thiberg consists of a base member having at the center of its top surface an upwardly open cavity equipped with inlet and outlet valves. Surrounding this cavity is an upstanding annular ridge or bead. A thick rubber diaphragm is then placed over the cavity and the .surrounding ridge. The diaphragm is clamped to the 'base member by an annular, washer which is secured to said base member by screws. In' the placing and-clamping of the diaphragm in conr junction with the'upstanding.annular ridge and the clamping ring, a domed effect in the diaphragm is produced. The doming effect produces a greater volume of air in the pump chamber before it is operated on by the pressure. This increase in air volume is in direct proportion to the tightness of the diaphragm.

In essence plaintiff’s pump operates in the following manner:. Current coming in energizes a magnet which draws up an armature which is attached to a domed diaphragm. This causes air to be drawn through a valve into the space formed by the depression and the diaphragm. As the cycle continues, the magnet is demagnetized, the ' armature is released and the weight of the armature and the elasticity of the diaphragm cause the diaphragm to drop, forcing the air out through the outlet valve.

Patentee asserts that his new or novel idea is the use of the upstanding annular ridge or bead in combination with a substantially flat . rubber diaphragm and a clamping ring. These form the unique diaphragm assembly which has a twofold purpose. Its first purpose is to combine with the recessed base member and form the pump chamber and its second is to provide greater air volume and a smoother working operation due to the inherent tuning of the apparatus.

The issuance of the letters patent is prima facie evidence of validity. See Smith, Kline & French Laboratories v. Clark & Clark, D.C.D.N.J. 1945, 62 F.Supp. 971.

To overcome this presumption certain prior art patents are advanced by the defendant. Smith Patent #1,976,098 of 1934 discloses the formation of a chamber by use of a diaphragm and a body with a con-caved face. It is pertinent to note the similarity between the language used in this patent and the patent in suit.

Claim one of Smith reads as follows: “In an air pump, a body having a con- *641 caved face, an annular seat in said face, a diaphragm fitting in said seat, an annulus engaging the marginal edge of the diaphragm and suitably secured to said body to thereby secure the diaphragm thereto in leak-proof relation, said diaphragm being spaced from the concaved face of said body and cooperating therewith to provide a chamber * *

Claim 6 of the patent in suit teaches “A pump comprising a base having an upstanding annular ridge, an elastic diaphragm over the ridge and having the outer marginal portions all projecting outside of the ridge and air-tight against the base to form a pump chamber bounded by the base and diaphragm * * * Further, the language of claims 7, 8 and 9 of the patent in suit evidences the same similarity.

Richards Patent #2,265,613 of 1941 relates to the construction of a pump employing a bellows. It teaches the formation of a pump chamber by a bellows having an end secured to the interior wall of a casing. The securing is accomplished by the use of an annular clamping member and clamping screws. It is also pertinent to note that the substitution of a diaphragm, secured at its outer edges by an annular clamping ring and screws, for the bellows, is disclosed in this patent.

Another antecedent patent, Nahman # 1,934,994 of 1933, discloses a flexible annular membrane clamped to the periphery of the pumping body and to the interior of the fixed body to secure an air-tight connection between the same.

The disclosures of the above patents indicate that a diaphragm, and a concave base with the diaphragm secured to said concave base by means of an annular clamping ring, combining to form a pump chamber, are by no means new or novel. Even the combination of the annular clamping ring and the diaphragm to form an air-tight connection has been disclosed by the prior art.

Plaintiff’s patent stresses the uniqueness of its diaphragm assembly. Plowever, the only addition made by plaintiff has been the upstanding annular ridge or bead. His other elements have been, used by his predecessors in the field. When one considers the stress placed on this assembly, both at the trial and in the briefs, the disclosures of the prior art present extremely cogent arguments for the invalidity of the patent.

Farrow Patent #2,253,206 of 1941 also discloses the use of a clamping ring. Here it is used to hold a thin membraneous pumping member (preferably steel) against a valve plate. The result is a fluid collecting chamber.' The membraneous pumping member is placed between the flange on the valve plate and the clamping ring. Screws are provided to hold the pieces in their proper relation. In addition the pumping member is “dished or cupped.” The domed effect disclosed in the patent in suit is created by disposing the diaphragm over the base with its annular bead and placing the clamping ring thereon.

It is apparent from the previous discussion that the plaintiff’s only contribution has been the annular ridge or bead. The alleged doming effect has been produced in the Farrow patent. Further, it is felt that even if “cupping or dishing” had not been disclosed by Farrow, plaintiff’s doming would not be such as to call upon this Court to bestow upon his pump the merit of invention. A combination of previously disclosed elements does not by the mere utilization of the well-known elastic properties of rubber, reveal a “flash of creative genius.” See Cuno Engineering Corp. v. Automatic Devices Corp., 1941, 314 U.S. 84, 62 S.Ct. 37, 86 L.Ed. 58. Rather, it is indicative of the skill of the calling.

Plaintiff offered evidence of commercial success.' There was testimony that the pump in suit filled a void in the field in that it was the first of its kind to possess the qualities of economy and successful operation. Such evidence, without invention, does not make for patentability. See Great Atlantic & Pacific Tea Co. v.

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107 F. Supp. 639, 95 U.S.P.Q. (BNA) 49, 1952 U.S. Dist. LEXIS 3865, Counsel Stack Legal Research, https://law.counselstack.com/opinion/thiberg-v-bach-njd-1952.