THK America, Inc. v. United States

17 Ct. Int'l Trade 1169, 837 F. Supp. 427, 17 C.I.T. 1169, 15 I.T.R.D. (BNA) 2379, 1993 Ct. Intl. Trade LEXIS 210
CourtUnited States Court of International Trade
DecidedNovember 1, 1993
DocketCourt No. 90-09-00488
StatusPublished
Cited by4 cases

This text of 17 Ct. Int'l Trade 1169 (THK America, Inc. v. United States) is published on Counsel Stack Legal Research, covering United States Court of International Trade primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
THK America, Inc. v. United States, 17 Ct. Int'l Trade 1169, 837 F. Supp. 427, 17 C.I.T. 1169, 15 I.T.R.D. (BNA) 2379, 1993 Ct. Intl. Trade LEXIS 210 (cit 1993).

Opinion

Opinion

Tsoucalas, Judge:

This action comes before the Court after trial de novo on November 10-24, 1992. Plaintiff, THK America, Inc. (“THK”), challenges the United States Customs Service’s (“Customs”) classification of plaintiffs imports of Linear Motion Guide Systems (“LMGs”) as ball bearings pursuant to Harmonized Tariff Schedule of the United States (“HTSUS”) 8482.10.50. The Court has jurisdiction pursuant to 28 U.S.C. § 1581(a) (1988).

Background

The merchandise at issue, the Linear Motion Guide System, consists of two main components: a steel block and a matching rail. The LMG’s block is composed of a hardened steel block, four rows of steel balls, a retainer, plastic end plates, rubber seals and a grease nipple. The block moves in a linear fashion along the rail while supporting a load. The balls in the steel block act as an antifriction device and facilitate accurate positioning of the load. Plaintiffs Exhibits 1, 2, 3.

The balls in the steel block recirculate along four elliptical paths. These paths are comprised of a loading zone and an unloading zone. The [1170]*1170loading zone is the portion of the path formed by grooves ground into the block and along the rail. This is the zone where contact between the steel block and the rail occurs through the balls. Trial Transcript (“T.T.”) at 170. The unloading zone consists of elbow-shaped paths at the end plates and a return tube drilled through the block. It allows recirculation of the balls but does not support any load. Id.

The rail of the LMG is a steel “T-shaped” rail. The top portion of the rail has four longitudinal grooves ground into it. Id. at 417. These grooves are “crowned.” Crowning is the slight angling at the sides of the longitudinal grooves which helps to prevent drastic deformation of the steel balls as they enter the loading zone that could produce unwanted vibrations in the system when moving the load. When the block moves along the rail, the recirculating balls travel along these grooves from a loaded to an unloaded state. Holes are drilled through the rail and also through the block to facilitate mounting of these components to a bed and table respectively. Id. at 232, 416-17.

LMGs are sometimes used in configurations of multiple blocks and rails, e.g., two rails and four blocks or one rail and two blocks. These various configurations allow each block to share equally in the absorption of erratic movements caused by distorted mounting surfaces. Id. at 286-88, 293, 432-33, 652.

Each combination of blocks and rails is a unique set. They are made and sold together. A user can install the system by mounting the rail onto the surface of a bed and mounting the table on the block. Id. at 153, 164.

THK has been shipping this type of merchandise to the United States since the early 1970’s. LMGs are mainly used by the machine tool and automotive industries in machine tools that require high accuracy in positioning control. Id. at 28. As the machine tool industry in the United States began to decline, THK shifted its marketing strategies and targeted its sales toward other industries which require high accuracy in positioning control. Examples of machine tools utilizing LMGs include lathes, welding robots, “pick and place” robots, and x-ray machines and tables. Id. at 31, 33—39; see Plaintiff's Exhibits 7, 9, 10, 11.

LMGs were developed to replace the conventional slide, commonly known as the slide bearing or plain bearing. T.T. at 189, 370. A slide is a positioning mechanism used to transport and position machinery parts in a linear direction. A slide basically consists of a sliding saddle, an-tifriction material and a sliding guide surface. Id. at 203; Plaintiffs Exhibit 33. Conventional slides are limited in their positioning accuracy due to the magnitude of friction encountered in various applications and the need for clearance between the parts of the slide to overcome this friction. Clearance in a slide is the open space between the two sliding surfaces which allows for the introduction of a lubricant which reduces friction. Clearance is essential for the slides’ movement but may cause the load to move erratically thus degrading positioning accuracy. T.T. at [1171]*1171208-09. All conventional slides have various degrees of clearance which produce a different range of accuracy in positioning. Id. at 562-64.

THK’s LMGs were developed from the ball bushing. Plaintiffs Exhibit 28. A ball bushing is cylindrical in shape and encompasses six rows of balls rolling in a longitudinal direction on the inner surface of the ball bushing. The load that a ball bushing can carry is small. T.T. at 191. The ball bushing travels linearly on a cylindrical shaft.

From ball bushings, THK developed the ball spline. This product is a cylinder containing six rows of balls which roll in a longitudinal direction on the inside of the ball spline. This cylinder fits over a circular shaft with three longitudinal projections with grooves on each side of the projections. The rows of balls in the cylinder grab the grooved projections on the shaft. The ball spline also moves linearly along the cylindrical shaft but has greater positioning rigidity and load capacity than the ball bushing. Id. at 191-92; Plaintiffs Exhibit 31. A series of improved LMGs were subsequently developed from the ball spline. Each new LMG provided a greater load capacity, greater rigidity and greater accuracy in terms of the movement and positioning of loads. T.T. at 193-201; Plaintiffs Exhibit 28.

In its catalogs and brochures prior to 1986, THK described its linear bearings, including LMGs, as antifriction bearings and linear bearings. Defendant’s Exhibits A-E. It advertised its LMGs to the machine tool industry as “the Very Best in Japanese Linear Bearing Technology.” Plaintiffs Exhibit 4; T.T. at 18-19. Plaintiffs witness, Mr. Yoichi Mat-sushita, Executive Vice President of THK America, testified that in 1986 THK began changing its marketing strategy and stopped referring to these products as antifriction bearings or linear bearings and started to refer to them solely as Linear Motion Guide Systems. Id. at 28-29.

In addition, the patents for LMGs described and categorized LMGs as “linear ball bearing unit”; “linear motion ball bearing unit”; “linear ball bearing”; “linear slide ball bearing”; “recirculating ball linear bearing”; “linear sliding ball bearing” and “rectilinear slide ball bearing.” Defendant’s Exhibits L1-L10.

On December 5,1977, Customs issued Headquarters Ruling 053086 classifying products similar to THK’s LMGs under item 680.90 of the Tariff Schedules of the United States (“TSUS”) which provided in part “machinery parts not containing electrical features and not specifically provided for.” Plaintiffs Exhibit 13. On June 3,1983, Customs issued a new Headquarters Ruling 072587 changing the classification of linear motion bearings from TSUS 680.90 to TSUS 680.39, the provision for ball and roller bearings. Defendant’s Exhibit Ml. This ruling was intended to encompass all imported linear bearings including THK’s LMGs. T.T. at 467.

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17 Ct. Int'l Trade 1169, 837 F. Supp. 427, 17 C.I.T. 1169, 15 I.T.R.D. (BNA) 2379, 1993 Ct. Intl. Trade LEXIS 210, Counsel Stack Legal Research, https://law.counselstack.com/opinion/thk-america-inc-v-united-states-cit-1993.