# US 4,396,120 A · Packing material

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,396,120 A
- Document ID: US4396120A
- Status: Granted
- Kind: A
- Application number: 06/308,852
- Filed: 1981-10-05
- Granted: 1983-08-02
- Earliest claimed: 1981-08-21
- Assignees: Riken Spring Industry Co., Ltd.
- Inventors: Jiro Morita
- Web page: https://patentgrep.com/patent/US4396120A

## CPC

- B65D 85/08: rod-shaped or tubular
- B65D 73/0014: {by means of separate fixing elements, e.g. clips, clamps, bands}
- B65D 73/0028: {by means of adhesive, heat-seal or the like}
- B65D 75/327: {and forming several compartments}
- Y10S 206/813: Adhesive
- Y10S 206/82: Separable, striplike plural articles
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A packing material especially for coil springs is proposed which provides for neat packing of springs without fear of springs intertwining each other. The packing material has a plurality of grooves or troughs for containing coil springs.

## Claims

### Claim 1

A packing material for coil springs or similar articles, said material comprising a corrugated fiberboard having an adhesive layer on the outer surface of the corrugations to fasten coil springs or similar articles in the grooves between the corrugations.

### Claim 2

A packing material for coil springs or similar articles, said material comprising a trough member having a base and a pair of side wall portions extending upwardly from the base, said side wall portions having at their top end curled lips spaced from each other by a smaller distance than the diameter of said coil spring or similar article to be contained therein.

### Claim 3

A packing material for coil springs or similar articles, said material being made of a flexible material and comprising a body portion formed with a plurality of troughs for accommodating said coil springs or similar articles therein and a covering having an adhesive layer on its underside adapted to cover the upper surface of the body portion with the coil springs contained in said troughs.

### Claim 4 (depends on 3)

The packing material as claimed in claim 3 wherein said covering is provided with a number of perforation lines equal to the number of troughs said perforation lines being spaced to overlie said troughs.

### Claim 5

A packing material for coil springs or similar articles, said material being made of a flexible material and comprising a strip formed with a plurality of troughs for accommodating said coil springs or similar articles therein each of said troughs being provided with a projection at each end thereof to prevent said coil spring or similar article from sliding out of the trough and a further projection at each side of said trough at a position adjacent to the opening of said trough to prevent sidewise movement of said coil springs.