Spool for ribbons, tapes, etc.

• US 4,570,869 A
• Filed: 09/10/1984
• Issued: 02/18/1986
• Est. Priority Date: 09/16/1983
• Status: Expired due to Fees

• Current Assignee: Sanrio Company Limited (SANRIO)
• Original Assignee: Sanrio Company Limited (SANRIO)
• Inventors: Tsuji, Shintaro
• Primary Examiner(s): Christian, Leonard D.
• Application Number:
  US06/649,224
• Time in Patent Office: 526 Days
• Field of Search: 242/71.8, 242/71.9, 242/77.3, 242/118.4, 242/118.5, 242/118.7, 242/118.8, 242/115, 242/116, 474/8
• US Class Current: 242/578.2
• CPC Class Codes: B65H 2701/37 Tapes
• CPC Class Codes: B65H 2701/515 assembled from parts made of different materials
• CPC Class Codes: B65H 75/2227 with a flange fixed to the hub part
• CPC Class Codes: B65H 75/241 axially adjustable reels or bobbins

Abstract

This spool for ribbons, tapes, string, and the like comprises a plastic first cylinder, which ribbons or tapes are coiled around. A projecting flange along one edge of the cylinder helps to hold the ribbons or tapes coiled around it. Fitted inside the first cylinder is an adjustable second cylinder made of the same material. This adjustable second cylinder provides a second flange and includes a series of openings, each having a series of steps, any one of which can engage a projection rib on the inner surface of the first cylinder. The width between the two flanges is thereby determined, and the two cylinders may then be secured in the selected position.

Claims

1. A spool for ribbons, tapes, string and the like, comprising

a plastic first cylinder having an outer cylindrical surface around which ribbon, or tape, or string may be coiled, an inner surface, and a projecting first flange along one edge, said inner surface having a series of identical transverse ribs projecting inwardly therefrom, and

an adjustable plastic second cylinder having a second flange along one edge and a series of identical openings extending in from the other edge, each opening providing a series of steps in a stair-like form, with one of which one end of a transverse rib makes contact, the selection of which steps are engaged by the ribs determining the width between the two flanges of the assembled spool.

2. The spool of claim 1 having three said openings spaced 120°

apart and three said ribs spaced 120°

apart.

3. The spool of claim 1 wherein each said flange has a circular strengthening reinforcing ring on an axially outer surface thereof near the outer end of the flange.

4. The spool of claim 1 wherein said first cylinder is provided with a series of transverse through slots across its cylindrical surface.

5. The spool of claim 1 wherein each of said cylinders has a series of indentations on the edge opposite its said flange.

6. A spool for ribbons, tapes, string and the like, comprising

a plastic first cylinder having an outer cylindrical surface around which ribbon, or tape, or string may be coiled, an inner surface, and a projecting first flange along one edge, said inner surface having a series of evenly spaced-apart identical transverse ribs projecting inwardly therefrom,

an adjustable second cylinder having a second flange along one edge and a series of evenly spaced-apart identical openings extending in from the other edge, one for each said rib, each opening providing along one transverse side a series of steps in a stair-like form, with one of which one end of a transverse rib makes contact, the selection of which steps are engaged by the ribs determining the width between the two flanges of the assembled spool, and

securing means for holding said second cylinders in a selected position.

7. The spool of claim 6 having, across the cylindrical portion of said first cylinder, three evenly spaced apart transverse slots imparting flexibility.

8. The spool of claim 6 wherein both cylinders have, along the edge opposite their flanges, a series of at least three evenly spaced apart semicircular indentations to serve as smoother points.