STEPLESS ADJUSTABLE FILM PACKING DEVICE

• US 20110041458A1
• Filed: 08/19/2009
• Published: 02/24/2011
• Est. Priority Date: 08/19/2009
• Status: Abandoned Application

• Current Assignee: Hsiu-Man Yu Chen
• Original Assignee: Hsiu-Man Yu Chen
• Inventors: YU CHEN, Hsiu-Man
• Application Number:
  US12/543,720
• Publication Number:
  US 20110041458A1
• Time in Patent Office: Days
• US Class Current: 53/389.4
• CPC Class Codes: B65B 67/085 using hand-held dispensers for stretch films
• CPC Class Codes: B65H 2701/1752 Polymer film
• CPC Class Codes: B65H 75/2413 adjustable by threaded means

Abstract

A stepless adjustable film packing device for a roll of film without a reel includes a first tube and a second tube. The first tube is formed with a first threaded portion. The second tube is formed with a second threaded portion corresponding to the first threaded portion of the first tube for engaging with the first threaded portion. Thereby, the length of the film packing device is adjustable by adjusting the first threaded portion with respect to the second threaded portion according to the width of a roll of film.

Claims

1. A step-less adjustable film packing device, comprising:

a first tube having two ends defining a coupling end and an insertion end respectively;

the first tube having an outer wall longitudinally being formed with a first threaded portion;

a first stop portion being provided on the insertion end of the first tube;

the first tube having a coupling section close to the coupling end;

the first tube having an insertion section close to the insertion end;

a second tube coupled to the first tube, the second tube having two ends defining a coupling end and an insertion end respectively, a second threaded portion being provided on an inner wall close to the coupling end of the second tube and corresponding to the first threaded portion of the first tube for engaging with the first threaded portion, the length of the film packing device being adjustable by adjusting the first threaded portion with respect to the second threaded portion, a second stop portion being provided on the insertion end of the second tube;

a connecting portion disposed between the first stop portion and the first tube is provided with a plurality of ribs thereon, each of the plurality of ribs being gradually protruded towards the first stop portion;

the coupling section having an outer diameter slightly less than an inner diameter of the second tube for inserting in the second tube;

the insertion section of the first tube being gradually reduced towards the coupling section to be in a truncated conical shape; and

an outer diameter of the insertion section close to the insertion end being equal to an outer diameter of the second tube.

3. The step-less adjustable film packing device as claimed in claim 1, wherein the first threaded portion is in the form of male threads and has two sections with teeth protruding outwardly from two opposite sides of the first tube.

4. The step-less adjustable film packing device as claimed in claim 3, wherein the first threaded portion has one end extending to the coupling end of the first tube and an opposite end extending towards the insertion end of the first tube.

5. The step-less adjustable film packing device as claimed in claim 1, wherein the second threaded portion is in the form of female threads disposed around the inner wall of the second tube.

6. The step-less adjustable film packing device as claimed in claim 1, wherein the first stop portion is an annular flange extending outwardly from the insertion end of the first tube.

8. The step-less adjustable film packing device as claimed in claim 1, wherein a connecting portion disposed between the first stop portion and the first tube is gradually enlarged for the insertion end of the first tube to be in the form of a bell.

9. The step-less adjustable film packing device as claimed in claim 1, wherein the second stop portion is an annular flange extending outwardly from the insertion end of the second tube.

10. The step-less adjustable film packing device as claimed in claim 1, wherein a connecting portion disposed between the second stop portion and the second tube is provided with a plurality of ribs thereon, each of the ribs being gradually protruded towards the second stop portion.

11. The step-less adjustable film packing device as claimed in claim 1, wherein a connecting portion disposed between the second stop portion and the second tube is gradually enlarged for the insertion end of the second tube to be in the form of a bell.

2. (canceled)

7. (canceled)