Unlock instant, AI-driven research and patent intelligence for your innovation.

Ring attachment

A technology of loose-leaf and leaf paper, applied in the field of loose-leaf rings, which can solve the problems of large size of loose-leaf rings, inconvenient operation, tearing of loose-leaf paper, etc., and achieve the effect of easy flipping, convenient operation, and smooth flipping

Inactive Publication Date: 2007-10-03
LECO STATIONERY MFG CO LTD
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A shortcoming of this known loose-leaf ring is that when the loose-leaf ring needs to be opened, it is necessary to forcefully pull the laterally opposite hook portions of the two half-ring parts to the outside to make them misaligned, and then pull the two half-ring parts by hand to make them Rotate away from each other around pins to open rings
It is very inconvenient to operate, and as the number of opening and closing increases, it will deform the two half-ring parts and cannot lock them together reliably
[0004] A further disadvantage of this known binder ring is that, in the position where the two half-ring parts are connected to each other by pins, the size of the binder ring in this position becomes significantly larger due to the two half-ring parts interlaced.
Obstructs and even tears the loose-leaf pages when they need to be turned over while held on the rings

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ring attachment
  • Ring attachment
  • Ring attachment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The loose-leaf ring 1 according to the present invention will be described in detail below with reference to the accompanying drawings. The loose-leaf ring 1 according to the invention comprises two half-ring parts 3 and 5 . The cross-sections of the half-ring parts 3 and 5 are shown as circular in the figures, but could also be semi-circular, elliptical or rectangular in cross-section. The shape of the half-ring parts 3 and 5 itself is respectively semicircular, but as known, the half-ring parts 3 and 5 can also be other shapes, for example, one is a semicircle, and the other is substantially "]" shape, After closing, a substantially D-shaped ring is formed. Interfitting portions 7 and 9 are respectively formed at the free ends of the two half-ring parts 3 and 5 to prevent the two half-ring parts from being unintentionally disengaged in the closed state. The interfitting portions 7 and 9 shown in the figure are respectively a cylindrical protrusion formed on the half...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A loose-leaf ring for holding the loose-leaf book is composed of two half-rings for holding the loose-leaf pages and an elastic jointer for jointing said two half-rings in movable mode.

Description

technical field [0001] The present invention relates to loose-leaf rings for holding loose-leaf pages. Background technique [0002] In addition to using binder clips to hold loose-leaf paper, such as perforated paper, binder rings are also commonly used to hold loose-leaf paper for convenience and cost savings. Known loose-leaf rings generally include two half-ring parts, which are connected to each other in a staggered manner at one end by a connecting member such as a pin, and allow the two half-ring parts to pivot around the pin within a certain range, so as to Opens or closes two half-ring sections. The two half-ring parts are respectively formed with laterally opposite hook portions at the other ends. The two half-ring parts can be locked together without disengagement by the mutual engagement of the laterally opposite hook portions. [0003] A shortcoming of this known loose-leaf ring is that when the loose-leaf ring needs to be opened, the laterally opposite hook ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B42F3/04
CPCB42F3/04
Inventor 郑洪如
Owner LECO STATIONERY MFG CO LTD