Cord retriever

• US 7,384,013 B2
• Filed: 02/07/2006
• Issued: 06/10/2008
• Est. Priority Date: 02/07/2006
• Status: Expired due to Fees

• Current Assignee: Hsu-Li Yen
• Original Assignee: Hsu-Li Yen
• Inventors: Yen, Hsu-Li
• Primary Examiner(s): Cuomo; Peter M.
• Assistant Examiner(s): KIM, SANG K
• Application Number:
  US11/348,258
• Publication Number:
  US 20070181730A1
• Time in Patent Office: 854 Days
• Field of Search: 242/378, 2423781-3784, 242/422.4
• US Class Current: 242/378
• CPC Class Codes: B65H 75/4434 actuated by pulling on or imparting an inclination to the material
• CPC Class Codes: B65H 75/4442 acting on the reel
• CPC Class Codes: B65H 75/486 Arrangements or adaptations of the spring motor

Abstract

A structural innovation of cord retriever, a structural design for multiple-step control of pulling length of a cord, to achieve the purpose of making adjustment of a cord length as required by the user and fast and smooth retrieving thereof.

Claims

1. A structural innovation of cord retriever, comprising:

a casing, having a recessed part and a recessed track at a middle part thereof;

a mobile top unit, having a recessed opening at one end thereof and a jutted unit at another end thereof;

a bow-like spring unit;

a shaft unit, having a carrier plate, a round recessed part, a shaft post at a center thereof, and a track hole at a lower part of the shaft post;

a turning disc, having a plurality of sectioned openings at a margin thereof to accommodate insertion by a cord unit, a spring groove and a shaft hole at a center thereof to accommodate insertion by a winding spring, having a mobile track groove at a bottom side of the turning disc, inserted by a partitioning ring plate, wherein the cord unit is wound on the outside of the turning disc and an upper cover;

wherein the mobile track groove on the bottom of the turning disc having an inside track groove at a middle part thereof, one side of the inside track groove having a positioning track groove, another side thereof having an outlet and an outside ring track communicating with each other, and, provided near the outlet being a movable inside shifting arm and an outside shifting arm, wherein, the inside shifting arm is pressed against the inside track groove, the outside shifting arm pressed against the outlet; and

, the inside shifting arm and the outside shifting arm being in the shape of a flexible arched arm;

thereby the recessed part and the recessed track of the casing accommodate respectively said mobile top unit and a bow-like spring unit;

wherein, the spring unit is pressed against a margin of the recessed part of the casing, and a middle part of the spring unit being hooked to the recessed opening of the mobile top unit, then fastened by said shaft unit, the track hole at a lower part of the shaft post providing space for reciprocal movement of the jutted unit of the mobile top unit, then the shaft hole of the turning disc inserted by the cord unit is inserted by the shaft post of the shaft unit, and said winding spring is inserted in the spring groove of the turning disc, a starting end at the middle of the winding spring is inserted in the shaft post of the shaft unit, another end of the winding spring is inserted in the turning disc, and then, the upper cover is covered to form a cord retriever.

2. The structural innovation of cord retriever of claim 1, wherein the mobile top unit moves between the recessed track of the casing and the shaft hole of the carrier plate, movement of the mobile top unit being activated by the jutted unit being pressed by the rotating mobile track groove of the turning disc or a flexible anti-tension force from the spring unit.