Folding chair

• US 6,547,321 B2
• Filed: 07/17/2001
• Issued: 04/15/2003
• Est. Priority Date: 07/17/2001
• Status: Expired due to Fees

• Current Assignee: Chung-Sen Wu
• Original Assignee: Chung-Sen Wu
• Inventors: Wu, Chung-Sen
• Primary Examiner(s): Cuomo, Peter M.
• Assistant Examiner(s): Harris, Stephanie N.
• Application Number:
  US09/907,884
• Publication Number:
  US 20030015892A1
• Time in Patent Office: 637 Days
• Field of Search: 297/42, 297/45, 297/16.1, 297/43, 297/44, 163/57, 163/61, 403/93, 403/94, 403/96
• US Class Current: 297/16.1
• CPC Class Codes: A47C 4/286 foldable side to side and front to back, e.g. umbrella type
• CPC Class Codes: A47C 4/30 Attachment of upholstery or fabric to frames in general A47C31/02
• CPC Class Codes: A47C 9/105 having several foldable or detachable legs converging in one point
• CPC Class Codes: Y10T 403/32336 Engaging notch or recess in outer periphery of component

Abstract

A folding chair has a seat, a first leg, a second leg, a first rod connected to the first leg and the second leg, a second rod connected to the first leg and the second leg, and a folding device. The folding device has a first joint and a second joint. The first joint has a guide channel, a circular aperture, and a slant round hole for receiving the first rod. The second joint has a post inserted in the guide channel, a hollow protruded block inserted in the circular aperture of the first joint, a round through aperture, and a slant circular hole for receiving the second rod. A bolt passes through the round through aperture of the second joint and the circular aperture of the first joint. A nut engages with the bolt.

Claims

1. A folding chair comprising:

a seat, a first leg mounted on a bottom of the seat, a second leg mounted on the bottom of the seat, a first rod connected to an upper end of the first leg and a lower end of the second leg, a second rod connected to a lower end of the first leg and an upper end of the second leg, and a folding device,

the folding device having a first joint and a second joint coupled with the first joint,

the first joint having an arcuate guide channel, a circular aperture, and a slant round hole for receiving the first rod,

the second joint having a post inserted into and slidably mounted in the arcuate guide channel of the first joint, a hollow protruded block inserted into and rotatably mounted in the circular aperture of the first joint, a round through aperture, and a slant circular hole for receiving the second rod,

a bolt passing through the round through aperture of the second joint and the circular aperture of the first joint, and

a nut engaged with the bolt.