Patent US6550866B1 successfully refreshed from Google Patents.
US6550866B1
Expired / Lapsed
US
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Chair backrest with ventilating function
Assignee: Individual
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Filing: 2002-01-24
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Granted: 2003-04-22
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Expires: 2022-01-24
Abstract
Abstract A chair backrest comprises a frame, a support member, and a net. The frame is a loop-like member and includes a groove. The frame further includes an engaging portion to be securely connected to a seat of a chair. The support member is made of rigid material and mounted in the groove. The support member includes an engaging piece securely connected to the engaging portion of the frame. The net is made of soft material. The net encloses the frame and includes a peripheral edge mounted along an outer peripheral face of the frame.
Inventors
- 👤 Tung-Hua Su
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:30
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/282; A47C7/62; A47C7/72; A47C7/74; A47C7/742
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
144 words
A chair backrest comprising: a frame ( 1 ) that is a loop-like member and that includes a groove ( 12 ), the frame ( 1 ) further including an engaging portion ( 16 ) adapted to be securely connected to a seat of a chair, the frame ( 1 ) further including an outer peripheral face ( 11 ); a support member ( 2 ) made of rigid material and mounted in the groove ( 12 ), the support member ( 2 ) including an engaging piece ( 22 ) securely connected to the engaging portion ( 16 ) of the frame ( 1 ); and a net ( 3 ) made of soft material, the net enclosing the frame ( 1 ) and including a peripheral edge mounted along the outer peripheral face ( 11 ) of the frame ( 1 ).
Claim 2
Dependent Claim
144 words
A chair backrest comprising: a frame ( 1 ) that is a loop-like member and that includes a groove ( 12 ), the frame ( 1 ) further including an engaging portion ( 16 ) adapted to be securely connected to a seat of a chair, the frame ( 1 ) further including an outer peripheral face ( 11 ); a support member ( 2 ) made of rigid material and mounted in the groove ( 12 ), the support member ( 2 ) including an engaging piece ( 22 ) securely connected to the engaging portion ( 16 ) of the frame ( 1 ); and a net ( 3 ) made of soft material, the net enclosing the frame ( 1 ) and including a peripheral edge mounted along the outer peripheral face ( 11 ) of the frame ( 1 ).
Claim 3
Dependent Claim
66 words
The chair backrest as claimed in claim 1 , wherein the engaging portion ( 16 ) of the frame ( 1 ) includes a receiving groove ( 14 ) that is communicated with the groove ( 12 ), the engaging piece ( 22 ) of the support member ( 2 ) being inserted into the receiving groove ( 14 ) via the groove ( 12 ).
Claim 4
Dependent Claim
52 words
The chair backrest as claimed in claim 1 , wherein a wall defining the groove ( 12 ) includes plural fixing holes ( 13 ), the support member ( 2 ) including plural fixing holes ( 21 ), further comprising fasteners extending through said plural fixing holes ( 13 and 21 ).
Claim 5
Dependent Claim
53 words
The chair backrest as claimed in claim 1 , wherein the engaging portion ( 16 ) includes plural engaging holes ( 18 ), further comprising a lid ( 19 ) having plural engaging members ( 191 ) for securely engaging with said plural engaging holes ( 18 ), thereby covering said plural fasteners.
Claim 6
Dependent Claim
73 words
The chair backrest as claimed in claim 1 , wherein the frame ( 1 ) includes plural fixing holes ( 15 ), further comprising an outer member ( 4 ) covering the net ( 3 ) along the peripheral edge of the net ( 3 ), the outer member ( 4 ) including plural fixing holes ( 41 ), further comprising fasteners extending through said plural fixing holes ( 15 and 41 ).
Claim 7
Dependent Claim
109 words
The chair backrest as claimed in claim 1 , wherein the engaging piece ( 22 ) includes plural fixing holes ( 23 ), the engaging portion ( 16 ) including plural fixing holes ( 17 ), further comprising an attachment plate ( 7 ) including a first end having plural fixing holes and a second end securely attached to the seat of the chair, further comprising fasteners extending through said plural fixing holes ( 17 ) of the engaging portion ( 16 ), said plural fixing holes ( 23 ) of the engaging piece ( 22 ), and said plural fixing holes of the attachment plate ( 7 ).
Claim 8
Dependent Claim
17 words
The chair backrest as claimed in claim 1 , further comprising a pillow attached to the backrest.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-04-21 | 2006-10-21 | 2007-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-04-21 | 2010-10-21 | 2011-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-04-21 | 2014-10-21 | 2015-04-22 | $7700.00 | Window Closed / Lapsed |