Canadian Patents Database / Patent 2004002 Summary

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Claims and Abstract availability

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(12) Patent: (11) CA 2004002
(54) English Title: CHAIRS
(54) French Title: CHAISES
(52) Canadian Patent Classification (CPC):
  • 155/34
(51) International Patent Classification (IPC):
  • A47C 3/20 (2006.01)
  • A47C 3/28 (2006.01)
  • A47C 9/02 (2006.01)
(72) Inventors (Country):
  • CORLETT, ESMOND NIGEL (United Kingdom)
(73) Owners (Country):
  • LUEDER, RANI (United States of America)
(71) Applicants (Country):
(74) Agent: FETHERSTONHAUGH & CO.
(45) Issued: 1999-06-22
(22) Filed Date: 1989-11-28
(41) Open to Public Inspection: 1990-05-29
Examination requested: 1992-09-24
(30) Availability of licence: N/A
(30) Language of filing: English

(30) Application Priority Data:
Application No. Country Date
8827846.0 United Kingdom 1988-11-29

English Abstract





A chair is provided with a seat which can support a
user in both a sitting and semi-standing position, the
seat being so shaped to provide a substantially
horizontal surface for the user irrespective of the angle
at which the seat is set.


Note: Claims are shown in the official language in which they were submitted.


THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:


1. A chair comprising:
a seat;
a base structure supporting said seat; and
means for adjusting said seat between two different
positions in which it is held respectively at relatively
lower and higher levels and at different inclinations suited
to use in sitting and semi-standing postures;
said seat being shaped to provide respectively
different transversely extending, substantially horizontal
portions of its upper surface for supporting the weight of
a user at said positions;
and in which said portions are each, when in their
respective weight supporting positions, the highest position
of the seat upper surface and are disposed in a vertical
plane passing through said base structure.

2. A chair as claimed in claim 1 in which the seat is
provided with pivot means, the pivot means being operative
to allow the angle of the seat to be adjusted.

3. A chair as claimed in claim 1 or claim 2 in which
the seat has an upper surface, the upper surface being
cushioned, the cushioning providing a curved surface when
not in use.


4. A chair as claimed in claim 1 in which the vertical
plane remains substantially in the same position relative to


12


the base structure of the chair at each angular position of
the seat.


5. A chair as claimed in any one of claims 1, 2 or 4
in which there is provided:
a seat;
co-operative means for adjusting an angle of tilt
of said seat so as to accommodate needs of said user in any
position in said range, said co-operative means providing
forward and backward rotation of said seat as said seat is
raised or lowered by said means for adjusting said seat
between two different positions in order to alter said angle
of said seat such that legs of said user in said semi-standing
position are clear of a front portion of said seat.


6. A chair as claimed in claim 3 in which there is
provided:
a seat;
co-operative means for adjusting an angle of tilt
of said seat so as to accommodate needs of said user in any
position in said range, said co-operative means providing
forward and backward rotation of said seat as said seat is
raised or lowered by said means for adjusting said seat
between two different positions in order to alter said angle
of said seat such that legs of said user in said semi-standing
position are clear of a front portion of said seat.


13


A single figure which represents the drawing illustrating the invention.

For a clearer understanding of the status of the application/patent presented on this page, the site Disclaimer , as well as the definitions for Patent , Administrative Status , Maintenance Fee  and Payment History  should be consulted.

Admin Status

Title Date
(22) Filed 1989-11-28
(41) Open to Public Inspection 1990-05-29
Examination Requested 1992-09-24
(45) Issued 1999-06-22
Lapsed 2006-11-28

Payment History

Fee Type Anniversary Year Due Date Amount Paid Paid Date
Filing $0.00 1989-11-28
Registration of Documents $0.00 1990-04-20
Maintenance Fee - Application - New Act 2 1991-11-28 $100.00 1991-10-11
Maintenance Fee - Application - New Act 3 1992-11-30 $100.00 1992-10-07
Registration of Documents $0.00 1993-02-09
Maintenance Fee - Application - New Act 4 1993-11-29 $100.00 1993-10-25
Maintenance Fee - Application - New Act 5 1994-11-28 $150.00 1994-10-07
Maintenance Fee - Application - New Act 6 1995-11-28 $150.00 1995-10-19
Maintenance Fee - Application - New Act 7 1996-11-28 $150.00 1996-11-13
Maintenance Fee - Application - New Act 8 1997-11-28 $150.00 1997-10-17
Maintenance Fee - Application - New Act 9 1998-11-30 $150.00 1998-11-17
Filing an Amendment after allowance $200.00 1999-02-22
Final $300.00 1999-03-15
Maintenance Fee - Patent - New Act 10 1999-11-29 $200.00 1999-10-18
Maintenance Fee - Patent - New Act 11 2000-11-28 $200.00 2000-10-18
Maintenance Fee - Patent - New Act 12 2001-11-28 $200.00 2001-10-24
Maintenance Fee - Patent - New Act 13 2002-11-28 $200.00 2002-10-17
Registration of Documents $100.00 2003-07-08
Registration of Documents $100.00 2003-07-08
Maintenance Fee - Patent - New Act 14 2003-11-28 $200.00 2003-11-26
Maintenance Fee - Patent - New Act 15 2004-11-29 $450.00 2004-11-19

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Document
Description
Date
(yyyy-mm-dd)
Number of pages Size of Image (KB)
Cover Page 1999-06-15 1 19
Description 1999-02-22 12 297
Cover Page 1993-12-04 1 13
Abstract 1993-12-04 1 8
Claims 1993-12-04 2 50
Drawings 1993-12-04 6 101
Description 1993-12-04 11 274
Drawings 1998-06-23 6 90
Claims 1998-06-23 2 68
Representative Drawing 1998-07-30 1 9
Representative Drawing 1999-06-15 1 4
Fees 2003-11-26 2 124
Prosecution-Amendment 1999-02-22 3 89
Prosecution-Amendment 1999-03-25 1 1
Correspondence 1999-03-15 1 41
Fees 2004-11-19 1 27
Fees 1996-11-13 1 39
Fees 1995-10-19 1 35
Fees 1994-10-07 1 53
Fees 1993-10-25 1 34
Fees 1992-10-07 1 31
Fees 1991-10-11 1 33