US3053496A - Spring biased chair seat - Google Patents
Spring biased chair seat Download PDFInfo
- Publication number
- US3053496A US3053496A US45221A US4522160A US3053496A US 3053496 A US3053496 A US 3053496A US 45221 A US45221 A US 45221A US 4522160 A US4522160 A US 4522160A US 3053496 A US3053496 A US 3053496A
- Authority
- US
- United States
- Prior art keywords
- chair
- seat
- ring
- spring biased
- toes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C9/00—Stools for specified purposes
- A47C9/02—Office stools not provided for in main groups A47C1/00, A47C3/00 or A47C7/00; Workshop stools
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C9/00—Stools for specified purposes
- A47C9/02—Office stools not provided for in main groups A47C1/00, A47C3/00 or A47C7/00; Workshop stools
- A47C9/025—Stools for standing or leaning against, e.g. in a semi-standing or half-seated position
Definitions
- the invention relates to a piece of furniture for use in factories, laboratories, and other places, where work has to be done which, while normally preformed standing at machines, tables and the like and unsuitable for one reason or another for being performed sitting can, with advantage be performed in a half-seated position.
- the body When in the standing position, the body is supported by two points of support, namely the feet, whereas in the half-seated position the weight of the body is supported at three points, viz. both feet and the buttocks, the major part of the weight is borne by the seat of the piece of furniture on which the body rests and only a minor part of the weight is transferred to the floor by the feet.
- the invention is concerned with the provision of a chair, stool or similar article (hereinafter referred to generically as a chair) which can be used -in the halfstanding position while giving the user full liberty of movement and without putting the user in a state of unbalance when moving from ⁇ one position to the other. Furthermore, the ⁇ chair affords security for the user by its stability.
- the chair in accordance with the invention is designed so as to enable the user, when in the half-seated position, to move sideways and forwardly with the feeling that he will always retain a completely stable position within wide limits.
- the ring is shaped so that the user in the half-seated position can move himself forwardly, to the left and to the right but not backwardly.
- the ring can have the shape of a sector of a circle.
- the foot preferably has four toes disposed similarly to the toes of a fowl, i.e. one toe extending backwardly, one forwardly and the remaining two at angles of about 60 to the forwardly extending toe.
- a spring can usefully be provided which biasses the seat column towards its vertical position.
- FIGURE 1 shows the chair in sectional elevation
- FIGURE 2 is a sectional plan taken on the line II-II in FIGURE 1.
- the chair shown in the drawings has a foot having four toes 1-2-3--4
- the toe 4 extends backwards; the toe 2 extends forwards in line with the toe 4; and the toes 1 and 3 extend forwards and sideways at an angle of about 60 to the toe 2.
- a ring y10 which surrounds the column 5 and is shaped and disposed so that the upper part of the column can be moved out of its vertical position forwardly and sideways but not backwards.
- the ring has the shape of a sector of a circle and the upper part 8 of the column, when in its vertical position, lies in the crutch of the sector.
- a spring 11 is provided which urges the upper part of the column into line with the lower part so that the column always tends to assume a vertical position.
- the shape and the size of the ring 10 are such that a vertical line from the middle of the seat 9 always falls within the area described by the extremities of the toes 1-2-3-4, so that the chair always remains completely stable and gives a feeling of security to the user.
- a chair comprising a base including a first pair of diametrically opposed toes and a second pair of toes defining therebetween an angle of less than the second pair of toes being symmetrically positioned relative to the first pair, seating means supported on said base for pivotal movement and a rigid ring rigidly supported on ⁇ said base and having a peripheral extent, said ring being operatively associated with said seating means to restrict the pivotal movement thereof in conformity with the peripheral extent of the ring, said ring including an arcuate portion having ends and a V-shaped portion ⁇ connected to said ends.
- V- shaped portion includes ⁇ a pair of legs, said legs being parallel to said second pair of toes.
- a chair as claimed in claim l wherein said seating means includes a shaft supported for pivotal movement on said base and a seat on said shaft, said ring surrounding said shaft, the chair ⁇ further comprising spring means coupled to said shaft and to said base for elastically resisting pivotal movement of said shaft relative to the base.
Landscapes
- Chairs Characterized By Structure (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Description
Sept# 11T, 19152' J. P1.: c; vfANf LEEUWEN I 3,053,496'v SPRING BISEIDS @HAIR SEAT 3,053,496 SPRING BIASED CHAIR SEAT Johannes P. C. van Leeuwen, Almelo, Netherlands, as-
signor to Textiel Machines Reading NV., Almelo, Netherlands, a limited-liability company of the Netherlands Filed .'luly 25, 1960, Ser. No. 45,221 3 Claims. (Cl. 248-382) The invention relates to a piece of furniture for use in factories, laboratories, and other places, where work has to be done which, while normally preformed standing at machines, tables and the like and unsuitable for one reason or another for being performed sitting can, with advantage be performed in a half-seated position.
When in the standing position, the body is supported by two points of support, namely the feet, whereas in the half-seated position the weight of the body is supported at three points, viz. both feet and the buttocks, the major part of the weight is borne by the seat of the piece of furniture on which the body rests and only a minor part of the weight is transferred to the floor by the feet.
The invention is concerned with the provision of a chair, stool or similar article (hereinafter referred to generically as a chair) which can be used -in the halfstanding position while giving the user full liberty of movement and without putting the user in a state of unbalance when moving from `one position to the other. Furthermore, the `chair affords security for the user by its stability.
Existing chairs of this general kind which provide for movement of the user in all directions do not provide this stability or the feeling of stable balance, because the user when assuming the half-seated position, has to be careful not to displace the chair too far from the vertical position, as this could lead to overturning of the chair.
The chair in accordance with the invention is designed so as to enable the user, when in the half-seated position, to move sideways and forwardly with the feeling that he will always retain a completely stable position within wide limits.
This is achieved by supporting the seat on a column which is connected to a foot by means of a ball and socket or universal joint, but the movement of which relatively to the foot is limited by a ring which ensures that a vertical line passing through the central point of the seat always falls within the limits of the foot.
Preferably, the ring is shaped so that the user in the half-seated position can move himself forwardly, to the left and to the right but not backwardly. To achieve this purpuose, the ring can have the shape of a sector of a circle.
The foot preferably has four toes disposed similarly to the toes of a fowl, i.e. one toe extending backwardly, one forwardly and the remaining two at angles of about 60 to the forwardly extending toe.
A spring can usefully be provided which biasses the seat column towards its vertical position.
An example of a chair in accordance with the invention is shown in the accompanying drawings, in which- FIGURE 1 shows the chair in sectional elevation; and
3,053,496 Patented Sept. 1l, 1962 FIGURE 2 is a sectional plan taken on the line II-II in FIGURE 1.
The chair shown in the drawings has a foot having four toes 1-2-3--4 The toe 4 extends backwards; the toe 2 extends forwards in line with the toe 4; and the toes 1 and 3 extend forwards and sideways at an angle of about 60 to the toe 2. Between these toes, there is a two-part leg 5, the lower part 6 being connected to the upper part 8 by a universal or ball and socket joint 7 so that the seat 9' xed to the upper part can be displaced `within limits over the surface of a sphere centered at the joint 7.
To limit the movement of the seat, a ring y10 is provided which surrounds the column 5 and is shaped and disposed so that the upper part of the column can be moved out of its vertical position forwardly and sideways but not backwards. As clearly seen in FIGURE 2, the ring has the shape of a sector of a circle and the upper part 8 of the column, when in its vertical position, lies in the crutch of the sector. Thus, the upper part of the column cannot be moved backwards but has freedom of movement forwardly and sideways. A spring 11 is provided which urges the upper part of the column into line with the lower part so that the column always tends to assume a vertical position. The shape and the size of the ring 10 are such that a vertical line from the middle of the seat 9 always falls within the area described by the extremities of the toes 1-2-3-4, so that the chair always remains completely stable and gives a feeling of security to the user.
What is claimed is:
1. A chair comprising a base including a first pair of diametrically opposed toes and a second pair of toes defining therebetween an angle of less than the second pair of toes being symmetrically positioned relative to the first pair, seating means supported on said base for pivotal movement and a rigid ring rigidly supported on `said base and having a peripheral extent, said ring being operatively associated with said seating means to restrict the pivotal movement thereof in conformity with the peripheral extent of the ring, said ring including an arcuate portion having ends and a V-shaped portion `connected to said ends.
2. A chair as claimed in claim 1, wherein said V- shaped portion includes `a pair of legs, said legs being parallel to said second pair of toes.
3. A chair as claimed in claim l, wherein said seating means includes a shaft supported for pivotal movement on said base and a seat on said shaft, said ring surrounding said shaft, the chair `further comprising spring means coupled to said shaft and to said base for elastically resisting pivotal movement of said shaft relative to the base.
References Cited in the file of this patent UNITED STATES PATENTS 239,970 Medart Apr. 12, 1881 612,580 Barnes Oct. 18, 1898 659,089 McKinney Oct. 2, 1900 1,070,278 McKinney Aug. 12, 1913 1,194,551 Schosser Aug. 15, 1916 1,711,526 Forsyth May 7, 1929 FOREIGN PATENTS 700,645 Great Britain Dec. 9. 1953
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB18109/60A GB912330A (en) | 1959-06-19 | 1960-05-23 | Improvements in and relating to chairs |
CH629560A CH384801A (en) | 1959-06-19 | 1960-06-02 | Seating furniture with a swiveling seat |
BE591835A BE591835A (en) | 1959-06-19 | 1960-06-13 | Furniture or seat allowing the user to occupy an intermediate position between the sitting position and the standing position |
FR830111A FR1260921A (en) | 1959-06-19 | 1960-06-15 | Furniture or seat allowing the user to occupy an intermediate position between the sitting position and the standing position |
US45221A US3053496A (en) | 1959-06-19 | 1960-07-25 | Spring biased chair seat |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL240381 | 1959-06-19 | ||
US45221A US3053496A (en) | 1959-06-19 | 1960-07-25 | Spring biased chair seat |
Publications (1)
Publication Number | Publication Date |
---|---|
US3053496A true US3053496A (en) | 1962-09-11 |
Family
ID=42941378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US45221A Expired - Lifetime US3053496A (en) | 1959-06-19 | 1960-07-25 | Spring biased chair seat |
Country Status (5)
Country | Link |
---|---|
US (1) | US3053496A (en) |
BE (1) | BE591835A (en) |
CH (1) | CH384801A (en) |
FR (1) | FR1260921A (en) |
GB (1) | GB912330A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9345332B2 (en) * | 2012-02-21 | 2016-05-24 | Human Plus S.C. | Dual functional chair |
US20220240681A1 (en) * | 2019-06-10 | 2022-08-04 | Inventor Group Gmbh | Tiltable Stool |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1273147B (en) * | 1964-07-07 | 1968-07-18 | Gottfried Saft | Standing work seat |
DE2837618C2 (en) * | 1978-08-29 | 1983-06-01 | F. Biedermann Gmbh & Co Kg, 7450 Hechingen | Standing support device |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US239970A (en) * | 1881-04-12 | Balance-swing | ||
US612580A (en) * | 1898-10-18 | Chair | ||
US659089A (en) * | 1900-02-03 | 1900-10-02 | George Bester Mckinney | Stool. |
US1070278A (en) * | 1912-05-29 | 1913-08-12 | George Bester Mckinney | Stool. |
US1194551A (en) * | 1916-08-15 | Assiotob | ||
US1711526A (en) * | 1926-08-23 | 1929-05-07 | Benjamin F Forsyth | Adjustable seat |
GB700645A (en) * | 1951-09-05 | 1953-12-09 | Samuel Victor Poultney | Improvements in the spring suspension of seats of chairs, stools and the like |
-
1960
- 1960-05-23 GB GB18109/60A patent/GB912330A/en not_active Expired
- 1960-06-02 CH CH629560A patent/CH384801A/en unknown
- 1960-06-13 BE BE591835A patent/BE591835A/en unknown
- 1960-06-15 FR FR830111A patent/FR1260921A/en not_active Expired
- 1960-07-25 US US45221A patent/US3053496A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US239970A (en) * | 1881-04-12 | Balance-swing | ||
US612580A (en) * | 1898-10-18 | Chair | ||
US1194551A (en) * | 1916-08-15 | Assiotob | ||
US659089A (en) * | 1900-02-03 | 1900-10-02 | George Bester Mckinney | Stool. |
US1070278A (en) * | 1912-05-29 | 1913-08-12 | George Bester Mckinney | Stool. |
US1711526A (en) * | 1926-08-23 | 1929-05-07 | Benjamin F Forsyth | Adjustable seat |
GB700645A (en) * | 1951-09-05 | 1953-12-09 | Samuel Victor Poultney | Improvements in the spring suspension of seats of chairs, stools and the like |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9345332B2 (en) * | 2012-02-21 | 2016-05-24 | Human Plus S.C. | Dual functional chair |
US20220240681A1 (en) * | 2019-06-10 | 2022-08-04 | Inventor Group Gmbh | Tiltable Stool |
Also Published As
Publication number | Publication date |
---|---|
FR1260921A (en) | 1961-05-12 |
CH384801A (en) | 1965-02-26 |
GB912330A (en) | 1962-12-05 |
BE591835A (en) | 1960-10-03 |
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