Patent US3602537A successfully refreshed from Google Patents.
US3602537A
Expired / Lapsed
US
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Seat system with a backrest
Assignee: Individual
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Filing: 1969-01-23
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Granted: 1971-08-31
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Expires: 1989-01-23
Abstract
Abstract A seat system comprising a backrest, a seat, means adapted to pivot said seat about a horizontal axis positioned in a base, means to attach said backrest to the supporting element for said seat by means of a hinged connection, a base, a spring means, said backrest being connected with said base by at least one said spring means, and means to arrange said seat system so that, when a load acts upon said seat system, said means simultaneously produces in a stabilizing manner a forwardly directed compressive force on said backrest being adapted to the user, and a supporting force against the supporting element of said seat.
Inventors
- 👤 Gerdi Kerstholt
- 👤 Fritz Kerstholt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:35
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/10; A; A47; A47C; A47C1/00; A47C1/02; A47C1/031; A47C1/032; A47C1/03205; A47C1/03238; A47C1/03261; A47C1/03272; A47C1/03277; A47C1/03294; E; E04; E04H; E04H6/00; E04H6/02; E04H6/06
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
259 words
A seat system such as for school children to enforce a good sitting posture comprising a seat member; a backrest member; a base; a spring means; means connecting said backrest with said seat member; said spring means mounted to engage said backrest at the point of connection spaced from the point of contact between said seat member with said backrest; means to move said seat member and said backrest relative to each other independently from each other; said spring member connected with said base to provide a bearing force for the said seat and a forwardly directed stabilizing pressure upon the said backrest, when the seat is occupied; means to limit the movements of said seat member; means to adjust the spring tension of said spring means to the weight of the user; means to lock at least one point of support of said spring means at varying positions; means to lock the seat in varying positions; means to lock the backrest in varying positions; means to displace the seat member in a horizontal direction; means to displace the seat member in the vertical direction; a depository means laterally secured to the said seat member exposed for use independently of the respective angle of incidence of said seat member; and means to enable the occupier of the seat to maintain his back at all times in contact with the said backrest, independently of the position of said seat member, whereby an improper sitting posture will cause discomfort to the sitter and force him to adopt a correct sitting position.
Claim 2
Dependent Claim
259 words
A seat system such as for school children to enforce a good sitting posture comprising a seat member; a backrest member; a base; a spring means; means connecting said backrest with said seat member; said spring means mounted to engage said backrest at the point of connection spaced from the point of contact between said seat member with said backrest; means to move said seat member and said backrest relative to each other independently from each other; said spring member connected with said base to provide a bearing force for the said seat and a forwardly directed stabilizing pressure upon the said backrest, when the seat is occupied; means to limit the movements of said seat member; means to adjust the spring tension of said spring means to the weight of the user; means to lock at least one point of support of said spring means at varying positions; means to lock the seat in varying positions; means to lock the backrest in varying positions; means to displace the seat member in a horizontal direction; means to displace the seat member in the vertical direction; a depository means laterally secured to the said seat member exposed for use independently of the respective angle of incidence of said seat member; and means to enable the occupier of the seat to maintain his back at all times in contact with the said backrest, independently of the position of said seat member, whereby an improper sitting posture will cause discomfort to the sitter and force him to adopt a correct sitting position.
Claim 3
Dependent Claim
157 words
A seat system comprising a backrest member; a seat member; a base; a horizontal axis mounted in said base; means to pivot said seat member forwardly and rearwardly abut said axis; means connecting said backrest with said seat member; at least one spring means; said spring means mounted to engage the said backrest at a point of connection spaced from the point of contact between said seat member and said backrest; said means to pivot and said spring means arranged to move said seat member and said backrest relative to each other; said backrest being connected with said base by said spring means; said means connecting said base with said seat member in such a manner that, when a load acts upon said seat member, said spring means simultaneously produces a stabilizing forwardly directed compressive force on said backrest To adapt it to the position of the user and a bearing force against the said seat member.
Claim 4
Dependent Claim
157 words
A seat system comprising a backrest member; a seat member; a base; a horizontal axis mounted in said base; means to pivot said seat member forwardly and rearwardly abut said axis; means connecting said backrest with said seat member; at least one spring means; said spring means mounted to engage the said backrest at a point of connection spaced from the point of contact between said seat member and said backrest; said means to pivot and said spring means arranged to move said seat member and said backrest relative to each other; said backrest being connected with said base by said spring means; said means connecting said base with said seat member in such a manner that, when a load acts upon said seat member, said spring means simultaneously produces a stabilizing forwardly directed compressive force on said backrest To adapt it to the position of the user and a bearing force against the said seat member.
Claim 5
Dependent Claim
18 words
Seat system according to claim 1, characterized in that said spring means includes a telescopic shock absorber arrangement.
Claim 6
Dependent Claim
18 words
Seat system according to claim 1, characterized in that said spring means comprises at least one flat spring.
Claim 7
Dependent Claim
37 words
Seat system according to claim 1, characterized in that means are provided for varying the height of said seat and further means for adapting the action of said spring means to the different heights of said seat.
Claim 8
Dependent Claim
41 words
Seat system according to claim 1, characterized in that disposed ahead of said seat is a support being displaceable with respect to height and/or depth of said seat, and in that means are provided for locking said support in different positions.
Claim 9
Dependent Claim
67 words
Seat system according to claim 2, characterized in that the portion of said backrest coming into contact with the back of the user is variable in the relative position thereof with respect to said seat, in that means are provided for locking the same in the various positions, and in that said locking means are adapted to be rendered operative and/or inoperative by means of a handle.
Claim 10
Dependent Claim
44 words
Seat system according to claim 2, characterized in that a pair of rosette-type cover members with lateral serrations is coordinated to at least one of said butt straps and in that said butt strap is guided in a recess of one of said rosettes.
Claim 11
Dependent Claim
30 words
Seat system according to claim 2, characterized in that at least one of the points of application of said spring means is displaceable when a corresponding locking means is disengaged.
Claim 12
Dependent Claim
33 words
A seat system as claimed in claim 1, said point of connection of said spring means with said backrest being spaced below said point of contact of said seat member with said backrest.
Claim 13
Dependent Claim
33 words
A seat system as claimed in claim 1, said point of connection of said spring means with said backrest being spaced above said point of contact of said seat member with said backrest.
Claim 14
Dependent Claim
21 words
A seat system as claimed in claim 1, said means to connect said backrest with said seat member being hinge means.
Claim 15
Dependent Claim
21 words
A seat system as claimed in claim 1, said backrest member including an extension thereof with which said spring means engage.
Claim 16
Dependent Claim
22 words
Seat system according to claim 1, characterized in that means are provided for locking said seat and/or said backrest in different positions.
Claim 17
Dependent Claim
18 words
Seat system according to claim 7, characterized in that said means are butt straps being provided with apertures.
Claim 18
Dependent Claim
31 words
Seat system according to claim 15, characterized in that at least one of said butt straps additionally comprises a tooth construction into which a toothed locking member is adapted to engage.
Claim 19
Dependent Claim
32 words
Seat system according to claim 7, characterized in that at least two such means are simultaneously provided which are adapted to be rendered operative and inoperative by means of a common handle.
Claim 20
Dependent Claim
35 words
Seat system according to claim 9, characterized in that elastic means act upon said handle in such a manner that the locking means can be rendered inoperative only against the action of a spring force.
Claim 21
Dependent Claim
38 words
Seat system according to claim 7, characterized in that several of said means are simultaneously provide and are adapted to be rendered operative and inoperative by means of at least two handles preferably acting independently of each other.
Claim 22
Dependent Claim
18 words
Seat system according to claim 1, characterized in that said seat is positioned displaceably in the horizontal direction.
Claim 23
Dependent Claim
18 words
Seat system according to claim 13, characterized in that the supporting element for said seat is displaceably positioned.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |