US3620568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft crewseat
Assignee: Boeing Co
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Filing: 1969-06-26
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Granted: 1971-11-16
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Expires: 1989-06-26
Abstract
Abstract A seat structure which results in minimal movement between an occupant and the back of the seat when the seat is reclined. Members respectively extending from the seat back and a seat base are pivotally connected together by a pair of nonparallel links. Centerlines of the links intersect at a point essentially coincident with the pelvic point line of the occupant. An extensible link is connected to the seat base and the seat back for adjustably positioning the seat base and the seat back at a plurality of relative positions.
Inventors
- 👤 Elmore F Morrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:18
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/50; B60N2/504; A; A47; A47C; A47C1/00; A47C1/02; A47C3/00; A47C3/20; B60N2/02; B60N2/22; B60N2/23; B60N2/233; B60N2/506; B64; B64D; B64D11/00; B64D11/06; B64D11/0689
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
193 words
An adjustable seat structure for an occupant of a vehicle comprising: a seat base lying substantially in a first plane; a seat back lying substantially in a second plane transverse to said first plane and coinciding with said first plane at a line of intersection; and means connecting said seat base to said seat back including operative means for moving said seat base relative to said seat back and a hinge having first and second members integral respectively with said seat base and said seat back and means pivotally mounted to and extending between said first and second members including first and second links pivotally mounted to and extending between, said first and second members, said first and second links being angularly disposed such that imaginary extensions thereof intersect at a second line spaced from the line of intersection and parallel thereto, said second line being located above said seat base and forward of said seat back so as to be substantially coincident with the pelvic pivot line of the occupant when normally seated such that relative motion between said seat structure and the occupant is minimized as the seat structure is reclined.
Claim 2
Dependent Claim
193 words
An adjustable seat structure for an occupant of a vehicle comprising: a seat base lying substantially in a first plane; a seat back lying substantially in a second plane transverse to said first plane and coinciding with said first plane at a line of intersection; and means connecting said seat base to said seat back including operative means for moving said seat base relative to said seat back and a hinge having first and second members integral respectively with said seat base and said seat back and means pivotally mounted to and extending between said first and second members including first and second links pivotally mounted to and extending between, said first and second members, said first and second links being angularly disposed such that imaginary extensions thereof intersect at a second line spaced from the line of intersection and parallel thereto, said second line being located above said seat base and forward of said seat back so as to be substantially coincident with the pelvic pivot line of the occupant when normally seated such that relative motion between said seat structure and the occupant is minimized as the seat structure is reclined.
Claim 3
Dependent Claim
41 words
The seat structure of claim 1, in which said operative means includes a jack pivotally mounted to said seat back and said first member for selectively moving said seat base and said seat back to a plurality of different relative positions.
Claim 4
Dependent Claim
16 words
The seat structure of claim 2, in which said first and second memberS are arcuately shaped.
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |