US5597203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seat with biomechanical articulation
Assignee: Michigan State University
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Filing: 1994-06-14
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Granted: 1997-01-28
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Expires: 2014-06-14
Abstract
Abstract A seat with biomechanical articulation for a person seated in the seat includes a seat portion extending generally horizontally, a back portion extending generally upwardly from the seat portion, a frame interconnecting the seat portion and the back portion, the seat portion having a seat member pivotally connected to the frame, and a structure for supporting a pelvis of a person seated on the seat member and moving in response to movement of the seat member by the person seated in the seat. The frame may be replaced by the frame of an existing seat such as a wheelchair frame.
Inventors
- 👤 Robert P. Hubbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:55
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/024; A47C1/00; A47C1/02; A47C1/022; A47C7/36; A47C7/40; A47C7/405
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
130 words
A seat with biomechanical articulation for a person seated in the seat comprising: a seat portion extending generally horizontally; a back portion extending generally upwardly from said seat portion; a frame interconnecting said seat portion and said back portion; said seat portion having a seat member pivotally connected to said frame and thigh means pivotally connected to said seat member for supporting thighs of a person seated on said seat member and rotating relative to said seat member in response to movement of said seat member by the person seated in said seat; and pelvis means connected to said seat member for supporting a pelvis of a person seated on said seat member and moving in response to movement of said seat member by the person seated in said seat.
Claim 2
Dependent Claim
130 words
A seat with biomechanical articulation for a person seated in the seat comprising: a seat portion extending generally horizontally; a back portion extending generally upwardly from said seat portion; a frame interconnecting said seat portion and said back portion; said seat portion having a seat member pivotally connected to said frame and thigh means pivotally connected to said seat member for supporting thighs of a person seated on said seat member and rotating relative to said seat member in response to movement of said seat member by the person seated in said seat; and pelvis means connected to said seat member for supporting a pelvis of a person seated on said seat member and moving in response to movement of said seat member by the person seated in said seat.
Claim 3
Dependent Claim
21 words
A seat as set forth in claim 1 wherein said pelvis means comprises a pelvis support connected to said seat member.
Claim 4
Dependent Claim
26 words
A seat as set forth in claim 2 wherein said pelvis means further comprises a support member connected to said seat member and said pelvis support.
Claim 5
Dependent Claim
32 words
A seat as set forth in claim 1 wherein said back portion includes a torso support pivotally connected to said frame for supporting a torso of the person seated in said seat.
Claim 6
Dependent Claim
21 words
A seat as set forth in claim 1 including compliant support means for urging said pelvis means toward said back portion.
Claim 7
Dependent Claim
19 words
A seat as set forth in claim 5 wherein said compliant support means comprises at least one elastic member.
Claim 8
Dependent Claim
24 words
A seat as set forth in claim 1 wherein said thigh means comprises at least one thigh support pivotally connected to said seat member.
Claim 9
Dependent Claim
25 words
A seat as set forth in claim 7 including a stop portion for supporting said at least one thigh support and limiting downward movement thereof.
Claim 10
Dependent Claim
31 words
A seat as set forth in claim 8 wherein said stop portion includes a second support member connected to said frame and a stop member extending from said second support member.
Claim 11
Dependent Claim
23 words
A seat as set forth in claim 9 including means for adjusting a height of said stop member relative to said support member.
Claim 12
Dependent Claim
167 words
A seat with biomechanical articulation for a person seated in the seat comprising: a frame including a pair of laterally spaced side members; a seat portion having a seat member pivotally connected to said frame and extending generally horizontally and at least one thigh support pivotally connected to said seat member for supporting thighs of a person seated on said seat member and rotating relative to said seat member in response to movement of said seat member by the person seated in said seat; a torso support disposed between said side members and pivotally connected to said side members for supporting a torso of a person seated in said seat; and a pelvis support disposed below said torso support between said side members and support members interconnecting said pelvis support and said seat portion, said pelvis support supporting a pelvis of a person seated in said seat and rotating about an axis relative to said frame in response to movement of the seated person in said seat.
Claim 13
Dependent Claim
167 words
A seat with biomechanical articulation for a person seated in the seat comprising: a frame including a pair of laterally spaced side members; a seat portion having a seat member pivotally connected to said frame and extending generally horizontally and at least one thigh support pivotally connected to said seat member for supporting thighs of a person seated on said seat member and rotating relative to said seat member in response to movement of said seat member by the person seated in said seat; a torso support disposed between said side members and pivotally connected to said side members for supporting a torso of a person seated in said seat; and a pelvis support disposed below said torso support between said side members and support members interconnecting said pelvis support and said seat portion, said pelvis support supporting a pelvis of a person seated in said seat and rotating about an axis relative to said frame in response to movement of the seated person in said seat.
Claim 14
Dependent Claim
26 words
A seat as set forth in claim 11 including means for pivotally connecting said torso support to said side members and defining a torso pivot axis.
Claim 15
Dependent Claim
23 words
A seat as set forth in claim 11 including at least one compliant member for urging said pelvis support toward said torso support.
Claim 16
Dependent Claim
21 words
A seat as set forth in claim 11 wherein said seat portion comprises a seat member connected to said support members.
Claim 17
Dependent Claim
25 words
A seat as set forth in claim 11 including a stop portion for supporting said at least one thigh support and limiting downward movement thereof.
Claim 18
Dependent Claim
31 words
A seat as set forth in claim 15 wherein said stop portion includes a second support member connected to said frame and a stop member extending from said second support member.
Claim 19
Dependent Claim
24 words
A seat as set forth in claim 16 including means for adjusting a height of said stop member relative to said second support member.
Claim 20
Dependent Claim
171 words
A seat with biomechanical articulation for a person seated in the seat comprising: a frame; a seat member pivotally connected to said frame; a torso support pivotally connected to said frame and disposed above said seat member for supporting a torso of a person seated in said seat; a pelvis support disposed below said torso support and support members interconnecting said pelvis support and said seat member, said pelvis support supporting a pelvis of a person seated on said seat member and rotating about an axis relative to said frame in response to movement of the person seated in said seat; a pair of thigh supports pivotally connected to said seat member for supporting thighs of a person seated on said seat member and rotating relative to said seat member in response to movement of said seat member by the person seated in said seat member to allow independent movement of the thighs relative to each other; and a stop portion for supporting said thigh supports and limiting downward movement thereof.
Claim 21
Dependent Claim
171 words
A seat with biomechanical articulation for a person seated in the seat comprising: a frame; a seat member pivotally connected to said frame; a torso support pivotally connected to said frame and disposed above said seat member for supporting a torso of a person seated in said seat; a pelvis support disposed below said torso support and support members interconnecting said pelvis support and said seat member, said pelvis support supporting a pelvis of a person seated on said seat member and rotating about an axis relative to said frame in response to movement of the person seated in said seat; a pair of thigh supports pivotally connected to said seat member for supporting thighs of a person seated on said seat member and rotating relative to said seat member in response to movement of said seat member by the person seated in said seat member to allow independent movement of the thighs relative to each other; and a stop portion for supporting said thigh supports and limiting downward movement thereof.
Claim 22
Dependent Claim
143 words
A seat with biomechanical articulation for a person seated in the seat comprising: a seat portion extending generally horizontally; a back portion extending generally upwardly from said seat portion; a torso support connected to said back portion; a seat frame connected to said back portion and said seat portion; said seat portion having a seat member pivotally connected to said seat frame and thigh means pivotally connected to said seat member for supporting thighs of a person seated on said seat member and rotating relative to said seat member in response to movement of said seat member by the person seated in said seat; and a pelvis support connected to said seat frame for supporting a pelvis of a person seated on said seat portion and moving in response to movement of said seat portion by the person seated in said seat portion.
Claim 23
Dependent Claim
143 words
A seat with biomechanical articulation for a person seated in the seat comprising: a seat portion extending generally horizontally; a back portion extending generally upwardly from said seat portion; a torso support connected to said back portion; a seat frame connected to said back portion and said seat portion; said seat portion having a seat member pivotally connected to said seat frame and thigh means pivotally connected to said seat member for supporting thighs of a person seated on said seat member and rotating relative to said seat member in response to movement of said seat member by the person seated in said seat; and a pelvis support connected to said seat frame for supporting a pelvis of a person seated on said seat portion and moving in response to movement of said seat portion by the person seated in said seat portion.
References Cited (Backward Citations)
DE800488C
Cited
US3121592A
Cited
US3833257A
Cited
US3877750A
Cited
US3989297A
Cited
US4017118A
Cited
US4126355A
Cited
US4275714A
Cited
US4505513A
Cited
JPS5836732A
Cited
US4585272A
Cited
US4944554A
Cited
US4832401A
Cited
US4966413A
Cited
US5062676A
Cited
US5288130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-28 | 2000-07-29 | 2001-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-28 | 2004-07-29 | 2005-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-28 | 2008-07-29 | 2009-01-28 | $7700.00 | Window Closed / Lapsed |