Patent US4393529A successfully refreshed from Google Patents.
US4393529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Invalid chair
Assignee: MODERN HEALTHCARE CONCEPTS Inc
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Filing: 1980-09-24
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Granted: 1983-07-19
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Expires: 2000-09-24
Abstract
Abstract A two-part invalid chair is disclosed which enables a patient to be easily transferred from a lying position on a bed to a seated position on a chair, or vice versa. The first part of the chair consists of an elongated, tubular frame within which a body supporting web is suspended. The second part of the chair consist of troughs mounted to a support base, each having a semi-circular cross section which conforms to the shape of the tubular frame of the first part of the chair. This enables the frame to be readily mounted to or removed from the base portion. Both the tubular frame and the base portion are articulated at hinged joints to enable the patient, while seated in a chair, to assume a variety of body inclinations. The frame can be removed from the base with the patient seated therein and can be readily transferrred to a bed where the frame can unfold to a completely flat position enabling the easy transfer of the patient to the bed. Several embodiments are disclosed having features which complement the basic function of the invalid chair.
Inventors
- 👤 Elizabeth Britz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:07
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/05; A61G7/053; A61G5/00; A61G5/10; A61G5/1091; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
448 words
A two-part invalid chair, comprising: an elongated, tubular frame having an open inner area bounded by a U-shaped, tubular, head-supporting portion on a first end and a U-shaped, tubular, foot-supporting portion on a second end with a first leg of said head portion connected to a first end of a first tubular, flank-supporting portion whose second end is connected to a first leg of said foot-supporting portion and with a second leg of said head portion connected to a first end of a second, tubular, flank-supporting portion whose second end is connected to a second leg of said foot-supporting portion; a body supporting web suspended in said open inner area of said frame and mounted to said U-shaped head-supporting portion, said flank-supporting portions and said U-shaped foot-supporting portion; a first horizontal trough mounted to a support base, having a semi-circular cross section which conforms to the shape of said first tubular, flank-supporting portion of said frame and a second horizontal trough mounted to said support base, having a semi-circular cross section which conforms to the shape of said second tubular, flank-supporting portion of said frame, for removably mounting said flank-supporting portions to said support base; said first and second flank-supporting portions of said frame being in a substantially, mutually parallel relationship at a predetermined separation distance; said first and second horizontal troughs being mounted to said support base in a substantially, mutually parallel relationship at said predetermined separation distance for removably mounting said respective flank-supporting portions thereto; a first clamp mounted to said first horizontal trough of said base, for clamping said first flank-supporting portion of said frame thereto; a second clamp mounted to said second horizontal trough of said base, for clamping said second flank-supporting portion of said frame thereto; a first upper trough mounted to a first end of said first horizontal trough, having a semi-circular cross section which conforms to the shape of said first leg of said U-shaped, tubular, head-supporting portion of said frame and a second upper trough mounted to a first end of said second horizontal trough, having a semi-circular cross section which conforms to the shape of said second leg of said U-shaped, tubular, head-supporting portion of said frame, for removably mounting said head-supporting portion thereto; said first and second upper troughs being mounted to said respective first and second horizontal troughs in a mutually spaced relationship for removably mounting the tubular contours of said respective first and second legs of said head-supporting portion of said frame into said semi-circular contours of said respective upper troughs; a first clamp mounted to said first upper trough of said base, for clamping said first leg of said head-supporting portion of said frame thereto;
Claim 2
Dependent Claim
448 words
A two-part invalid chair, comprising: an elongated, tubular frame having an open inner area bounded by a U-shaped, tubular, head-supporting portion on a first end and a U-shaped, tubular, foot-supporting portion on a second end with a first leg of said head portion connected to a first end of a first tubular, flank-supporting portion whose second end is connected to a first leg of said foot-supporting portion and with a second leg of said head portion connected to a first end of a second, tubular, flank-supporting portion whose second end is connected to a second leg of said foot-supporting portion; a body supporting web suspended in said open inner area of said frame and mounted to said U-shaped head-supporting portion, said flank-supporting portions and said U-shaped foot-supporting portion; a first horizontal trough mounted to a support base, having a semi-circular cross section which conforms to the shape of said first tubular, flank-supporting portion of said frame and a second horizontal trough mounted to said support base, having a semi-circular cross section which conforms to the shape of said second tubular, flank-supporting portion of said frame, for removably mounting said flank-supporting portions to said support base; said first and second flank-supporting portions of said frame being in a substantially, mutually parallel relationship at a predetermined separation distance; said first and second horizontal troughs being mounted to said support base in a substantially, mutually parallel relationship at said predetermined separation distance for removably mounting said respective flank-supporting portions thereto; a first clamp mounted to said first horizontal trough of said base, for clamping said first flank-supporting portion of said frame thereto; a second clamp mounted to said second horizontal trough of said base, for clamping said second flank-supporting portion of said frame thereto; a first upper trough mounted to a first end of said first horizontal trough, having a semi-circular cross section which conforms to the shape of said first leg of said U-shaped, tubular, head-supporting portion of said frame and a second upper trough mounted to a first end of said second horizontal trough, having a semi-circular cross section which conforms to the shape of said second leg of said U-shaped, tubular, head-supporting portion of said frame, for removably mounting said head-supporting portion thereto; said first and second upper troughs being mounted to said respective first and second horizontal troughs in a mutually spaced relationship for removably mounting the tubular contours of said respective first and second legs of said head-supporting portion of said frame into said semi-circular contours of said respective upper troughs; a first clamp mounted to said first upper trough of said base, for clamping said first leg of said head-supporting portion of said frame thereto;
Claim 3
Dependent Claim
294 words
a second clamp mounted to said second upper trough of said base, for clamping said second leg of said head-supporting portion of said frame thereto; said first leg of said U-shaped head-supporting portion of said frame being hingedly mounted to said first end of said first flank-supporting portion and said second leg of said U-shaped head-supporting portion of said frame being hingedly mounted to said first end of said second flank-supporting portion; said first upper trough of said base being hingedly mounted to said first end of said first horizontal trough and said second upper trough of said base being hingedly mounted to said first end of said second horizontal trough; a first lower trough mounted to a second end of said first horizontal trough, having a semi-circular cross section which conforms to the shape of said first leg of said U-shaped, tubular, foot-supporting portion of said frame and a second lower trough mounted to a second end of said second horizontal trough, having a semi-circular cross section which conforms to the shape of said second leg of said U-shaped, tubular, foot-supporting portion of said frame, for removably mounting said foot-supporting portion thereto; said first and second lower troughs being mounted to said respective first and second horizontal troughs in a mutually spaced relationship for removably mounting the tubular contours of said respective first and second legs of said foot-supporting portion of said frame into said semi-circular contours of said respective lower troughs; a first clamp mounted to said first lower trough of said base, for clamping said first leg of said foot-supporting portion of said frame thereto; and a second clamp mounted to said second lower trough of said base, for clamping said second leg of said foot-supporting portion of said frame thereto.
Claim 4
Dependent Claim
294 words
a second clamp mounted to said second upper trough of said base, for clamping said second leg of said head-supporting portion of said frame thereto; said first leg of said U-shaped head-supporting portion of said frame being hingedly mounted to said first end of said first flank-supporting portion and said second leg of said U-shaped head-supporting portion of said frame being hingedly mounted to said first end of said second flank-supporting portion; said first upper trough of said base being hingedly mounted to said first end of said first horizontal trough and said second upper trough of said base being hingedly mounted to said first end of said second horizontal trough; a first lower trough mounted to a second end of said first horizontal trough, having a semi-circular cross section which conforms to the shape of said first leg of said U-shaped, tubular, foot-supporting portion of said frame and a second lower trough mounted to a second end of said second horizontal trough, having a semi-circular cross section which conforms to the shape of said second leg of said U-shaped, tubular, foot-supporting portion of said frame, for removably mounting said foot-supporting portion thereto; said first and second lower troughs being mounted to said respective first and second horizontal troughs in a mutually spaced relationship for removably mounting the tubular contours of said respective first and second legs of said foot-supporting portion of said frame into said semi-circular contours of said respective lower troughs; a first clamp mounted to said first lower trough of said base, for clamping said first leg of said foot-supporting portion of said frame thereto; and a second clamp mounted to said second lower trough of said base, for clamping said second leg of said foot-supporting portion of said frame thereto.
Claim 5
Dependent Claim
66 words
The apparatus of claim 1, which further comprises: a first adjustable armrest mounted to said support base proximate to said first horizontal trough; a second adjustable armrest mounted to said support base proximate to said second horizontal trough; whereby said first and second armrests can be positioned out of the vicinity of said frame when it is to be attached to or removed from said base.
Claim 6
Dependent Claim
56 words
The apparatus of claim 1, which further comprises: said support base having an opening on its rearward side, for selectively positioning said flank-supporting portions of said frame over a toilet bowl; said body-supporting web having an apperture therethrough between said first and second flank-supporting portions; whereby said aperture can be selectively juxtaposed over said toilet bowl.
Claim 7
Dependent Claim
70 words
The apparatus of claim 1, which further comprises: elevator means mounted on said support base and supporting said first and second horizontal troughs, for selectively elevating said frame with respect to said base; whereby the height of said frame can be adjusted to equal the height of a bed to enable said frame to be laterally displaced from said base to said bed or from said bed to said base.
Claim 8
Dependent Claim
41 words
The apparatus of claim 4, which further comprises: a cross brace mounted between said first and second horizontal troughs, forming a track over which said tubular frame can laterally slide to transfer said frame from said support base to said bed.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |