US 4,729,598 AGranted

Patient chair system

OwnerJack H. Hessinventor

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Abstract

A convalescent chair for hospital and nursing home patients and the like including a chair structure forming a back rest, arm rests and shoulder and head support for patients. A seat support structure is pivotally connected to the forward portion of the chair structure and is elevated by a motorized jack from a substantially horizontal position to an inclined position to assist in raising a patient from the seated position to the standing position. A plurality of air sacs and a therapy pad are supported by the seat support structure and are supplied filtered and cooled air to provide sufficient air flow for inflation of the air sacs and for effective discharge of air from the upper portion of the air sacs. An air distribution conduit extending from a blower to an air supply manifold in assembly with the seat support structure forms a heat exchanger portion so that air being drawn through an internal chamber of the chair by an exhaust fan imparts cooling to air flowing through the air distribution conduit.

Claims18

Dependent claims

A convalescent chair for hospital and nursing home patients and the like, comprising:

(a) a chair structure forming a back rest, arm rests and shoulder and head supports for patients, said chair further forming seat support means and forming an enclosure therein and an air inlet opening for said enclosure communicating said enclosure with environmental air;
(b) a plurality of air sacs being secured in side by side relation to said seat support means and having multiple air vent holes formed in the upper surfaces thereof;
(c) means communicating pressurized air into said air sacs to inflate the same and to provide a sufficient flow of air into said air sacs to compensate for discharge of air from said multiple holes;
(d) means for exhausting air from said enclosure and stimulating air flow through said air inlet opening of said enclosure;
(e) electrically energized air blower means located within said enclosure and forming air intake and discharge openings;
and
(f) an elongated heat exchanger conduit interconnecting said discharge opening of said electrically energized air blower means with said plurality of air sacs for supply of pressurized air to said air sacs, said elongated heat exchanger conduit being so located within said enclosure that air being drawn through said air inlet opening of said enclosure by said air exhausting means and said electrically energized air blower means is passed over said elongated heat exchanger conduit for cooling air being being discharged from said air blower.

4 more elements

A convalescent chair for hospital and nursing home patients and the like, comprising:

(a) a chair structure forming a back rest, arm rests and shoulder supports for patients and forming an enclosure therein and an air inlet opening for said enclosure communicating said enclosure with environmental air;
(b) a seat support structure being pivotally connected to the front portion of said chair structure;
(c) a motorized jack mechanism being located within said chair structure and being operative to impart pivotal movement to said seat support from a substantially horizontal position to an inclined position;
(d) a plurality of air sacs being mounted in side-by-side relation on said seat support, said air sacs each forming curved perforate upper surfaces for air distribution beneath a patient;
(e) means for exhausting air from said enclosure and stimulating air flow through said air inlet opening of said enclosure;
(f) electrically energized air blower means located within said enclosure and forming air intake and discharge openings;
and
(g) an elongated heat exchanger conduit interconnecting said discharge opening of said electrically energized air blower means with said plurality of air sacs for supply of pressurized air to said air sacs, said elongated heat exchanger conduit being so located within said enclosure that air being drawn through said air inlet opening of said enclosure by said air exhausting means and said electrically energized air blower means is passed over said elongated heat exchanger conduit for cooling air being discharged from said air blower.

5 more elements

Dependencies are inferred from the claim text.