US3710404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric hospital bed
Assignee: JOERNS FURNITURE COMPANY Inc
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Filing: 1971-04-15
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Granted: 1973-01-16
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Expires: 1991-04-15
Abstract
Abstract Electric hospital bed with articulated spring having Hi-Lo, head and knee function drive means with respective manually operable control members selectively movable from neutral in either of two directions and a normally neutral control unit operable in response to each control member first to move a gear selector to effect driving connection for the selected bed function and thereafter to close one or the other of two switches to initiate motor operation for either up or down bed function movements, with means operable automatically upon release of an actuated head or knee control member to return the parts manually operated thereby to neutral position and ''''NO-WAIT'''' means for latching the Hi-Lo control member and parts manually actuated thereby in operative position following manual actuation and release and automatically operable in response to movement of the bed into its highest or lowest positions to return the Hi-Lo member and mechanisms actuated thereby to neutral positions, and simplified lockout means for selectively preventing operation of the head or knee control members, together with simplified Trendelenberg control means.
Inventors
- 👤 W Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:31
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/006; A61G7/00; A61G7/002
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
159 words
In an electric hospital bed having an articulated spring with separately operable head and knee sections, independently operable actuating means for raising and lowering said spring and said head and knee sections, and a reversible motor for operating said actuating means to effect Hi-Lo, head or knee section functions; transmission means interposed between said motor and said actuating means selectively positionable to determine Hi-Lo, head or knee functions, switch means normally in neutral position and movable in either of two directions therefrom to cause energization of said motor for forward or reverse operation, a normally neutral control unit, and a control member for each of said Hi-Lo, head and knee functions selectively operable manually in either of two directions first to position said transmission means to determine the selected function and thereafter to move said switch means in a corresponding direction to effect the selected raising or lowering of said spring or said head section or said knee section.
Claim 2
Dependent Claim
159 words
In an electric hospital bed having an articulated spring with separately operable head and knee sections, independently operable actuating means for raising and lowering said spring and said head and knee sections, and a reversible motor for operating said actuating means to effect Hi-Lo, head or knee section functions; transmission means interposed between said motor and said actuating means selectively positionable to determine Hi-Lo, head or knee functions, switch means normally in neutral position and movable in either of two directions therefrom to cause energization of said motor for forward or reverse operation, a normally neutral control unit, and a control member for each of said Hi-Lo, head and knee functions selectively operable manually in either of two directions first to position said transmission means to determine the selected function and thereafter to move said switch means in a corresponding direction to effect the selected raising or lowering of said spring or said head section or said knee section.
Claim 3
Dependent Claim
67 words
An electric hospital bed according to claim 1, wherein said control unit comprises a selector movable to one of three positions to selectively position said transmission means, and three pivotally mounted function selector arms each operable by one of said manually operable control members to move Said selector to the proper position regardless of which direction of movement has been imparted to the selectively operated control member.
Claim 4
Dependent Claim
22 words
An electric hospital bed according to claim 2, wherein said gear selector comprises a shuttle plate slidable to one of three positions.
Claim 5
Dependent Claim
28 words
An electric hospital bed according to claim 3, wherein each said function selector arm is engageable with said shuttle plate at two points spaced equidistantly from its pivot.
Claim 6
Dependent Claim
31 words
An electric bed according to claim 3, wherein one of said three positions of said shuttle plate comprises a neutral position, and spring means constraining said plate to said neutral position.
Claim 7
Dependent Claim
37 words
In an electric bed according to claim 1, wherein said control members have normal neutral positions, means for automatically returning a manually operated said head or knee function control member to neutral position upon manual release thereof.
Claim 8
Dependent Claim
26 words
An electric bed according to claim 2, wherein the final portion of manual movement of any one of said function selector arms actuates said switch means.
Claim 9
Dependent Claim
42 words
In an electric bed according to claim 6, latching means operable in response to movement of said Hi-Lo control member for retaining the same, said switch means and said control unit in operative positions upon manual release of said Hi-Lo control member.
Claim 10
Dependent Claim
45 words
In an electric bed according to claim 8, means automatically operable when said bed reaches its uppermost or lowermost position to render said latching means ineffective and thereby effect return of said Hi-Lo control member, said control unit and said switch means to neutral positions.
Claim 11
Dependent Claim
58 words
An electric bed according to claim 9, wherein said latching means comprises a stationary plate, a movable plate slidably mounted on said stationary plate for limited movement by said Hi-Lo control member, and normally ineffective resilient detent means rendered effective upon sliding of said movable plate in either direction in response to operation of said Hi-Lo control member.
Claim 12
Dependent Claim
27 words
In an electric bed according to claim 10, a spring cooperating with said stationary and movable plates to resiliently maintain the latter in a normal central position.
Claim 13
Dependent Claim
77 words
In an electric bed according to claim 6, wherein said control members are disposed adjacent the foot end of the bed, duplicate head and knee control members located for convenient operation by a patient on the bed and interconnected, respectively, with said head and knee control members at the foot of the bed, and lockout means disposed adjacent the latter and selectively operable to render inoperative the associated said head and knee control and duplicate control members.
Claim 14
Dependent Claim
37 words
A hospital bed according to claim 12, wherein each said lockout means comprises a normally inoperative pivotally mounted lever having an edge notch engageable with the associated said control member in response to movement to operative position.
Claim 15
Dependent Claim
119 words
In an electric bed according to claim 9, normally ineffective Trendelenberg restraining means mounted at one end of said bed, control means selectively operable to render said restraining means effective upon raising of said bed to its uppermost position, whereby subsequent operation of said Hi-Lo control member to effect downward movement of said bed and manual release thereof will result in downward movement of the opposite end of said bed and automatic stopping thereof in its lowermost position, and means operable automatically to return said restraining means to ineffective position upon subsequent raising of said bed to uppermost position in response to operation of said Hi-Lo control member to effect upward movement of said bed and manual release thereof.
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |