Patent US3840910A successfully refreshed from Google Patents.
US3840910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control mechanism for electrically operable bed
Assignee: Joerns Healthcare Inc
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Filing: 1973-03-16
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Granted: 1974-10-15
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Expires: 1993-03-16
Abstract
Abstract An electrically operable bed having a horizontal frame and an articulated spring supported by the frame which has pivotably mounted head, knee, and foot sections. Actuating means are mounted on the frame for effecting desired movement of the spring, including head section drive means and knee section drive means, the drive means being operated by a reversible electric motor via transmission means. A limiting means is associated with at least one of the drive means for limiting the degree of movement of the spring section movable thereby to a predetermined degree of movement.
Inventors
- 👤 F Damico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:35
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/002; A61G7/015
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
210 words
In an electrically operable bed having a horizontal frame; an articulated spring supported by said frame having at least one adjustable section; electrically operable actuating means mounted on said frame for effecting desired movements of said spring section, including drive means for moving said section relative to said frame; a reversible electric motor mounted on said frame, and transmission means mounted on said frame for selectively operating said drive means by said motor; the improvement which comprises: limiting means operably associated with said drive means for limiting the degree of movement of the spring section movable by said drive means to a predetermined degree of movement, said predetermined degree of movement being less than the full raising movement obtainable by said electrically operable actuating means; and wherein said electrically operable actuating means includes a first control means accessible to an occupant of said bed and being operably connected to said limiting means whereby said first control means is operable by an occupant of said bed to selectively operate said drive means only to the extent permitted by said limiting means; and a second control means positioned on said bed remote from said occupant to selectively operate said drive means to the full raising movement obtainable independently of said limiting means.
Claim 2
Dependent Claim
210 words
In an electrically operable bed having a horizontal frame; an articulated spring supported by said frame having at least one adjustable section; electrically operable actuating means mounted on said frame for effecting desired movements of said spring section, including drive means for moving said section relative to said frame; a reversible electric motor mounted on said frame, and transmission means mounted on said frame for selectively operating said drive means by said motor; the improvement which comprises: limiting means operably associated with said drive means for limiting the degree of movement of the spring section movable by said drive means to a predetermined degree of movement, said predetermined degree of movement being less than the full raising movement obtainable by said electrically operable actuating means; and wherein said electrically operable actuating means includes a first control means accessible to an occupant of said bed and being operably connected to said limiting means whereby said first control means is operable by an occupant of said bed to selectively operate said drive means only to the extent permitted by said limiting means; and a second control means positioned on said bed remote from said occupant to selectively operate said drive means to the full raising movement obtainable independently of said limiting means.
Claim 3
Dependent Claim
105 words
An electrical operable bed according to claim 1 wherein said first control means includes a first actuator push rod for selectively actuating said motor in opposite directions to selectively operate said drive means to raise and lower said spring section movable thereby, said first actuator rod being movable between a raising, a neutral, and a lowering position; said limiting means being actuatable by said drive means to urge said first actuator rod toward the neutral position and/or to restrain said first actuator rod from being positioned in the raising position when said spring section movable by said drive means is raised to said predetermined position.
Claim 4
Dependent Claim
62 words
An electrical operable bed according to claim 2 wherein said second control means includes a second actuator push rod, and said second rod is operable to override said limiting means whereby said second rod can be retained in the raising position after said predetermined raised position is reached to raisE said section movable by said drive means beyond said predetermined raised position.
Claim 5
Dependent Claim
100 words
An electrically operable bed according to claim 1 wherein said first control means includes a first actuator for selectively actuating said motor in opposite directions to selectively operate said drive means to raise and lower said spring section movable thereby, said first actuator being movable between a raising, a neutral, and a lowering position; said limiting means being actuatable by said drive means to urge said first actuator toward the neutral position and/or to restrain said first actuator from being positioned in the raising position when said spring section movable by said drive means is raised to a predetermined position.
Claim 6
Dependent Claim
60 words
An electrically operable bed according to claim 4 wherein said second control means includes a second actuator and said second actuator is operable to override said limiting means whereby said second actuator can be retained in the raising position after said perdetermined raised position is reached to raise said section movable by said drive means beyond said predetermined raised position.
Claim 7
Dependent Claim
186 words
An electrically operable bed according to claim 2 wherein said drive means includes a rotatable screw member and a nut member threadably engaged therewith, said screw member being rotatable by said motor via said transmission means to produce axial movement of said nut member in either axial direction and said nut member being connected to said spring section movable by said drive means by linkage means so that axial movement of said nut member in one direction raises said spring section movable by said drive means and axial movement of said nut member in the opposite direction lowers said spring section movable by said drive means; said limiting means comprising a cam actuator adjacent said nut means; and cam means on said frame positioned so that when said nut means is axially moved to an axial position where said spring section movable by said drive means is at said predetermined raised position, said cam actuator will move said cam means to urge said first actuator push rod toward the neutral position and/or to restrain said first actuator push rod from being positioned in the raising position.
Claim 8
Dependent Claim
118 words
An electrically operable bed according to claim 6 wherein said cam means comprises a cam plate and a stop plate; said cam plate and said stop plate each being pivotably mounted on said frame and positioned with respect to each other so that pivoting of either one of said plates causes the other of said plates to pivot; said cam plate having a cam ramp portion engageable by said cam actuator when said nut means is at said axial position to pivot said cam plate to cause said stop plate to pivot to urge said first actuator push rod toward the neutral position and/or to restrain said first actuator push rod from being positioned in the raising position.
Claim 9
Dependent Claim
186 words
An electrically operable bed according to claim 3 wherein said drive means includes a rotatable screw member and a nut member threadably engaged therewith, said screw member being rotatable by said motor via said transmission means to produce axial movement of said nut member in either axial direction and said nut member being connected to said spring section movable by said drive means by linkage means so that axial movement of said nut member in one direction raises said spring section movable by said drive means and axial movement of said nut member in the opposite direction lowers said spring section movable by said drive means; said limiting means comprising a cam actuator adjacent said nut means; and cam means on said frame positioned so that when said nut means is axially moved to an axial position where said spring section movable by said drive means is at said predetermined raised position, said cam actuator will move said cam means to urge said first actuator push rod toward the neutral position and/or to restrain said first actuator push rod from being positioned in the raising position.
Claim 10
Dependent Claim
118 words
An electrically operable bed according to claim 8 wherein said cam means comprises a cam plate and a stop plate; said cam plate and said stop plate each being pivotally mounted on said frame and positioned with respect to each other so that pivoting of either one of said plates causes the other of said plates to pivot; said cam plate having a cam ramp portion engageable by said cam actuator when said nut means is at said axial position to pivot said cam plate to cause said stop plate to pivot to urge said first actuator push rod toward the neutral position and/or to restrain said first actuator push rod from being positioned in the raising position.
Claim 11
Dependent Claim
97 words
An electrically operable bed according to claim 9 wherein said first and second actuator push rods are coupled to a common pivotally mounted rigid control bar, the pivotal movement of said control bar by either of said actuator push rods causing actuation of said motor, said first rod being resiliently coupled to said control bar so that said control bar can be pivoted by said second rod by being moved to the raising position of said second rod without movement of said first rod whereby said second rod is operable for said overriding of said limiting means.
Claim 12
Dependent Claim
26 words
An electrically operable bed according to claim 10 wherein said adjustable section is the knee section and said drive means is the knee section drive means.
Claim 13
Dependent Claim
26 words
An electrically operable bed according to claim 1 wherein said adjustable section is the knee section and said drive means is the knee section drive means.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |