US4074371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motorized hide-a-bed actuating mechanism
Assignee: CHRISTIAN SERVICES Inc
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Filing: 1976-08-04
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Granted: 1978-02-21
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Expires: 1996-08-04
Abstract
Abstract A motorized actuating mechanism for attachment to sofabeds, hide-a-beds and the like in order to make the opening and closing operation of said beds fully automatic. The mechanism is installed into the existing frame of the sofabed and a switch is installed on the outside of the sofa in order to activate the mechanism. The mechanism includes a main support frame which is attachable to the main frame of the sofa, a reversible drive motor mounted upon said main frame for actuating a threaded lead screw, a cross drive member driven by said lead screw in a reciprocating manner, double parallel slotted track members for constraining and guiding the cross drive member in a desired manner, a pair of linkage connectors, pivot arms, lower frame pivot arm mounts, upper frame cross rod, and upper frame mount for attachment to the bed portion of the sofa. The switch associated with the mechanism is spring biased to the off position and one of the two on positions drives the motor in a direction to open the bed and in the other on position drives the motor to operate the mechanism in order to close the bed. A large lever is provided for the switch which may easily be operated by the elderly and infirm.
Inventors
- 👤 John L. Lindbloom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:03
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
340 words
An actuation apparatus for causing translation of movable portions of a sofa bed and the like between different functional conformations, the apparatus comprising: a stationary mounting frame connected to stationary portions of the sofa bed; guide means mounted on the stationary mounting frame on opposite sides thereof, the guide means each having an S-shaped slot formed therein, the slots being aligned; motor means pivotally mounted on the stationary mounting frame; screw means driven by the motor means; cross drive shaft means mounted for driven movement on the screw means; follower means mounted on each end of the cross drive shaft means, each follower means respectively extending toward the guide means on that side of the stationary mounting frame adjacent said follower means and being slidably received within the slot in said guide means; link means pivotally connected to the follower means at one end of said link means; pivot arm means each pivotally mounted at a lower end to the stationary mounting frame adjacent to each of the guide means, the link means being pivotally mounted to each of the pivot arm means medially of the lengths of said pivot arm means, the pivot arm means each having an arcuate slot formed in the upper ends thereof; cross rod means having follower members at each end thereof, the follower members being slidably received respectively within adjacent arcuate slots in the pivot arm means; a movable frame mounted to the movable portions of the sofa bed, the cross rod means being connected to the movable frame; and, switch means for activating the motor means, energization of the motor means driving the screw means to cause the cross drive shaft means to be linearly displaced, the follower means following the S-shaped slots in the guide means to cause the link means and the pivot arm means pivotally connected thereto to be displaced vertically, the cross rod means following the slots in the pivot arm means to displace vertically the movable frame and thus the movable portions of the sofa bed connected thereto.
Claim 2
Dependent Claim
340 words
An actuation apparatus for causing translation of movable portions of a sofa bed and the like between different functional conformations, the apparatus comprising: a stationary mounting frame connected to stationary portions of the sofa bed; guide means mounted on the stationary mounting frame on opposite sides thereof, the guide means each having an S-shaped slot formed therein, the slots being aligned; motor means pivotally mounted on the stationary mounting frame; screw means driven by the motor means; cross drive shaft means mounted for driven movement on the screw means; follower means mounted on each end of the cross drive shaft means, each follower means respectively extending toward the guide means on that side of the stationary mounting frame adjacent said follower means and being slidably received within the slot in said guide means; link means pivotally connected to the follower means at one end of said link means; pivot arm means each pivotally mounted at a lower end to the stationary mounting frame adjacent to each of the guide means, the link means being pivotally mounted to each of the pivot arm means medially of the lengths of said pivot arm means, the pivot arm means each having an arcuate slot formed in the upper ends thereof; cross rod means having follower members at each end thereof, the follower members being slidably received respectively within adjacent arcuate slots in the pivot arm means; a movable frame mounted to the movable portions of the sofa bed, the cross rod means being connected to the movable frame; and, switch means for activating the motor means, energization of the motor means driving the screw means to cause the cross drive shaft means to be linearly displaced, the follower means following the S-shaped slots in the guide means to cause the link means and the pivot arm means pivotally connected thereto to be displaced vertically, the cross rod means following the slots in the pivot arm means to displace vertically the movable frame and thus the movable portions of the sofa bed connected thereto.
Claim 3
Dependent Claim
14 words
The apparatus of claim 1 wherein the pivot arm means are S-shaped in conformation.
Claim 4
Dependent Claim
23 words
The apparatus of claim 1 wherein the motor means comprises an electrical motor operable in a forward direction and in a reverse direction.
Claim 5
Dependent Claim
50 words
The apparatus of claim 1 wherein the switch means is disposed remotely from the motor means at a location of the sofa bed convenient to a user, the switch means having forward, reverse, and off positions, the switch means having means for biasing said switch means to the off position.
Claim 6
Dependent Claim
70 words
The apparatus of claim 1 wherein the cross drive shaft means comprises a bar having a threaded nut connected thereto, the bar having an aperture formed medially of the length of the bar, the nut surmounting the aperture, portions of the screw means being received within the aperture and threadably received within the nut, the bar and nut being moved along the screw means on rotation of the screw 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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |