US3736601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible sofa
Assignee: Individual
•
Filing: 1971-10-12
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Granted: 1973-06-05
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Expires: 1991-10-12
Abstract
Abstract A couch which by day serves as a seat for several people and can be converted into an upper and lower bed by night. The back of the couch is constructed with a portion which telescopes into the seat and is concealed therein when the couch is used in the daytime as a seat. The back of the couch is mounted on telescopic support members permitting the back to be elevated, the telescopic members being releasably locked in the elevated position, when so raised, the back is then swung out to a horizontal position. A pair of rigid posts are then placed in position under the front edge of the raised back. The back thus becomes an upper bed having a width substantially or approximately the same as a conventional single bed.
Inventors
- 👤 Riches G Wiseman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:18
CPC Classifications
A; A47; A47C; A47C19/00; A47C19/20; A47C19/205; B; B61; B61D; B61D31/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
242 words
A convertible sofa which in its normal closed position, forms a lounge having a seat back of conventional height and in its open position forms upper and lower beds comprising in combination: a. a hollow rectilinear base having front, back and end walls and a top defining a seat portion, said seat portion having a substantially wide slot extending from end to end of the seat adjacent to the back wall; b. a vertically reciprocatable seat back having a bottom portion telescoped through said slot into the hollow base in the normal closed position and an upper exposed seat back forming portion in said position, the combined width of the said portion being about the width of a conventional single bed; c. a pair of vertically reciprocatable back support members movable between raised and lowered positions; d. hinge means hingedly connecting the seat back to the upper end of the back support members permitting the seat back to be swung to and from its vertical and horizontal positions, whereby by reciprocating said back support members in an upward direction, said seat back is moved upwardly from its closed vertical position to a raised vertical position permitting it to be swung to a horizontal position or downward from the raised position with the back in its vertical position to telescope the seat back bottom portion into the base; and e. means retaining the vertically reciprocatable members in the raised and lowered positions respectively.
Claim 2
Dependent Claim
242 words
A convertible sofa which in its normal closed position, forms a lounge having a seat back of conventional height and in its open position forms upper and lower beds comprising in combination: a. a hollow rectilinear base having front, back and end walls and a top defining a seat portion, said seat portion having a substantially wide slot extending from end to end of the seat adjacent to the back wall; b. a vertically reciprocatable seat back having a bottom portion telescoped through said slot into the hollow base in the normal closed position and an upper exposed seat back forming portion in said position, the combined width of the said portion being about the width of a conventional single bed; c. a pair of vertically reciprocatable back support members movable between raised and lowered positions; d. hinge means hingedly connecting the seat back to the upper end of the back support members permitting the seat back to be swung to and from its vertical and horizontal positions, whereby by reciprocating said back support members in an upward direction, said seat back is moved upwardly from its closed vertical position to a raised vertical position permitting it to be swung to a horizontal position or downward from the raised position with the back in its vertical position to telescope the seat back bottom portion into the base; and e. means retaining the vertically reciprocatable members in the raised and lowered positions respectively.
Claim 3
Dependent Claim
97 words
A convertible sofa according to claim 1 in which each support member consists essentially of a horizontal lever arm having its outer end pivotally mounted in the base adjacent the front wall of the base and extending rearwardly with its rear end adjacent said back wall and a vertical portion connected at its bottom end to the near end of the horizontal arm and the hinge means mounted on the upper end thereof, and mechanical means for actuating said lever arm to reciprocate said vertical portions in a selected direction to raise and lower said seat back.
Claim 4
Dependent Claim
31 words
A convertible sofa according to claim 1 including mechanical means urging said seat back into its horizontal position when said seat is raised by said back supports to the raised position.
Claim 5
Dependent Claim
31 words
A convertible sofa according to claim 3 in which said mechanical means comprises springs acting on said seat back in a direction to urge the seat back to its horizontal position.
Claim 6
Dependent Claim
31 words
A convertible sofa according to claim 2 including mechanical means urging said seat back into its horizontal position when said seat is raised by said back supports to the raised position.
Claim 7
Dependent Claim
31 words
A convertible sofa according to claim 2 in which said mechanical means comprises springs acting on said seat back in a direction to urge the seat back to its horizontal position.
Claim 8
Dependent Claim
44 words
A convertible couch according to claim 1 in which said releasable locking means comprises a stabilizing bracket in which each back support member is slidably mounted and a clamping member carried by each member whereby the support member is secured in the raised position.
Claim 9
Dependent Claim
27 words
A convertible couch according to claim 3 having guide means retaining said seat back in its vertical position during its movement into and out of said base.
Claim 10
Dependent Claim
27 words
A convertible couch according to claim 4 having guide means retaining said seat back in its vertical position during its movement into and out of said base.
Claim 11
Dependent Claim
20 words
A convertible sofa according to claim 1 including mechanical means which reciprocates said back support member between said two positions.
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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |