US3882554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable bed
Assignee: Individual
•
Filing: 1974-01-14
•
Granted: 1975-05-13
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Expires: 1994-01-14
Abstract
Abstract A retractable bed has a frame with pairs of legs standing against opposite walls of a room and horizontal room spanning members extending between tops of the legs against the ceiling of the room, a bed platform, four retracting lines slidably extending from the corners of the bed platform vertically upward to the horizontal members, along the horizontal members, and downward at one pair of legs, a counterweight adjacent to a pair of legs attached to the retracting lines, four support lines extending from the corners of the bed platform over pulleys at the tops of the legs, and slack take-up weights at the ends of the support lines over the pulleys limiting the travel of the support lines over the pulleys and up slack in the support lines when the bed platform is retracted upward to the horizontal members balanced by the counterweight. The retracting lines pass over the pulleys mounted on a single shaft disposed over the counterweight so that a sheave and endless rope may rotate the shaft to raise and lower the bed platform between retracted and sleeping positions.
Inventors
- 👤 Frederic E Glass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:18
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/84
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
198 words
A retractable bed comprising, in combination, a frame having transverse members and two pairs of legs supporting the ends of said transverse members to span a room adjacent to the ceiling, a bed platform smaller than the span of said room, support lines fixed to the cornes of said bed platform, pulley means at the ends of said transverse members over which said support lines run, slack take-up weights on said support lines beyond said pulley means limiting travel of said support lines over said pulley means securing said bed platform in a lowe sleeping position with said support lines extending upward and outward from the corners of said bed platform to said pulley means at the ends of said transverse members, four retracting lines extending vertically upward to said transverse members from the corners of said bed platform and extending slidably along said transverse members to extend downward adjacent to one pair of said legs, and a counterweight fixed to said retracting lines substantially balancing the weight of said bed platform as said platform is retracted upward against the ceiling, said slack takeup weights taking up slack in said support lines as Said bed platform is retracted.
Claim 2
Dependent Claim
198 words
A retractable bed comprising, in combination, a frame having transverse members and two pairs of legs supporting the ends of said transverse members to span a room adjacent to the ceiling, a bed platform smaller than the span of said room, support lines fixed to the cornes of said bed platform, pulley means at the ends of said transverse members over which said support lines run, slack take-up weights on said support lines beyond said pulley means limiting travel of said support lines over said pulley means securing said bed platform in a lowe sleeping position with said support lines extending upward and outward from the corners of said bed platform to said pulley means at the ends of said transverse members, four retracting lines extending vertically upward to said transverse members from the corners of said bed platform and extending slidably along said transverse members to extend downward adjacent to one pair of said legs, and a counterweight fixed to said retracting lines substantially balancing the weight of said bed platform as said platform is retracted upward against the ceiling, said slack takeup weights taking up slack in said support lines as Said bed platform is retracted.
Claim 3
Dependent Claim
34 words
The combination according to claim 1 wherein said transverse members each have a central member and two end members telescoping into the ends of said central member to fixed therein to span a room.
Claim 4
Dependent Claim
65 words
The combination according to claim 2 wherein said central member are the length of one dimension of siad bed platform, and with the addition of central assemblies containing pulleys over which said retracting lines run, said central assemblies being fixed at the ends of said central members and wherein said legs have screw jacks at their lower ends jamming said frame between floor and ceiling.
Claim 5
Dependent Claim
38 words
The combination according to claim 1 with the addition of a shaft journalled at one end of said transverse membes, said shaft having sheaves mounted thereon over which said retracting lines run and from which said counterweight hangs.
Claim 6
Dependent Claim
38 words
The combination according to claim 4 with the addition of a single sheave mounted on said shaft, and an endless loop disposed over said single sheave, pulling said loop rotating said shaft retracting and lowering said bed platform.
Claim 7
Dependent Claim
35 words
The combination according to claim 1 wherein said legs are tubular and said pulley means are at the tops of said legs, said slack take-up weights hanging from said support lines within said tubular legs.
Claim 8
Dependent Claim
21 words
The combination according to claim 1 wherein said counterweight is an elongated flat weight hanging between a pair of said legs.
Claim 9
Dependent Claim
46 words
The combination according to claim 1 with the addition of first and second sheaves independently journalled at the ends of said transverse members over which said retracting lines run and from which said counterweight hangs, and an elastically twistable shaft connecting said first and second sheaves.
Claim 10
Dependent Claim
78 words
The combination according to claim 8 wherein said first and second sheaves are between said transverse members and contain pairs of aperture, and wherein said shaft has forked ends engaging said pairs of apertures connecting said sheaves, and with the addition of a single sheave mounted to rotate with said first sheave, and an endless loop disposed over said single sheave so that pulling said loop rotates said first and second sheaves retracting and lowering said bed platform.
Claim 11
Dependent Claim
52 words
The combination according to claim 1 wherein said support lines extend from the ends of said bed platform to said pulley means; wherein said support lines cross at the ends of said bed platform; and with the addition of compression members extending between the ends of said transverse members of said frame.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |