US3813150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair with backrest movable up and down and hardware therefor
Assignee: Moharcs Industries Inc
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Filing: 1972-08-22
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Granted: 1974-05-28
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Expires: 1992-08-22
Abstract
Abstract This chair has a backrest which can be moved up and down between raised and lowered positions; and can be reclined to T.V. and fully reclined positions. A retractable footrest is also provided to be projected to T.V. position, and moved to fully reclined position. The raising and lowering of the backrest can only take place when the seat is in upright position under control of a handle operated by the person sitting in the chair, who must lean forward to get at the handle and thus move away from the backrest before the backrest is moved up or down. The backrest is locked down in the upright position, with the footrest retracted. Means is provided to lock the backrest in its up position. Also means is provided to lock the footrest mechanism in retracted position. Spring means is provided to assist in lifting the backrest. Means is provided to releasably lock the backrest in ''''up'''' position throughout the recline cycle. Means is provided to keep the handle from being operated to lower the backrest, when the backrest is in T.V. or fully reclined positions. The backrest and footrest are supported by mechanism disposed on both sides of the chair, such mechanism being controlled by handle controlled means on one side only of the chair.
Inventors
- 👤 A Katz
- 👤 R Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:04
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/02; A47C1/031; A47C1/034; A47C1/035; A47C1/0355
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
121 words
A chair comprising a base, seat means, a backrest, manually controlled means movably mounted on said base, means actuable by actuation of said manually controlled means, to move said backrest upwardly and downwardly relative to said seat means, means to connect said seat means to said base for movement from upright position to an inclined position, means to connect said backrest to said seat means and base for movement up and down relative to said seat means only in the upright position of said seat means, and for movement of said backrest to iNclined position relative to said base, only when said backrest is in up position, and only together with movement of said seat means from upright to inclined position.
Claim 2
Dependent Claim
121 words
A chair comprising a base, seat means, a backrest, manually controlled means movably mounted on said base, means actuable by actuation of said manually controlled means, to move said backrest upwardly and downwardly relative to said seat means, means to connect said seat means to said base for movement from upright position to an inclined position, means to connect said backrest to said seat means and base for movement up and down relative to said seat means only in the upright position of said seat means, and for movement of said backrest to iNclined position relative to said base, only when said backrest is in up position, and only together with movement of said seat means from upright to inclined position.
Claim 3
Dependent Claim
118 words
The combination of claim 1, a retractable and extensible footrest, means to movably connect said footrest to said seat means and base, means to lock said footrest in retracted condition when said seat means is in upright position, and to releasably lock said seat means in said upright position thereof, means to release said footrest for extension, upon moving said backrest upwardly from a down position thereof to an up position, in the upright position of said seat means, and to release said seat means for movement to inclined position, and means to recline said backrest in the up position of the backrest, simultaneously with movement of said seat means to inclined position and projection of the footrest.
Claim 4
Dependent Claim
121 words
A chair comprising seat means, a backrest, means to move the backrest up and down relative to said seat means, and means manually actuable by the occupant of the chair to operate said means for moving the backrest upwardly and downwardly, a base, means to mount said manually actuable means on said base, and means to connect said seat means to said base for reclining movement relative thereto, means to connect said backrest to said base and to said seat means for reclining movement of said backrest relative to said base, said manually actuable means comprising handle means pivotally mounted on said base and extending forwardly of its pivotal connection to said base, when said backrest is in a down position.
Claim 5
Dependent Claim
121 words
A chair comprising seat means, a backrest, means to move the backrest up and down relative to said seat means, and means manually actuable by the occupant of the chair to operate said means for moving the backrest upwardly and downwardly, a base, means to mount said manually actuable means on said base, and means to connect said seat means to said base for reclining movement relative thereto, means to connect said backrest to said base and to said seat means for reclining movement of said backrest relative to said base, said manually actuable means comprising handle means pivotally mounted on said base and extending forwardly of its pivotal connection to said base, when said backrest is in a down position.
Claim 6
Dependent Claim
148 words
A chair comprising seat means, a backrest, manually controlled means, and means actuable by said manually controlled means, to move said backrest upwardly and downwardly relative to said seat means, a base, means to movably connect said seat means to said base for movement from upright to inclined position, means to connect said backrest to said base and seat means for movement from upright to inclined positions, means to permit movement of said backrest upwardly or downwardly only when said seat means and backrest are in upright positions, and means to prevent movement of said seat means and backrest from upright to inclined positions unless said backrest has first been moved to its up position, means for locking said backrest in its up position, and means to prevent said backrest from being moved from upright to inclined position without first operating said means for moving said backrest upwardly.
Claim 7
Dependent Claim
148 words
A chair comprising seat means, a backrest, manually controlled means, and means actuable by said manually controlled means, to move said backrest upwardly and downwardly relative to said seat means, a base, means to movably connect said seat means to said base for movement from upright to inclined position, means to connect said backrest to said base and seat means for movement from upright to inclined positions, means to permit movement of said backrest upwardly or downwardly only when said seat means and backrest are in upright positions, and means to prevent movement of said seat means and backrest from upright to inclined positions unless said backrest has first been moved to its up position, means for locking said backrest in its up position, and means to prevent said backrest from being moved from upright to inclined position without first operating said means for moving said backrest upwardly.
Claim 8
Dependent Claim
143 words
Hardware for a chair comprising a seat link, a plate adapted to be fixed to the chair, link means movably connecting said plate to said seat link, a primary bell crank pivoted to said plate, a primary drive link, pivoted to said primary bell crank, a back carrier link pivoted at one end to said plate, a high-low mounting link pivoted to the seat link, and to the other end of said back carrier link, a lower carrier link pivoted to said high-low mounting link, a backrest mounting link pivoted to said lower carrier link, a toggle link pivoted to said primary drive link and to said high-low mounting link, and an upper carrier link pivoted to said backrest mounting link and to said high-low mounting link, and a secondary drive link pivoted to said toggle link, and to said upper carrier link.
Claim 9
Dependent Claim
143 words
Hardware for a chair comprising a seat link, a plate adapted to be fixed to the chair, link means movably connecting said plate to said seat link, a primary bell crank pivoted to said plate, a primary drive link, pivoted to said primary bell crank, a back carrier link pivoted at one end to said plate, a high-low mounting link pivoted to the seat link, and to the other end of said back carrier link, a lower carrier link pivoted to said high-low mounting link, a backrest mounting link pivoted to said lower carrier link, a toggle link pivoted to said primary drive link and to said high-low mounting link, and an upper carrier link pivoted to said backrest mounting link and to said high-low mounting link, and a secondary drive link pivoted to said toggle link, and to said upper carrier link.
Claim 10
Dependent Claim
104 words
The combination of claim 5, the pivotal connection between the primary bell crank and the primary drive link, being concentric with the pivotal connection of the back carrier link to said plate, and the pivotal connection of said toggle link to said primary drive link, being concentric with the pivotal connection of the high-low mounting link to said back carrier link, in one position of said primary bell crank, when the backrest mounting link is raised, and the pivotal points of said concentric pairs of pivotal connections being offset, in another position of said primary bell crank, when said backrest mounting link is lowered.
Claim 11
Dependent Claim
61 words
The combination of claim 6, and the pivotal connecTion of the said toggle link to said secondary drive link being located forward of the center link connecting the pivotal connection of said secondary drive link to said upper carrier link, and the pivotal connection of said toggle link to said high-low mounting link, in said position of said primary bell crank.
Claim 12
Dependent Claim
33 words
The combination of claim 5, and means to rotate said primary bell crank, comprising a handle pivoted to said plate, and an actuation link connecting said handle and to said primary bell crank.
Claim 13
Dependent Claim
178 words
Hardware for a chair, comprising a plate adapted to be attached to said chair, a seat link, link means connecting said seat link to said plate for moving said seat link from upright to inclined position, extensible and retractable lazy-tong linkage connected to said link means and to said seat link, a handle pivoted to said plate and means controlled by said handle, to releasably lock said linkage in retracted position, and for locking said seat link against movement from upright to reclining position, a crank on said handle, an actuator link pivoted to said crank, a primary bell crank pivoted to said plate, a backrest mounting link, means on said primary bell crank to raise and lower said backrest mounting link, the pivotal connection between the crank and said actuator link being above a center line passing through the pivotal connection of the handle to the plate, and the pivotal connection of said primary bell crank to said actuator link, when the primary bell crank is in position to hold said backrest mounting link in lowered position.
Claim 14
Dependent Claim
178 words
Hardware for a chair, comprising a plate adapted to be attached to said chair, a seat link, link means connecting said seat link to said plate for moving said seat link from upright to inclined position, extensible and retractable lazy-tong linkage connected to said link means and to said seat link, a handle pivoted to said plate and means controlled by said handle, to releasably lock said linkage in retracted position, and for locking said seat link against movement from upright to reclining position, a crank on said handle, an actuator link pivoted to said crank, a primary bell crank pivoted to said plate, a backrest mounting link, means on said primary bell crank to raise and lower said backrest mounting link, the pivotal connection between the crank and said actuator link being above a center line passing through the pivotal connection of the handle to the plate, and the pivotal connection of said primary bell crank to said actuator link, when the primary bell crank is in position to hold said backrest mounting link in lowered position.
Claim 15
Dependent Claim
108 words
Chair hardware comprising, a plate adapted to be attached to a chair, a seat link, first link means to movably connect said seat link to said plate, a back carrier link pivoted to said plate, a high-low mounting link pivoted to said seat link and to said back carrier link, a lower carrier link pivoted to said high-low mounting link, a backrest mounting link pivoted to said lower carrier link, a toggle link pivoted to said high-low mounting link, a drive link pivoted to said toggle link, and an upper carrier link pivoted to said backrest mounting link, to said drive link and to said high-low mounting link.
Claim 16
Dependent Claim
108 words
Chair hardware comprising, a plate adapted to be attached to a chair, a seat link, first link means to movably connect said seat link to said plate, a back carrier link pivoted to said plate, a high-low mounting link pivoted to said seat link and to said back carrier link, a lower carrier link pivoted to said high-low mounting link, a backrest mounting link pivoted to said lower carrier link, a toggle link pivoted to said high-low mounting link, a drive link pivoted to said toggle link, and an upper carrier link pivoted to said backrest mounting link, to said drive link and to said high-low mounting link.
Claim 17
Dependent Claim
84 words
The combination of claim 10, and limit stop means on said upper carrier link to limit rotation of said drive link relative to said upper carrier link in a position where the pivotal connection between said drive link and said toggle link is past a center line passing through the pivotal connection of said drive link to said upper carrier link and the pivotal connection of said toggle link to said high-low mounting link, to lock said backrest mounting link in one position thereof.
Claim 18
Dependent Claim
18 words
The combination of claim 10, and means to rotate said toggle link for raising said backrest mounting link.
Claim 19
Dependent Claim
43 words
The combination of claim 12, said means to rotate said toggle link comprising a handle pivoted to said plate, and second link means connecting said handle to said toggle link to raise said backrest mounting link upon moving said handle in one direction.
Claim 20
Dependent Claim
35 words
The combination of claim 13, extensible and retractable lazy-tong footrest linkage means connected to said seat link and to said first link means, and means to lock said lazy-tong footrest linkage means in retracted position.
Claim 21
Dependent Claim
23 words
The combination of claim 14, said last mentioned lock means including means to lock said seat link against movement relative to said plate.
Claim 22
Dependent Claim
34 words
The combination of claim 10, and limit stop means, to hold said toggle link and drive link in position to lock said backrest mounting link in the raised position of said backrest mounting link.
Claim 23
Dependent Claim
107 words
The combination of claim 10, a member pivoted to said plate, another drive link pivoted to said pivoted member and also being pivoted to said toggle link, manually actuable means to rotate said pivoted member, the pivotal point of said back carrier link to said plate being concentric with the pivotal point of said another drive link to said pivoted member, in one angular position of said Pivoted member, and the pivotal point of said back carrier link to said high-low mounting plate being concentric with the pivotal point of said another drive link to said toggle link in said one angular position of said pivoted member.
Claim 24
Dependent Claim
194 words
Chair hardware comprising a pair of aligned plates adapted to be attached to opposite sides of a chair, a seat link at each side of the chair, first link means to connect each seat link to the plate on the same side of the chair, a back carrier link pivoted to each plate, a high-low mounting link pivoted to each seat link and to the back carrier link on the same side of the chair, a lower carrier link pivoted to each high-low mounting link, a backrest mounting link pivoted to each lower carrier link, a toggle link pivoted to each high-low mounting link, a drive link pivoted to each toggle link, an upper carrier link pivoted to each backrest mounting link, to the drive link on the same side of the chair and to the high-low mounting link on the same side of the chair, a transverse torque shaft attached at its ends to said toggle links on both sides of the chair, and means controlled by manually operable means on one side of the chair only, to rotate the toggle links on both sides of the chair through said transverse torque shaft.
Claim 25
Dependent Claim
194 words
Chair hardware comprising a pair of aligned plates adapted to be attached to opposite sides of a chair, a seat link at each side of the chair, first link means to connect each seat link to the plate on the same side of the chair, a back carrier link pivoted to each plate, a high-low mounting link pivoted to each seat link and to the back carrier link on the same side of the chair, a lower carrier link pivoted to each high-low mounting link, a backrest mounting link pivoted to each lower carrier link, a toggle link pivoted to each high-low mounting link, a drive link pivoted to each toggle link, an upper carrier link pivoted to each backrest mounting link, to the drive link on the same side of the chair and to the high-low mounting link on the same side of the chair, a transverse torque shaft attached at its ends to said toggle links on both sides of the chair, and means controlled by manually operable means on one side of the chair only, to rotate the toggle links on both sides of the chair through said transverse torque shaft.
Claim 26
Dependent Claim
66 words
The combination of claim 18, said means controlled by said means controlled by said manually operable means including a member pivoted to one of said plates, a handle pivoted to said one of said plates, an actuator link connecting said handle to said pivoted member, and another drive link, pivoted to said pivoted member and to said toggle link on said one side of said chair.
Claim 27
Dependent Claim
102 words
The combination of claim 19, the pivotal point of said another drive link to said pivoted member, on said one side of said chair and the pivotal point of said back carrier link on said side of said chair to said plate being concentric in one angular position of said pivoted member, and the pivotal point of said back carrier link to said high-low link on said one side of said chair being concentric with the pivotal point of said another drive link to said toggle link on said one side of said chair, in said angular position of said pivotal member.
Claim 28
Dependent Claim
85 words
The combination of claim 20, said another drive link and back carrier link being movable in unison, upon reclining said seat link, without disturbing the relative positions of said lower carrier links, said backrest mounting links, said toggle links, said upper carrier links, said first mentioned drive links, and said high-low mounting links, to bring said another drive link to almost horizontal position to prevent rotation of said pivoted member, to thereby prevent operation of the handle when said seat link is in reclining position.
Claim 29
Dependent Claim
122 words
A chair comprising a frame, a support member fixed to said frame, a seat link, means to movably connect said seat link to said support member, a first link pivoted to said seat link, a chain of interpivoted links, means to pivotally connect the end links of said chain of links to spaced pivot points of said first link, a backrest mounted on a link of said chain of links other than the end links of said chain of links, a carrier link pivoted to said support member and to said first link, manually actuable means movably mounted on said support member, and means connected to said manually actuable means to raise and lower the link on which said backrest is mounted.
Claim 30
Dependent Claim
122 words
A chair comprising a frame, a support member fixed to said frame, a seat link, means to movably connect said seat link to said support member, a first link pivoted to said seat link, a chain of interpivoted links, means to pivotally connect the end links of said chain of links to spaced pivot points of said first link, a backrest mounted on a link of said chain of links other than the end links of said chain of links, a carrier link pivoted to said support member and to said first link, manually actuable means movably mounted on said support member, and means connected to said manually actuable means to raise and lower the link on which said backrest is mounted.
Claim 31
Dependent Claim
67 words
The combination of claim 22, said raise and lower means comprising a member pivoted relative to said support member, a primary drive link pivotally connected to said pivoted member, a toggle link pivoted to said first link, means to pivot said primary drive link to said toggle link, and a secondary drive link connecting the toggle link to one of the links in said chain of links.
Claim 32
Dependent Claim
68 words
The combination of claim 23, the pivotal point of said carrier link to said first link and the pivotal point of said primary drive link to said toggle link being coaxial, and the pivotal point of said caRrier link to said support member and the pivotal point of said pivoted member to said primary drive link being coaxial, when said backrest mounting link is in its raised position.
Claim 33
Dependent Claim
137 words
Chair hardware comprising a support member adapted to be attached to the frame of a chair, a seat link, first link means to movably connect said seat link to said support member, a high-low mounting link pivoted to said seat link, a backrest mounting link, an upper carrier link connecting said backrest mounting link to said high-low mounting link, a lower carrier link connecting said backrest mounting link to said high-low mounting link, a manual handle pivoted to said support member, and means connecting said handle with said upper carrier link to raise said backrest mounting link when said handle is rotated in one direction and to lower said backrest mounting link when said handle is rotated in an opposite direction, and a back carrier link pivoted to said support member and to said high-low mounting link.
Claim 34
Dependent Claim
137 words
Chair hardware comprising a support member adapted to be attached to the frame of a chair, a seat link, first link means to movably connect said seat link to said support member, a high-low mounting link pivoted to said seat link, a backrest mounting link, an upper carrier link connecting said backrest mounting link to said high-low mounting link, a lower carrier link connecting said backrest mounting link to said high-low mounting link, a manual handle pivoted to said support member, and means connecting said handle with said upper carrier link to raise said backrest mounting link when said handle is rotated in one direction and to lower said backrest mounting link when said handle is rotated in an opposite direction, and a back carrier link pivoted to said support member and to said high-low mounting link.
Claim 35
Dependent Claim
58 words
The combination of claim 25, said means connecting said handle to said backrest mounting link comprising a primary drive link, pivotal means to connect said primary drive link to said handle, a toggle link pivoted to said high-low mounting link and to said primary drive link, and a link connecting said toggle link to said upper carrier link.
Claim 36
Dependent Claim
77 words
The combination of claim 26, the pivotal point of said back carrier link to said support member being concentric with the pivotal point of said primary drive link to said pivoted means in one position of said primary drive link, and the pivotal point of said back carrier link to said high-low mounting link being concentric with the pivotal point of primary drive link with said toggle link in said one position of said primary drive link.
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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |