Patent US3866866A successfully refreshed from Google Patents.
US3866866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible fitting
Assignee: Robert Krause GmbH and Co KG
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Filing: 1973-12-14
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Granted: 1975-02-18
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Expires: 1993-12-14
Abstract
Abstract An articulated framework especially for retractably supporting a typewriter in a desk, said framework including bracket members for being fixed to a desk within a recess provided therein for receiving the typewriter and each bracket member having a pair of parallel links pivoted thereto with a typewriter support platform pivotally connected to the other ends of the links for movement in parallelism with itself between working and retracted positions. Each bracket member is provided with a connecting flange laterally offset therefrom which is fixed to the desk and the pairs of links are interconnected to move in unison. Counterbalancing spring means are provided to counterbalance the weight of the typewriter and arresting means are provided for restraining the links while supporting the platform in extended position.
Inventors
- 👤 Karl Kneile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:46
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/14; H05K7/16; A; A47; A47B; A47B21/00; A47B21/04; A47B46/00; A47B46/005; A47B88/00; A47B88/40; A47B88/483; A47B88/497; A47B21/03; A47B21/0314; A47B2021/0321; A47B2021/0328; Y; Y10; Y10S; Y10S248/00; Y10S248/917; Y10S248/918
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
201 words
A fitting adapted for connection to an article of furniture, especially for supporting a machine such as a typewriter or the like therein for movement between extended working and retracted storage positions on the article of furniture, said fitting comprising; two laterally spaced parallelogram bar systems each comprising a bracket member, a connecting flange on each said bracket member for connection thereof to the article of furniture, a pair of parallel links pivotally connected at one end to each bracket member, a support platform pivotally supported on the other ends of said links and adapted for supporting a machine such as a typewriter, at least one said connecting flange being offset relative to the respective bracket member in a direction away from the other bracket member, arresting means operatively disposed between at least one bracket member and said links for retaining said platform in extended working position, said links extending outwardly from one end of said bracket members when supporting said platform in working position and extending downwardly from said bracket members when supporting said platform in storage position, and means connecting corresponding links of said pairs of links to cause the links to pivot on said bracket members in synchronism.
Claim 2
Dependent Claim
201 words
A fitting adapted for connection to an article of furniture, especially for supporting a machine such as a typewriter or the like therein for movement between extended working and retracted storage positions on the article of furniture, said fitting comprising; two laterally spaced parallelogram bar systems each comprising a bracket member, a connecting flange on each said bracket member for connection thereof to the article of furniture, a pair of parallel links pivotally connected at one end to each bracket member, a support platform pivotally supported on the other ends of said links and adapted for supporting a machine such as a typewriter, at least one said connecting flange being offset relative to the respective bracket member in a direction away from the other bracket member, arresting means operatively disposed between at least one bracket member and said links for retaining said platform in extended working position, said links extending outwardly from one end of said bracket members when supporting said platform in working position and extending downwardly from said bracket members when supporting said platform in storage position, and means connecting corresponding links of said pairs of links to cause the links to pivot on said bracket members in synchronism.
Claim 3
Dependent Claim
28 words
A fitting according to claim 1 in which each said bracket member and the pertaining connecting flange are in the form of flat plates disposed in substantial parallelism.
Claim 4
Dependent Claim
44 words
A fitting according to claim 1 in which each said bracket member and the pertaining connecting flange are in the form of flat plates disposed in substantial parallelism, each said bracket member and the pertaining connecting flange being substantially coextensive in the longitudinal direction.
Claim 5
Dependent Claim
83 words
A fitting according to claim 1 in which each said bracket member and the pertaining connecting flange are in the form of flat plates disposed in substantial parallelism, each said bracket member and the pertaining connecting flange being substantially coextensive in the longitudinal direction, said one connecting flange and the respective bracket member being integral with each other and a further flange extending therebetween in a plane substantially perpendicular thereto and forming the connection between the said connecting flange and the bracket member.
Claim 6
Dependent Claim
35 words
A fitting according to claim 1 which includes a shield member mounted on the said one end of at least the bracket member pertaining to said one connecting flange and extending in the lateral direction.
Claim 7
Dependent Claim
51 words
A fitting according to claim 1 which includes a bearing member at the other end of at least one bracket member, and a counterbalancing spring bearing at one end against said bearing and at the other end cooperating with said parallel links for counterbalancing a load supported on said support platform.
Claim 8
Dependent Claim
113 words
A fitting according to claim 1 in which each said bracket member and each said connecting flange are in the form of flat plates and each connecting flange is offset From the pertaining bracket member in a direction away from the bracket member, each bracket member and the pertaining connecting flange being substantially parallel and coextensive in the longitudinal direction, a lateral web extending between each bracket member and the respective connecting flange and connected to the bottom of the bracket member and to the top of the connecting flange, and stiffening ribs formed in each said web and the pertaining bracket member and connecting flange at the junctures thereof for stiffening purposes.
Claim 9
Dependent Claim
96 words
A fitting according to claim 7 in which each bracket member has a tab on the said other end thereof bent over toward the other bracket member to form a support for the end of a counterbalancing spring cooperating with said pairs of links to counterbalance a load on said support platform, each bracket member having a shield portion bent over in a direction away from the other bracket member at the said one end of the bracket member, and ribs formed at the juncture of each tab with the respective bracket member for stiffening purposes.
Claim 10
Dependent Claim
74 words
A fitting according to claim 1 in which said arresting means comprises a shaft extending transversely between and supported on said bracket members and disposed near the pivotal connection of a respective link of each pair of links with the pertaining bracket member, and hooks carried by said bar and engageable with the other link of each pair of links when the links are in position to hold the supporting platform in working position.
Claim 11
Dependent Claim
24 words
A fitting according to claim 9 in which said hooks are closely adjacent said bracket members on the sides thereof which face each other.
Claim 12
Dependent Claim
54 words
A fitting according to claim 10 which includes abutment plates on the sides of said bracket members which face each other and adjacent the said one ends of said bracket members, each abutment plate abutting at least one link of the adjacent pair of links when the support platform is in extended working position.
Claim 13
Dependent Claim
37 words
A fitting according to claim 11 in which each abutment plate also includes an abutment surface engageable by the adjacent hook when the hook is in arresting position, and spring means biasing said hooks toward arresting position.
Claim 14
Dependent Claim
26 words
A fitting according to claim 12 in which said spring means comprises at least one spring connected between a said hook and the adjacent abutment plate.
Claim 15
Dependent Claim
47 words
A fitting according to claim 1 in which said means connecting corresponding links of said pair of links comprises a bar extending in the transverse direction between said bracket members and fixedly connected at each end to a corresponding link of each of the pairs of links.
Claim 16
Dependent Claim
39 words
A fitting according to claim 14 in which the ends of said bar are connected to the said one link of each pair of links in the region that the link is pivotally connected to the respective bracket member.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |