EP0501820A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Extendible telephone
Assignee: NTT Docomo Inc
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Filing: 1992-02-28
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Granted: —
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Expires: 2012-02-28
Abstract
Abstract An improved extendible telephone having a main casing incorporating a receiver and an auxiliary casing incorporating a transmitter and dial keys and slidably mounted on the main casing. Guide grooves are formed in each of the slide surface of the main casing and a back plate which is fastened to the auxiliary casing. Rail members are fitted in the slide surface of the main casing. The auxiliary casing is slidable along the rail members toward and away from an extended position while being guided by the guide grooves. The rail members each has an angled lug while the back plate is formed with two spaced pairs of angled recesses. When the auxiliary casing is slid to the extended position or a contracted position, the angled lugs selectively mate with either of the two pairs of angled recesses to lock the auxiliary casing in position.
Inventors
- 👤 Hitoshi c/o NEC Corporation Masuda
- 👤 Masataka c/o NEC Corporation Suzuki
- 👤 Masataka c/o NEC Corporation Ohno
- 👤 Kazuyoshi Kobayashi
- 👤 Hiromitsu Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 15:21
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/0202; H04M1/0206; H04M1/0208; H04M1/0235; H04M1/0237; H04M1/03
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
126 words
An extendible telephone having a main casing provided at least with a receiver and a slide surface, and an auxiliary casing provided at least with a transmitter and mounted on said main casing to be extendible from said main casing in a sliding motion, said telephone comprising: a back plate member fastened to the back of said auxiliary casing which faces slide surface of said main casing; slide members intervening between said surface of said main casing and said back plate member for allowing said auxiliary casing to slide relative to said main casing to either of an extended position and a concentrated position; and a support member for connecting said plate member slidably to said slide surface of said main casing via said slide members.
Claim 2
Dependent Claim
85 words
A telephone as claimed in claim 1, further comprising a pair of grooves extending in a longitudinal direction on said slide surface of main casing in close proximity to opposite side edges of said slide surface and symmetrically to each other, a pair of guide slots formed through said main casing in parallel to said pair of grooves and closer to said opposite side edges than said grooves, and a pair of rectangular holes located above and in alignment with said pair of guide slots.
Claim 3
Dependent Claim
68 words
A telephone as claimed in claim 2, wherein said slide members have a configuration complementary to the configuration of said pair of grooves and each comprises a flat portion, a bulged portion extending in the longitudinal direction of said flat portion, an angled lug located at the intermediate between opposite ends of said bulged portion, and a pair of pawls located at opposite ends of said slide member.
Claim 4
Dependent Claim
36 words
A telephone as claimed in claim 4, wherein said support member comprises an elongate hook having at opposite ends thereof a pair of pawls which extend throughout said pair of rectangular holes of said main casing.
Claim 5
Dependent Claim
109 words
A telephone as claimed in claim 4, wherein said back plate member comprises a pair of pawls provided on the back facing said slide surface of said main casing and mating with and sliding in said pair of guide slots of said main casing, a first and a second pair of recesses spaced apart from each other by a predetermined distance and selectively engageable with said pair of angled lugs of said slide members, and a pair of guide grooves located closer to opposite side edges of said back plate member than said first and second pairs of recesses for slidably receiving said pair of pawls of said hook.
Claim 6
Dependent Claim
24 words
A telephone as claimed in claim 5, further comprising a pawl formed at the lower edge of said slide surface of said main casing.
Claim 7
Dependent Claim
35 words
A telephone as claimed in claim 6, wherein said back plate member further comprises an elonate guide recess for allowing said pawl of said main casing to slide therein when said auxiliary casing is slid.
Claim 8
Dependent Claim
31 words
A telephone as claimed in claim 1, wherein said back plate member, said slide members and said support member are made of resin which are highly sliable and resistive to wear.
Claim 9
Dependent Claim
76 words
An extendible telephone having a main casing provided at least with a receiver, and an auxiliary casing provided at least with a transmitter and mounted in said main casing to be extendible from said main casing in a sliding motion, said telephone comprising: a curved slide surface along which said auxiliary casing is slidable relative to said main casing; and connecting means for connecting said auxiliary casing slidable to said main casing via said slide surface.
Claim 10
Dependent Claim
52 words
A telephone as claimed in claim 9, wherein said connecting means comprises slots formed in one of said main casing and said auxiliary casing for delimiting the slidable range of said auxiliary casing relative to said main casing, and lugs provided on the other of said main casing and said auxiliary casing.
Claim 11
Dependent Claim
29 words
A telephone as claimed in claim 10, wherein said connecting means further comprising leaf springs each maintaining one of the lugs in engagement with associated one of said slots.
References Cited (Backward Citations)
No citation records indexed.
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