Source: http://www.google.com/patents/US4018998?dq=6,590,872
Timestamp: 2014-03-15 00:43:54
Document Index: 27134908

Matched Legal Cases: ['art 21', 'arts 21', 'art 22', 'art 21', 'art 21', 'art 22']

Patent US4018998 - Communication hand-set foldable for protection - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA handset for connection to a communication system to serve as peripheral equipment apparatus is constructed as a two-part unit, in which the casing parts are hinged together and when folded down audio and manual access parts and elements are covered, but are accessible when the casing parts are folded...http://www.google.com/patents/US4018998?utm_source=gb-gplus-sharePatent US4018998 - Communication hand-set foldable for protectionAdvanced Patent SearchPublication numberUS4018998 APublication typeGrantApplication numberUS 05/654,849Publication dateApr 19, 1977Filing dateFeb 3, 1976Priority dateFeb 3, 1975Also published asDE2504314A1Publication number05654849, 654849, US 4018998 A, US 4018998A, US-A-4018998, US4018998 A, US4018998AInventorsSiegfried WegnerOriginal AssigneeElmeg Elektro-Mechanik GmbhExport CitationBiBTeX, EndNote, RefManPatent Citations (4), Referenced by (24), Classifications (9) External Links: USPTO, USPTO Assignment, EspacenetCommunication hand-set foldable for protectionUS 4018998 AAbstract A handset for connection to a communication system to serve as peripheral equipment apparatus is constructed as a two-part unit, in which the casing parts are hinged together and when folded down audio and manual access parts and elements are covered, but are accessible when the casing parts are folded up. In the folded up position, the microphone and speaker have particular position to each other for optimizing use as regular telephone or as a loud-speaker phone (walki-talki).
5. A handset as in claim 1, the particular angle being 180 but more than 90
FIG. 4 shows the unit with upper part 21 folded up; the two positions differ by a relative angle of 180 comparing the two figures, one can see that rear wall portions of the two parts are aligned in the folded down position, so that folding up covers 180 ready for operation. First of all, one can see now a switch 26, which corresponds to switch 12 of the unit shown in FIGS. 1 and 2. Switch 26 may also be spring biased, but it may be a slide which is manually operated, not automatically. In either case, switch 26 is held down when parts 21, 22 are folded down, but in the folded up position switch 26 may be pulled out, because it does not automatically assume a pull out position when not spring biased. A second switch 27 is provided for alternatingly connecting the microphone and the loudspeaker to the signal lines. The microphone is located in the lower part 22, behind the slots 25. Analogously, slots 30 in the upper part 21 provide audio access to the loudspeaker in part 21. The lower part 22 contains, in addition, a key board 24 for dialing. The dial keys and the audio access slots are covered when the casing parts are folded down.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleCA792307A *Aug 13, 1968It Telecommunicazioni SiemensTelephone setDE822251C *Nov 19, 1948Nov 22, 1951Alfred MuchAbgeschirmtes MikrofonFR590514A * Title not availableGB1212389A * Title not available* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS4251696 *Aug 22, 1979Feb 17, 1981International Telephone And Telegraph CorporationCompact telescoping telephone setUS4581490 *Dec 22, 1983Apr 8, 1986Richard GenenderWall telephone assemblyUS4727569 *Feb 18, 1986Feb 23, 1988Wolfgang A. KutriebHardwire airplane telephone apparatusUS4845772 *Jun 13, 1988Jul 4, 1989Motorola, Inc.Portable radiotelephone with control switch disablingUS4897873 *Nov 4, 1988Jan 30, 1990Motorola, Inc.Multipurpose hinge apparatus for foldable telephonesUS5027394 *Sep 30, 1988Jun 25, 1991Matsushita Electric Industrial Co., Ltd.Folding type telephone containing a wound electrical connectionUS5050207 *Nov 3, 1989Sep 17, 1991National Transaction Network, Inc.Portable automated teller machineUS5111503 *Aug 7, 1991May 5, 1992Fujitsu LimitedPortable telephone setUS5148471 *Nov 20, 1989Sep 15, 1992Motorola, Inc.Communications device with voice recognition and movable element control interfaceUS5157717 *Feb 20, 1991Oct 20, 1992National Transaction Network, Inc.Portable automated teller machineUS5175759 *Nov 20, 1989Dec 29, 1992Metroka Michael PCommunications device with movable element control interfaceUS5185790 *Mar 28, 1991Feb 9, 1993Motorola, Inc.Multiposition detenting hinge apparatusUS5265264 *Dec 23, 1991Nov 23, 1993Motorola, Inc.Convertible half-to-full duplex radio operation selected by batteryUS5276916 *Oct 8, 1991Jan 4, 1994Motorola, Inc.Communication device having a speaker and microphoneUS5335368 *May 29, 1992Aug 2, 1994Nec CorporationPortable radio apparatus having variable impedance matching circuit between antenna and radio circuitUS5574481 *Jan 31, 1994Nov 12, 1996Silitek CorporationDetachable folding keyboard deviceUS5692046 *Nov 7, 1995Nov 25, 1997Motorola, Inc.Foldable telephone handset having transformable hingeUS5732135 *Jul 19, 1996Mar 24, 1998Ericsson Inc.Asymmetric hinged housing configurationUS5857148 *Oct 31, 1995Jan 5, 1999Motorola, Inc.Portable electronic device and method for coupling power theretoUS6141569 *Jan 5, 1999Oct 31, 2000Motorola, Inc.Portable electronic device and method of coupling power theretoEP0518526A1 *May 28, 1992Dec 16, 1992Nec CorporationPortable radio apparatus of foldable typeWO1989012945A1 *May 18, 1989Dec 28, 1989Motorola IncPortable radiotelephone with control switch disablingWO1990005421A1 *Oct 4, 1989May 17, 1990Motorola IncMultipurpose hinge apparatus for foldable telephonesWO1992009163A1 *Nov 14, 1991May 29, 1992Universal Cellular IncPortable telephone housing* Cited by examinerClassifications U.S. Classification379/370, 379/433.11, D14/147, 379/433.1International ClassificationH04M1/02Cooperative ClassificationH04M1/0245, H04M1/0202, H04M1/0214European ClassificationH04M1/02ARotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google