US3707607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hands-free emergency call box
Assignee: U S Holding Co Inc
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Filing: 1970-08-10
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Granted: 1972-12-26
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Expires: 1990-08-10
Abstract
Abstract An all weather emergency-reporting telephone call box and system is provided. The call box uses a speaker and microphone for voice reception and transmission, respectively. The housing is formed of heavy material in a configuration selected to minimize the opportunity for vandalism. Direct communications access to the emergency station can be gained by the operation of one pushbutton switch which operates equipment preparing the system for hands-free operation.
Inventors
- 👤 Willis C Reddick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:53
CPC Classifications
G; G08; G08B; G08B25/00; G08B25/12; H; H04; H04M; H04M1/00; H04M1/02; H04M1/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
231 words
A hands-free emergency call box and circuit comprising: a housing for communication circuits, a face plate fastened securely to said housing, said face plate and housing providing an internal mounting space, means supporting electronic circuits within said internal mounting space, means providing support for a microphone, a push button assembly and a loudspeaker within the housing, switching means responsive to operation of said push button to complete electrical connections between said microphone, said loudspeaker, and said electronic circuits, an opening in said face plate to permit acoustical coupling into the microphone, a microphone mount for supporting the microphone, means fastening said microphone mount to said face plate in a position providing an offset between an axis through said opening and an axis perpendicular through the center of the face of said microphone, said offset affording protection against inclement weather conditions and against vandalism to said microphone, a plurality of openings grouped around a common center in said face plate to permit acoustical coupling from the loudspeaker, means mounting said loudspeaker behind said openings in a position offset from the common center to afford protection from the weather and from direct attack against the microphone by vandals, and an opening in said face plate into which the top of the push button assembly extends to a position flush with the face plate permitting its operation by hand while affording protection from damage.
Claim 2
Dependent Claim
231 words
A hands-free emergency call box and circuit comprising: a housing for communication circuits, a face plate fastened securely to said housing, said face plate and housing providing an internal mounting space, means supporting electronic circuits within said internal mounting space, means providing support for a microphone, a push button assembly and a loudspeaker within the housing, switching means responsive to operation of said push button to complete electrical connections between said microphone, said loudspeaker, and said electronic circuits, an opening in said face plate to permit acoustical coupling into the microphone, a microphone mount for supporting the microphone, means fastening said microphone mount to said face plate in a position providing an offset between an axis through said opening and an axis perpendicular through the center of the face of said microphone, said offset affording protection against inclement weather conditions and against vandalism to said microphone, a plurality of openings grouped around a common center in said face plate to permit acoustical coupling from the loudspeaker, means mounting said loudspeaker behind said openings in a position offset from the common center to afford protection from the weather and from direct attack against the microphone by vandals, and an opening in said face plate into which the top of the push button assembly extends to a position flush with the face plate permitting its operation by hand while affording protection from damage.
Claim 3
Dependent Claim
41 words
A call box and circuit as claimed in claim 1, in which a latching circuit is supplied, and the push button responds to momentary pressure to establish connections through said latching circuit for handsfree operation of said loudspeaker and said microphone.
Claim 4
Dependent Claim
30 words
A call box and circuit as claimed in claim 2, in which means for releasing the connections through the latching circuit is located remotely under control of a central operator.
Claim 5
Dependent Claim
60 words
A call box as claimed in claim 1, in which a switch assembly is mounted behind said face plate at a distance from the push button assembly, linkage means is provided between the push button assembly and the switch assembly, and said linkage means includes means for operating the switch assembly in response to operation of said push button assembly.
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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |