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US4303962A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrical contact arrangement for a battery-operated instrument

Assignee: Gebrueder Junghans GmbH
•
Filing: 1979-08-22
•
Granted: 1981-12-01
•
Expires: 1999-08-22
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Abstract

Abstract A contact arrangement for a battery-operated instrument, especially a battery-operated clock, having a housing made of synthetic material. Two contact elements are provided for making connection between the two terminals of a battery and two respective paths of a circuit board. One of the contact elements includes a bus portion fastened to the housing, and a pair of legs. A first leg makes contact with one terminal of the battery and the second leg makes contact with a path of the circuit board. The second leg is designed in the form of a knife-edge contact, one portion thereof bearing against a wall of the housing, and another portion thereof bearing against the circuit board. The second leg thus holds the circuit board in its inserted position by mechanical force. The contact element further includes a third leg which electrically contacts as well as mechanically clamps a small bulb when the latter is inserted into the housing.

Inventors

  • 👤 Robert Wolber
  • 👤 Roland Maurer
  • 👤 Peter Jesse

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 10:57
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/008

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 139 words
A contact arrangement in a battery-powered instrument of the type comprising a housing made of synthetic material and including at least one wall, a circuit board disposed within said housing parallel to said wall, electric light bulb means including a screw threaded socket secured within said housing, and a recess within said housing for receiving a battery, said contact arrangement comprising a bus portion fastened to said housing, said bus portion having at one end a first leg with means for making contact with a terminal of a battery to be seated in said recess, said bus portion having at another end a second leg having a knife contact in contact with a circuit path on said circuit board, said bus portion including a third leg contacting said threaded bulb socket under spring action to establish electrical connection therewith.
Claim 2
Dependent Claim 139 words
A contact arrangement in a battery-powered instrument of the type comprising a housing made of synthetic material and including at least one wall, a circuit board disposed within said housing parallel to said wall, electric light bulb means including a screw threaded socket secured within said housing, and a recess within said housing for receiving a battery, said contact arrangement comprising a bus portion fastened to said housing, said bus portion having at one end a first leg with means for making contact with a terminal of a battery to be seated in said recess, said bus portion having at another end a second leg having a knife contact in contact with a circuit path on said circuit board, said bus portion including a third leg contacting said threaded bulb socket under spring action to establish electrical connection therewith.
Claim 3
Dependent Claim 28 words
A contact arrangement according to claim 1, wherein said third leg engages the screw threads of said bulb socket in a manner retaining said socket in said housing.
Claim 4
Dependent Claim 34 words
Apparatus according to claim 2, wherein said bus portion is flat, the third leg arranged within the same plane as the bus portion and including an outer free end which engages said bulb means.
Claim 5
Dependent Claim 31 words
A contact arrangement according to claim 2, wherein said third leg extends transverse relative to the longitudinal direction of said bus portion and in a direction away from said battery recess.
Claim 6
Dependent Claim 15 words
A contact arrangement according to claim 4, wherein said first and second legs are S-shaped.

References Cited (Backward Citations)

US2875320A Cited
US3911663A Cited
US4068464A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-11-30 1985-06-01 1985-12-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-11-30 1989-06-01 1989-12-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-11-30 1993-06-01 1993-12-01 $7700.00 Window Closed / Lapsed

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