Patent US5880536A successfully refreshed from Google Patents.
Patent US3873915A successfully refreshed from Google Patents.
US3873915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination flashlight and electric circuit tester
Assignee: Individual
•
Filing: 1973-12-28
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Granted: 1975-03-25
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Expires: 1993-12-28
Abstract
Abstract This invention relates to an improved combination circuit tester and portable electrical light comprising an elongated housing having one or more electric cells encased therein for supplying an electric current to an electric two-pole circuit, an electrically operated lamp mounted to one end of the elongated housing and connnected directly to one of the poles, and a pair of testing leads extending outwardly from the opposite end of the housing and connected to the other pole in series with the light.
Inventors
- 👤 John C Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:35
CPC Classifications
F; F21; F21V; F21V33/00; F21V33/008; F21V33/0084; G; G01; G01R; G01R31/00; G01R31/005; G01R31/006; G01R31/50; G01R31/52; G01R31/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
338 words
A combination electrical circuit tester and portable lamp comprising: a. a hollow housing having a light bulb attached within a light reflector fixedly secured at one end of the housing and an attachable cap secured to the opposite end of the housing; b. said housing being of suitable size and adapted to encase at least one electric producing dry cell including a positive pole at one end which contacts the light bulb, and a negative pole at the opposite end positioned toward the opposite end of the housing; c. a resilient spring member positioned between the cap and the nagative pole of the dry cell; d. a pair of electric conductor wires extending outwardly through an opening in the cap member wherein one end of one of the wires extending through the cap is connected to an electric terminal element adapted to engage the negative pole of the dry cell, means for supporting the terminal element on an electric non-conducting member said member positioned on the inner end of the resilient spring member and insulating the terminal element from said spring member, the inner end of the resilient spring member being formed to encircle the non-conducting member for fixedly securing the non-conducting member to the inner end of the resilient spring member; e. the other extended electric conductor wire extending through the cap being fixed directly to the resilient spring member; f. means connecting the said resilient spring member to the positive end of the dry cell; g. separate means associated with each of the electric conductor wires positioned immediately outside the cap and adjacent thereto for disengaging at said position each of said electric conductor wires from the housing, said disengaging means adapted to engage each other for completing the electric circuit to the light bulb; h. clamp means attached to the outer end of the electric conductor wires for clamping the wires to elements through which the electric current from the dry cell will pass when the passage of electric current between the elements is uninterrupted.
Claim 2
Dependent Claim
338 words
A combination electrical circuit tester and portable lamp comprising: a. a hollow housing having a light bulb attached within a light reflector fixedly secured at one end of the housing and an attachable cap secured to the opposite end of the housing; b. said housing being of suitable size and adapted to encase at least one electric producing dry cell including a positive pole at one end which contacts the light bulb, and a negative pole at the opposite end positioned toward the opposite end of the housing; c. a resilient spring member positioned between the cap and the nagative pole of the dry cell; d. a pair of electric conductor wires extending outwardly through an opening in the cap member wherein one end of one of the wires extending through the cap is connected to an electric terminal element adapted to engage the negative pole of the dry cell, means for supporting the terminal element on an electric non-conducting member said member positioned on the inner end of the resilient spring member and insulating the terminal element from said spring member, the inner end of the resilient spring member being formed to encircle the non-conducting member for fixedly securing the non-conducting member to the inner end of the resilient spring member; e. the other extended electric conductor wire extending through the cap being fixed directly to the resilient spring member; f. means connecting the said resilient spring member to the positive end of the dry cell; g. separate means associated with each of the electric conductor wires positioned immediately outside the cap and adjacent thereto for disengaging at said position each of said electric conductor wires from the housing, said disengaging means adapted to engage each other for completing the electric circuit to the light bulb; h. clamp means attached to the outer end of the electric conductor wires for clamping the wires to elements through which the electric current from the dry cell will pass when the passage of electric current between the elements is uninterrupted.
References Cited (Backward Citations)
US2899638A
Cited
US1668847A
Cited
US1852190A
Cited
US2302248A
Cited
US2902643A
Cited
US3711768A
Cited
US3775677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |