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US4875152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical tap switch
Assignee: Individual
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Filing: 1988-03-16
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Granted: 1989-10-17
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Expires: 2008-03-16
Abstract
Abstract An electrical tap switch is provided that allows a user to control two power outlets. In one embodiment the tap switch is used in-line between one extension cord and two additional ones. In another embodiment the tap switch is plugged directly into a wall receptacle and is permanently secured using a screw mechanism. An indicator is used to display the on-off status of the tap switch. A bar graph current indicator is provided that displays the total current drawn by all loads.
Inventors
- 👤 William H. Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:56
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/665; H01R13/6691; G; G01; G01R; G01R1/00; G01R1/36; G01R19/00; G01R19/22; H01R31/00; H01R31/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
226 words
An electrical tap switch, comprising: (a) a generally rectilinear shell; (b) a power plug mounted directly on said shell; (c) a first power outlet; (d) a second power outlet connected in parallel to said first power outlet; (e) a double pole double throw switch with switch actuator projecting upward from a top surface of said shell, wherein said switch is in series between said plug and said outlets; and, f) an indicator connected in parallel with both said outlets whereby closing said double pole switch energizes both said power outlets, wherein said indicator turns on when said power outlets are energized, wherein said plug projects outward from one end of said shell, said first outlet is integral to the end of said shell, and said second outlet is integral to the top of said shell and is located in close proximity to said first outlet, thereby allowing for in-line use of said electrical tap switch, wherein said indicator comprises a current transformer consisting of a conductor wrapped around a common switched current carrying conductor, a diode to rectify the current from ac to dc; an amplifier to increase the amplitude of the rectified voltage, a driver, and a bar graph display, mounted to the front of said shell and driven by said driver, such that said bar graph displays the total current delivered to said outlets.
Claim 2
Dependent Claim
226 words
An electrical tap switch, comprising: (a) a generally rectilinear shell; (b) a power plug mounted directly on said shell; (c) a first power outlet; (d) a second power outlet connected in parallel to said first power outlet; (e) a double pole double throw switch with switch actuator projecting upward from a top surface of said shell, wherein said switch is in series between said plug and said outlets; and, f) an indicator connected in parallel with both said outlets whereby closing said double pole switch energizes both said power outlets, wherein said indicator turns on when said power outlets are energized, wherein said plug projects outward from one end of said shell, said first outlet is integral to the end of said shell, and said second outlet is integral to the top of said shell and is located in close proximity to said first outlet, thereby allowing for in-line use of said electrical tap switch, wherein said indicator comprises a current transformer consisting of a conductor wrapped around a common switched current carrying conductor, a diode to rectify the current from ac to dc; an amplifier to increase the amplitude of the rectified voltage, a driver, and a bar graph display, mounted to the front of said shell and driven by said driver, such that said bar graph displays the total current delivered to said outlets.
Claim 3
Dependent Claim
257 words
An electrical tap switch, comprising: (a) a generally rectilinear shell; (b) a power plug mounted directly on said shell; (c) a first power outlet; (d) a second power outlet connected in parallel to said first power outlet; (e) a double pole double throw switch with switch actuator projecting upward from a top surface of said shell, wherein said switch is in series between said plug and said outlets; and, (f) an indicator connected in parallel with both said outlets whereby closing said double pole switch energizes both said power outlets, wherein said indicator turns on when said power outlets are energized, wherein said plug projects outward from one end of said shell, said first outlet is integral to the end of said shell, and said second outlet is integral to the top of said shell and is located in close proximity to said first outlet, thereby allowing for in-line use of said electrical tap switch, wherein said indicator comprises a lamp connected in parallel with both of said outlets, and said lamp is located on the top surface of said shell in close proximity to said switch; and further comprises a current transformer consisting of a conductor wrapped around a common switched current carrying conductor, a diode to rectify the current from ac to dc; an amplifier to increase the amplitude of the rectified voltage, a driver, and a bar graph display, mounted to the front of said shell and driven by said driver, such that said bar graph displays the total current delivered to said outlets.
Claim 4
Dependent Claim
257 words
An electrical tap switch, comprising: (a) a generally rectilinear shell; (b) a power plug mounted directly on said shell; (c) a first power outlet; (d) a second power outlet connected in parallel to said first power outlet; (e) a double pole double throw switch with switch actuator projecting upward from a top surface of said shell, wherein said switch is in series between said plug and said outlets; and, (f) an indicator connected in parallel with both said outlets whereby closing said double pole switch energizes both said power outlets, wherein said indicator turns on when said power outlets are energized, wherein said plug projects outward from one end of said shell, said first outlet is integral to the end of said shell, and said second outlet is integral to the top of said shell and is located in close proximity to said first outlet, thereby allowing for in-line use of said electrical tap switch, wherein said indicator comprises a lamp connected in parallel with both of said outlets, and said lamp is located on the top surface of said shell in close proximity to said switch; and further comprises a current transformer consisting of a conductor wrapped around a common switched current carrying conductor, a diode to rectify the current from ac to dc; an amplifier to increase the amplitude of the rectified voltage, a driver, and a bar graph display, mounted to the front of said shell and driven by said driver, such that said bar graph displays the total current delivered to said outlets.
Claim 5
Dependent Claim
235 words
An electrical tap switch, comprising: (a) a generally rectilinear shell; (b) a power plug mounted directly on said shell; (c) a first power outlet; (d) a second power outlet connected in parallel to said first power outlet; (e) a double pole double throw switch with switch actuator projecting upward from a top surface of said shell, wherein said switch is in series between said plug and said outlets; and, (f) an indicator connected in parallel with both said outlets whereby closing said double pole switch energizes both said power outlets, wherein said indicator turns on when said power outlets are energized, wherein said plug projects downward from the bottom of said shell, said first outlet is integral to the end of said shell, and said second outlet is integral to the front of said shell and is located in close proximity to said first outlet, thereby allowing for outlet plate mounting of said electrical tap switch, wherein said indicator comprises a current transformer consisting of a conductor wrapped around a common switched current carrying conductor, a diode to rectify the current from ac to dc; an amplifier to increase the amplitude of the rectified voltage, a driver, and a bar graph display, mounted to the front of said shell and to the right of said second outlet, and driven by said driver, such that said bar graph displays the total current delivered to said outlets.
Claim 6
Dependent Claim
235 words
An electrical tap switch, comprising: (a) a generally rectilinear shell; (b) a power plug mounted directly on said shell; (c) a first power outlet; (d) a second power outlet connected in parallel to said first power outlet; (e) a double pole double throw switch with switch actuator projecting upward from a top surface of said shell, wherein said switch is in series between said plug and said outlets; and, (f) an indicator connected in parallel with both said outlets whereby closing said double pole switch energizes both said power outlets, wherein said indicator turns on when said power outlets are energized, wherein said plug projects downward from the bottom of said shell, said first outlet is integral to the end of said shell, and said second outlet is integral to the front of said shell and is located in close proximity to said first outlet, thereby allowing for outlet plate mounting of said electrical tap switch, wherein said indicator comprises a current transformer consisting of a conductor wrapped around a common switched current carrying conductor, a diode to rectify the current from ac to dc; an amplifier to increase the amplitude of the rectified voltage, a driver, and a bar graph display, mounted to the front of said shell and to the right of said second outlet, and driven by said driver, such that said bar graph displays the total current delivered to said outlets.
Claim 7
Dependent Claim
266 words
An electrical tap switch, comprising: (a) a generally rectilinear shell; (b) a power plug mounted directly on said shell; (c) a first power outlet; (d) a second power outlet connected in parallel to said first power outlet; (e) a double pole double throw switch with switch actuator projecting upward from a top surface of said shell, wherein said switch is in series between said plug and said outlets; and, (f) an indicator connected in parallel with both said outlets whereby closing said double pole switch energizes both said power outlets, wherein said indicator turns on when said power outlets are energized, wherein said plug projects downward from the bottom of said shell, said first outlet is integral to the end of said shell, and said second outlet is integral to the front of said shell and is located in close proximity to said first outlet, thereby allowing for outlet plate mounting of said electrical tap switch, wherein said indicator comprises a lamp connected in parallel with both of said outlets, and said lamp is located on the top surface of said shell in close proximity to said switch; and further comprises a current transformer consisting of a conductor wrapped around a common switched current carrying conductor, a diode to rectify the current from ac to dc; an amplifier to increase the amplitude of the rectified voltage, a driver, and a bar graph display, mounted to the front of said shell and to the right of said second outlet, and driven by said driver, such that said bar graph displays the total current delivered to said outlets.
Claim 8
Dependent Claim
266 words
An electrical tap switch, comprising: (a) a generally rectilinear shell; (b) a power plug mounted directly on said shell; (c) a first power outlet; (d) a second power outlet connected in parallel to said first power outlet; (e) a double pole double throw switch with switch actuator projecting upward from a top surface of said shell, wherein said switch is in series between said plug and said outlets; and, (f) an indicator connected in parallel with both said outlets whereby closing said double pole switch energizes both said power outlets, wherein said indicator turns on when said power outlets are energized, wherein said plug projects downward from the bottom of said shell, said first outlet is integral to the end of said shell, and said second outlet is integral to the front of said shell and is located in close proximity to said first outlet, thereby allowing for outlet plate mounting of said electrical tap switch, wherein said indicator comprises a lamp connected in parallel with both of said outlets, and said lamp is located on the top surface of said shell in close proximity to said switch; and further comprises a current transformer consisting of a conductor wrapped around a common switched current carrying conductor, a diode to rectify the current from ac to dc; an amplifier to increase the amplitude of the rectified voltage, a driver, and a bar graph display, mounted to the front of said shell and to the right of said second outlet, and driven by said driver, such that said bar graph displays the total current delivered to said outlets.
References Cited (Backward Citations)
US1935771A
Cited
US2696607A
Cited
US3530337A
Cited
US3924914A
Cited
US4404461A
Cited
US4659161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-16 | 1993-04-17 | 1993-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-16 | 1997-04-17 | 1997-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-16 | 2001-04-17 | 2001-10-17 | $7700.00 | Window Closed / Lapsed |