Patent US4947514A successfully refreshed from Google Patents.
US4947514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal contact for a charging circuit
Assignee: Black and Decker Inc
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Filing: 1989-01-09
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Granted: 1990-08-14
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Expires: 2009-01-09
Abstract
Abstract The present invention is a vacuum cleaner recharging assembly. The assembly includes a vacuum cleaner having a motor, a housing enclosing the motor, a fan driven by the motor for producing a vacuum, and a canister for at least the reception of foreign matter and air drawn into the canister in response to the vacuum produced by the fan. The vacuum cleaner has a power source for powering the motor and electrical wiring interconnecting the motor and the power source. The assembly also includes a charging unit cooperable with the vacuum cleaner for charging the power source. The assembly further includes circuitry for disconnecting the flow of electrical power from the power source to the motor when the vacuum cleaner and the charging unit are operatively engaged to allow optimum charging of the power source.
Inventors
- 👤 Burton E. Gerke, Jr.
- 👤 Michael E. Bitzel
- 👤 Robert Kubicko
- 👤 Charles Z. Krasznai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:30
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/28; A47L9/2889; A47L5/00; A47L5/12; A47L5/22; A47L5/24; A47L9/2836; A47L9/2842; A47L9/2857; A47L9/2868; A47L9/2873; A47L9/2884; Y; Y10; Y10S; Y10S15/00; Y10S15/01
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
251 words
A vacuum cleaner regarding assembly comprising: a vacuum cleaner including a motor, a housing enclosing said motor, a blower driven by said motor for producing a vacuum, a canister for at least the reception of foreign matter and air drawn into said canister in response to the vacuum produced by said blower, a power source for powering said motor, and electrical wiring interconnecting said motor and said power source; a charging unit cooperable with said vacuum cleaner for charging said power source; means for disconnecting the flow of electrical power to said motor when said vacuum cleaner and said charging unit are operatively engaged to allow optimum charging of said power source; a switch connected electrically to said power source and said motor, said switch having a nonoperable position to prevent the flow of electrical power from said power source to said motor and an operable position to allow the flow of electrical power from said power source to said motor, said disconnecting means comprising a pair of contacts having a first position engaging each other for allowing the flow of electrical power between said power source and said motor when said switch is in said operable position; and a protrusion on said charging unit for engaging one of said pair of contacts to move said one of said pair of contacts to a second position disengaging each other for discontinuing the flow of electrical power between said power source and said motor when said switch is in said operable position.
Claim 2
Dependent Claim
251 words
A vacuum cleaner regarding assembly comprising: a vacuum cleaner including a motor, a housing enclosing said motor, a blower driven by said motor for producing a vacuum, a canister for at least the reception of foreign matter and air drawn into said canister in response to the vacuum produced by said blower, a power source for powering said motor, and electrical wiring interconnecting said motor and said power source; a charging unit cooperable with said vacuum cleaner for charging said power source; means for disconnecting the flow of electrical power to said motor when said vacuum cleaner and said charging unit are operatively engaged to allow optimum charging of said power source; a switch connected electrically to said power source and said motor, said switch having a nonoperable position to prevent the flow of electrical power from said power source to said motor and an operable position to allow the flow of electrical power from said power source to said motor, said disconnecting means comprising a pair of contacts having a first position engaging each other for allowing the flow of electrical power between said power source and said motor when said switch is in said operable position; and a protrusion on said charging unit for engaging one of said pair of contacts to move said one of said pair of contacts to a second position disengaging each other for discontinuing the flow of electrical power between said power source and said motor when said switch is in said operable position.
Claim 3
Dependent Claim
34 words
An assembly as set forth in claim 1 wherein said vacuum cleaner includes means forming an aperture in said housing, one of said pair of contacts being disposed within said housing across said aperture.
Claim 4
Dependent Claim
30 words
An assembly as set forth in claim 2 wherein said one of said pair of contacts is pivotally connected at one end and the other end is freely depending therefrom.
Claim 5
Dependent Claim
248 words
A vacuum cleaner recharging assembly comprising: a vacuum cleaner including a motor, a housing enclosing said motor, a blower driven by said motor for producing a vacuum, a canister for at least the reception of foreign matter and air drawn into said canister in response to the vacuum produced by said blower, a power source for powering said motor, and electrical wiring interconnecting said motor and said power source; a charging unit cooperable with said vacuum cleaner for charging said power source; means for disconnecting the flow of electrical power to said motor when said vacuum cleaner and said charging unit are operatively engaged to allow charging of said power source including a pair of contacts having a first position engaging each other for allowing the flow of electrical power between said power source and said motor when said switch is in said operable position, and a protrusion on said charging unit for engaging one of said pair of contacts to move said one of said pair of contacts to a second position disengaging each other for discontinuing the flow of electrical power between said power source and said motor when said switch is in said operable position; and a switch connected electrically to said power source and said motor, said switch having a nonoperable position to prevent the flow of electrical power from said power source to said motor and an operable position to allow the flow of electrical power from said power source to said motor.
Claim 6
Dependent Claim
248 words
A vacuum cleaner recharging assembly comprising: a vacuum cleaner including a motor, a housing enclosing said motor, a blower driven by said motor for producing a vacuum, a canister for at least the reception of foreign matter and air drawn into said canister in response to the vacuum produced by said blower, a power source for powering said motor, and electrical wiring interconnecting said motor and said power source; a charging unit cooperable with said vacuum cleaner for charging said power source; means for disconnecting the flow of electrical power to said motor when said vacuum cleaner and said charging unit are operatively engaged to allow charging of said power source including a pair of contacts having a first position engaging each other for allowing the flow of electrical power between said power source and said motor when said switch is in said operable position, and a protrusion on said charging unit for engaging one of said pair of contacts to move said one of said pair of contacts to a second position disengaging each other for discontinuing the flow of electrical power between said power source and said motor when said switch is in said operable position; and a switch connected electrically to said power source and said motor, said switch having a nonoperable position to prevent the flow of electrical power from said power source to said motor and an operable position to allow the flow of electrical power from said power source to said motor.
Claim 7
Dependent Claim
30 words
An assembly as set forth in claim 4 including means forming an aperture in said housing, one of said pair of contacts being disposed within said housing across said aperture.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |