US3879655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarity indicating battery receptacle
Assignee: Minolta Co Ltd
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Filing: 1973-05-07
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Granted: 1975-04-22
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Expires: 1993-05-07
Abstract
Abstract A battery energized device such as the light measuring or automatic exposure control system of a camera includes a cylindrical housing for holding a battery having an end opening and a removable closure member. A switch is opened by the locked condition of the closure member and is in a closed condition when the closure member is retracted from its closed condition and a diode and an electric lamp are connected in series with the switch across terminals in the housing which engage the battery so that only when the battery is properly oriented in the housing the lamp is momentarily lit as the closure member is moved toward its fully closed position. The switch may include a resilient switch arm which is urged from its normally closed condition by a projection on the closure member as it is turned to its closed position or a pair of contacts on the receptacle are engaged by a conductor on the closure member only before the closure member is in its fully closed position.
Inventors
- 👤 Mitsuru Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:59
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/26; G01; G01R; G01R19/00; G01R19/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
163 words
A battery energized electrical device comprising a battery receiving receptacle having an access opening and including a separable cover member covering the battery positioned in the receptacle and movable in its covering position between an advanced predetermined closed position and a retracted position, a pair of contact elements, one of said contact elements being mounted inside of said receptacle and the other on said cover member, said pair of contact elements engaging the poles of the battery in said receptacle with said cover member in said covering position, a switch including a pair of electric contact members, means connected to said cover member permitting said contact members to be electrically connected in the retracted position and causing said contact members to be opened in the advanced predetermined closed position, and an indicating means for indicating whether said battery is positioned in the receptacle correctly with regard to its polarity, said indicating means being connected in series with said switch between said contact elements.
Claim 2
Dependent Claim
163 words
A battery energized electrical device comprising a battery receiving receptacle having an access opening and including a separable cover member covering the battery positioned in the receptacle and movable in its covering position between an advanced predetermined closed position and a retracted position, a pair of contact elements, one of said contact elements being mounted inside of said receptacle and the other on said cover member, said pair of contact elements engaging the poles of the battery in said receptacle with said cover member in said covering position, a switch including a pair of electric contact members, means connected to said cover member permitting said contact members to be electrically connected in the retracted position and causing said contact members to be opened in the advanced predetermined closed position, and an indicating means for indicating whether said battery is positioned in the receptacle correctly with regard to its polarity, said indicating means being connected in series with said switch between said contact elements.
Claim 3
Dependent Claim
163 words
A battery energized electrical device comprising a battery receiving receptacle having an access opening and including a separable cover member covering the battery positioned in the receptacle and movable in its covering position between an advanced predetermined closed position and a retracted position, a pair of contact elements, one of said contact elements being mounted inside of said receptacle and the other on said cover member, said pair of contact elements engaging the poles of the battery in said receptacle with said cover member in said covering position, a switch including a pair of electric contact members, means connected to said cover member permitting said contact members to be electrically connected in the retracted position and causing said contact members to be opened in the advanced predetermined closed position, and an indicating means for indicating whether said battery is positioned in the receptacle correctly with regard to its polarity, said indicating means being connected in series with said switch between said contact elements.
Claim 4
Dependent Claim
163 words
A battery energized electrical device comprising a battery receiving receptacle having an access opening and including a separable cover member covering the battery positioned in the receptacle and movable in its covering position between an advanced predetermined closed position and a retracted position, a pair of contact elements, one of said contact elements being mounted inside of said receptacle and the other on said cover member, said pair of contact elements engaging the poles of the battery in said receptacle with said cover member in said covering position, a switch including a pair of electric contact members, means connected to said cover member permitting said contact members to be electrically connected in the retracted position and causing said contact members to be opened in the advanced predetermined closed position, and an indicating means for indicating whether said battery is positioned in the receptacle correctly with regard to its polarity, said indicating means being connected in series with said switch between said contact elements.
Claim 5
Dependent Claim
29 words
The device of claim 1 wherein said indicating means includes a diode and an electric lamp, said switch diode and lamp being connected in series betWeen said contact elements.
Claim 6
Dependent Claim
22 words
The device of claim 2 wherein said diode is oriented to be conductive when the battery is properly oriented in said receptacle.
Claim 7
Dependent Claim
72 words
The device of claim 1 wherein said switch includes a switch arm having one of said contact members resiliently urged into engagement with the other of said contact member, and said means connected to said cover including an actuating element located on and movable with the advance of said cover member along a path engaging said switch arm and urging it out of engagement, with the other of said switch contact members.
Claim 8
Dependent Claim
238 words
A battery energized electrical device comprising a battery receiving receptacle having an access opening and including a cover member movable between an advanced predetermined closed position registering with said opening and a retracted position, a pair of contact elements for engaging the poles of a battery positioned in said receptacle in the advanced predetermined position and the retracted position, a switch including a pair of electric contact members, means connected to said cover permitting said contact members to be electrically connected in the retracted position and causing said contact members to be opened in the advanced predetermined closed position, and a polarity responsive electrically energized indicating means connected in series with said switch between said contact elements, said switch including a switch arm having one of said contact members resiliently urged into engagement with the other of said contact member, and said means connected to said cover including an actuating element located on and movable with the advance of said cover member along a path engaging said switch arm and urging it out of engagement with the other of said switch contact members, said receptacle comprising a cylindrical housing open at its top and having one of said contact elements centrally positioned in its bottom wall and said cover member carrying the other of said contact elements on the inside face thereof and said actuating element comprising a projection depending from and eccentrically located on said cover member.
Claim 9
Dependent Claim
238 words
A battery energized electrical device comprising a battery receiving receptacle having an access opening and including a cover member movable between an advanced predetermined closed position registering with said opening and a retracted position, a pair of contact elements for engaging the poles of a battery positioned in said receptacle in the advanced predetermined position and the retracted position, a switch including a pair of electric contact members, means connected to said cover permitting said contact members to be electrically connected in the retracted position and causing said contact members to be opened in the advanced predetermined closed position, and a polarity responsive electrically energized indicating means connected in series with said switch between said contact elements, said switch including a switch arm having one of said contact members resiliently urged into engagement with the other of said contact member, and said means connected to said cover including an actuating element located on and movable with the advance of said cover member along a path engaging said switch arm and urging it out of engagement with the other of said switch contact members, said receptacle comprising a cylindrical housing open at its top and having one of said contact elements centrally positioned in its bottom wall and said cover member carrying the other of said contact elements on the inside face thereof and said actuating element comprising a projection depending from and eccentrically located on said cover member.
Claim 10
Dependent Claim
215 words
A battery energized electrical device comprising a battery receiving receptacle having an access opening and including a cover member movable between an advanced predetermined closed position registering with said opening and a retracted position, a pair of contact elements for engaging the poles of a battery positioned in said receptacle in the advanced predetermined position and the retracted position, a switch including a pair of electric contact members, means connected to said cover permitting said contact members to be electrically connected in the retracted position and causing said contact members to be opened in the advanced predetermined closed position, and a polarity responsive electrically energized indicating means connected in series with said switch between said contact elements, said receptacle comprising a cylindrical housing, said cover member being rotatable in said housing between its advanced and retracted positions and said switch first and second contact members being located on the inside face of said receptacle and including a third peripherally extending contact member mounted on said cover member and movable therewith out of engagement with at least one of said pair of first and second contact members when said cover member is in its advanced position and in engagement with both of said pair of contact members when said cover member is in a retracted position.
Claim 11
Dependent Claim
215 words
A battery energized electrical device comprising a battery receiving receptacle having an access opening and including a cover member movable between an advanced predetermined closed position registering with said opening and a retracted position, a pair of contact elements for engaging the poles of a battery positioned in said receptacle in the advanced predetermined position and the retracted position, a switch including a pair of electric contact members, means connected to said cover permitting said contact members to be electrically connected in the retracted position and causing said contact members to be opened in the advanced predetermined closed position, and a polarity responsive electrically energized indicating means connected in series with said switch between said contact elements, said receptacle comprising a cylindrical housing, said cover member being rotatable in said housing between its advanced and retracted positions and said switch first and second contact members being located on the inside face of said receptacle and including a third peripherally extending contact member mounted on said cover member and movable therewith out of engagement with at least one of said pair of first and second contact members when said cover member is in its advanced position and in engagement with both of said pair of contact members when said cover member is in a retracted position.
Claim 12
Dependent Claim
52 words
The device of claim 6 wherein said receptacle has a bayonet slot formed in the cylindrical wall thereof and said cover member includes a depending cylindrical skirt wall slideably and axially telescoping said receptacle and having a projection engaging said bayonet slot, said third contact member being positioned on said skirt wall.
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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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |