Cordless electrical appliances
First Claim
Patent Images
1. An electrical appliance and base comprising:
- an electrical appliance including a male pin connector;
a base for the appliance, the base including a female socket connector which is arranged to be engaged by the male pin connector when the appliance is placed on the base; and
at least one electrical connection between the male pin and female socket connectors being formed by a leaf spring mounted silver faced contact with a corresponding male pin, the male pin being made, at least in a contact forming region thereof, of copper, the male pin wiping against the silver faced contact during engagement and disengagement of the female socket connector and the male pin connector so that silver from the silver faced contact is transferred to the pin.
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Accused Products
Abstract
A cordless electrical appliance includes a male pin connector which engages vertically with a female socket connector mounted in a base for the appliance. The contacts are arranged such that one of the line or neutral connections makes last and breaks first. This connection includes a silver, copper backed contact mounted on a leaf spring with a corresponding male pin being made of copper and having a thin silver plating at least in a region of contact with the copper backed contact.
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Citations
18 Claims
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1. An electrical appliance and base comprising:
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an electrical appliance including a male pin connector; a base for the appliance, the base including a female socket connector which is arranged to be engaged by the male pin connector when the appliance is placed on the base; and at least one electrical connection between the male pin and female socket connectors being formed by a leaf spring mounted silver faced contact with a corresponding male pin, the male pin being made, at least in a contact forming region thereof, of copper, the male pin wiping against the silver faced contact during engagement and disengagement of the female socket connector and the male pin connector so that silver from the silver faced contact is transferred to the pin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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- 11. An electrical connector comprising a male pin connector and a female socket connector, the socket connector including at least one spring mounted, silver faced contact, and the male pin connector including a corresponding terminal pin which is formed of copper at least in a region thereof adjacent a point of engagement in use with the socket connector contact, the male pin wiping against the socket connector contact during engagement and disengagement of the female socket connector and the male pin connector so that the silver from the socket connector contact is transferred to the pin.
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12. A portable electrical water heating appliance and base comprising:
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a water heating appliance including a thermally sensitive control unit having terminal pins; and a base for receiving the appliance, the base including a female socket connector for receiving the terminal pins, wherein at least one of the terminal pins is formed, in at least a contact forming region thereof, of industrially pure copper, the contact forming region further having a thin silver coating, the female socket connector having a spring mounted silver faced contact for engagement with the contact forming region of the terminal pin, the terminal pin wiping against the silver contact during engagement and disengagement of the female socket connector and the terminal pin so that silver from the contact is transferred to the terminal pin. - View Dependent Claims (13, 14)
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17. An electrical appliance and base comprising:
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an appliance including a thermally sensitive control unit including terminal pins; a base for receiving the appliance, the base including a female socket connector for receiving the terminal pins so that line and neutral connections are made therewith, wherein an arrangement of the pins and base contacts arranged within the base is offset in a direction of engagement and disengagement such that engagement of the respective pins with the respective base contacts is staggered, a connection making last and breaking first being made between a thinly silver coated copper terminal pin and a leaf spring mounted silver faced contact, the terminal pin wiping against the silver contact during engagement and disengagement of the female socket connector and the terminal pin so that silver from the contact is transferred to the terminal pin.
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18. An electrical appliance and base comprising:
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an electrical appliance including a male pin connector; a base for the appliance, the base including a female socket connector which is arranged to be engaged by the male pin connector when the appliance is placed on the base; and at least one electrical connection between the male pin and female socket connectors being formed by a leaf spring mounted copper backed silver contact with a corresponding male pin, the male pin being made, at least in a contact forming region thereof, of copper, the male pin wiping against the silver contact during engagement and disengagement of the female socket connector and the male pin connector so that silver from the contact is transferred to the pin.
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Specification