Apparatus for intrinsically safe power interface
First Claim
Patent Images
1. An interface assembly for a communication device, the interface assembly comprising:
- a communication device connector;
an accessory connector for mating with the communication device connector, the accessory connector comprising;
a supply pin;
a detect pin;
a ground pin;
the supply pin and the ground pin connecting to the communication device connector prior to the detect pin connecting to the communication device connector when the accessory connector is mated with the communication device connector, and the supply pin and the ground pin disconnecting from the communication device connector after the detect pin disconnects from the communication device connector when the accessory connector is removed from the communication device connector, the disconnection of the detect pin causing power to turn off at the supply pin prior to disconnection of the supply pin thereby preventing sparking.
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Accused Products
Abstract
A connector (100) having multiple contacts (102) includes a supply contact (104), a ground contact (106) and at least one other contact (108) for providing attach/detach detection to an accessory or accessory connector. The supply and ground contacts (104, 106) are longer than the detect contact (108) so that power is connected prior to any of the other contacts and power is removed after any of the other contacts are detached. Logical control circuitry (318) interfaces with the connector (100) to minimize sparks upon detachment from the accessory (304).
29 Citations
7 Claims
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1. An interface assembly for a communication device, the interface assembly comprising:
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a communication device connector;
an accessory connector for mating with the communication device connector, the accessory connector comprising;
a supply pin;
a detect pin;
a ground pin;
the supply pin and the ground pin connecting to the communication device connector prior to the detect pin connecting to the communication device connector when the accessory connector is mated with the communication device connector, and the supply pin and the ground pin disconnecting from the communication device connector after the detect pin disconnects from the communication device connector when the accessory connector is removed from the communication device connector, the disconnection of the detect pin causing power to turn off at the supply pin prior to disconnection of the supply pin thereby preventing sparking. - View Dependent Claims (2, 3, 4)
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5. A connector for interfacing to a communication device, the connector comprising:
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a plurality of contacts formed of pogo pins;
the plurality of contacts including power contacts and at least one other contact; and
the power contacts having a first predetermined length of accommodation and the at least one other contact having a second predetermined length of accommodation shorter than the first; and
the at least one other contact serially detaching from a corresponding mating contact on the communication device prior to the detachment of the power contacts, the detachment of the at least one other contact causing power to turn off at the plurality of power contacts prior to detachment of the plurality of power contacts from the communication device thereby preventing sparking. - View Dependent Claims (6, 7)
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Specification