Plugs, receptacles and hearing aids
First Claim
1. An electrical connection cord having a first plug at one end thereof and a second plug at the other end thereof, said cord having a plurality of conductors joining the plugs, each plug having a plurality of contacts, the contacts of said first plug being connected to said conductors in a first circuit configuration, the contacts of said second plug being connected to said conductors in a second circuit configuration different from said first circuit configuration, the contacts of both said plugs being adapted to be plugged one plug at a time into a single receptacle, whereby an electrical connection to said receptacle may be varied dependent on which of said plugs is plugged into said receptacle.
1 Assignment
0 Petitions
Accused Products
Abstract
A connecting cord has a plug at each end. Either such plug may be plugged into the receptacle of a hearing aid and the other plug may be plugged into an external microphone. The contacts of each plug are connected in a different circuit configuration to the conductors of the cord so that when one plug is plugged into the receptacle, the internal hearing aid microphone is shorted out, and when the other plug is plugged into the receptacle, both microphones operate in parallel. The plug contacts are formed of printed circuit board and each plug has a rocker with a hooked top which engages a slot in the receptacle to prevent the inadvertent movement of the plug out of the receptacle. Other plug internal circuit configurations allow connection of other signalling systems to the hearing aid.
-
Citations
13 Claims
- 1. An electrical connection cord having a first plug at one end thereof and a second plug at the other end thereof, said cord having a plurality of conductors joining the plugs, each plug having a plurality of contacts, the contacts of said first plug being connected to said conductors in a first circuit configuration, the contacts of said second plug being connected to said conductors in a second circuit configuration different from said first circuit configuration, the contacts of both said plugs being adapted to be plugged one plug at a time into a single receptacle, whereby an electrical connection to said receptacle may be varied dependent on which of said plugs is plugged into said receptacle.
-
5. An electrical connection cord and receptacle combination comprising:
-
(a) a receptacle having a plurality of receptacle contacts, (b) an electrical connection cord having a first plug at one end thereof and a second plug at the other end thereof, said cord having a plurality of conductors joining said plugs, each plug having a plurality of contacts, the contacts of said first plug being connected to said conductors in a first circuit configuration, the contacts of said second plug being connected to said conductors in a second circuit configuration different from said first circuit configuration. (c) the contacts of both said plugs being adapted to be plugged one plug at a time into said receptacle, whereby an electrical connection to said receptacle may be varied dependent on which of said plugs is plugged into said receptacle. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
-
Specification