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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||381/370; 381/371; 381/381|
|§371/§102 date||20060627 (20060627)|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 18 인용 특허 : 3|
In a headphone, accidental winding and retracting is prevented from occurring without requiring complicated operations. The headphone includes housings incorporating an electro-acoustic transducer element, an input cord, one end of which is connected to the electro-acoustic transducer element. A take-up mechanism is incorporated in the housings and energized to wind and retract the input cord into the housings. A ratchet interacts with the take-up mechanism to prevent the winding and retracting of the input cord by the take-up mechanism. A cancellation m...
The invention claimed is: 1. A headphone with a cord take-up device, comprising: a housing incorporating an electro-acoustic transducer element; an input cord, one end of which is connected to said electro-acoustic transducer element; take-up means incorporated in said housing and energized to wind and retract said input cord into said housing; ratchet means interacting with said take-up means and preventing the winding and retracting of said input cord by said take-up means as well as allowing said input cord to be pulled out of said housing; cancellat...