|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||G08B-003/00 A47J-027/36.06 A47J-027/56|
|미국특허분류(USC)||116/67R ; 99/342 ; 126/388|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 3 인용 특허 : 1|
A lid knob for a pressure cooker contains a whistle which informs the user when boiling has occurred. The lid knob is designed so that the whistle hole of the knob may be rotated into alignment with the steam hole of the lid of the pressure cooker during initial heating and then rotated out of alignment with the steam hole once boiling has occurred. The lid knob is simple in structure and is easy to disassemble for cleaning.
A lid knob for a pressure cooker, comprising a thumb which is composed of a middle shaft secured to a female tube, a middle wall, said middle shaft and said middle wall defining a space holding a spring, and a skirt defining an outer circumference of said thumb; a dish-shaped stand which is centrally provided with a sleeve for receiving the middle shaft and the spring, said stand defining a hole in a circumferential portion thereof, said stand having a downwardly extending stopper; a guide plate which is centrally provided with a sleeve for receiving an ...