초록 ▼

A cooking vessel is provided with a whistle knob which has an internal passage for carrying steam from a hole in the cooking vessel to a rotary whistle chamber molded in the knob. The whistle chamber is displaced from and eccentric to the knob axis. The lower surface of the knob has a cavity which s

A cooking vessel is provided with a whistle knob which has an internal passage for carrying steam from a hole in the cooking vessel to a rotary whistle chamber molded in the knob. The whistle chamber is displaced from and eccentric to the knob axis. The lower surface of the knob has a cavity which surrounds the knob axis, providing a steam passage inlet which is in communication with the hole in the cooking vessel regardless of the angular position of the knob relative to its axis. From the inlet cavity, steam passes through a vertically extending passage, a plenum chamber and a horizontally extending passage which introduces steam into the whistle chamber at an angle which causes an audible whistle and rotary movement of the steam. The whistle chamber has an outlet which may be opened and closed by rotational movement of a valve ring which extends circumferentially around the knob. The body of the knob is formed of two parts which are separable to permit removal of the valve ring and cleaning of the internal portions of the knob. A temperature indicating device may be incorporated in the knob.

대표청구항 ▼

A whistling knob for a cooking vessel, said knob having a body with a surface for engaging a wall of a cooking vessel, a whistle chamber in said knob, said whistle chamber having an axis, passage means formed in said knob and extending from said surface and has a convergent portion with a planar bot

A whistling knob for a cooking vessel, said knob having a body with a surface for engaging a wall of a cooking vessel, a whistle chamber in said knob, said whistle chamber having an axis, passage means formed in said knob and extending from said surface and has a convergent portion with a planar bottom to said whistle chamber, said passage means being oriented to introduce steam into said whistle chamber at an angle from an inlet normal to said planar bottom and in direct communication with said passage, which causes an audible whistle and rotary movement of steam in the whistle chamber, said rotary movement being in a direction which is circumferential with respect to said axis, said whistle chamber having outlet means for releasing steam to the atmosphere.