초록 ▼

A heater for wet dressings comprising, a case having a base with sidewalls defining a cavity, and an insert connected to the base and defining at least one recess in the cavity to receive the wet dressings. The heater has an electrical heating element in close proximity to the insert recess for heat

A heater for wet dressings comprising, a case having a base with sidewalls defining a cavity, and an insert connected to the base and defining at least one recess in the cavity to receive the wet dressings. The heater has an electrical heating element in close proximity to the insert recess for heating the wet dressings, and the temperature of the heating element is controlled in the desired range of temperature of the wet dressings.

대표청구항 ▼

A heater for wet dressing comprising: a case having a base with sidewalls defining a cavity; an insert within the cavity of said base and defining at least one narrow recess in said insert to receive wet dressings, said recess being capable of being heated; an electrical heating element, electricall

A heater for wet dressing comprising: a case having a base with sidewalls defining a cavity; an insert within the cavity of said base and defining at least one narrow recess in said insert to receive wet dressings, said recess being capable of being heated; an electrical heating element, electrically insulated with respect to said recess and located in close proximity to the insert recess within that portion of said cavity between the insert and the base, for heating the wet dressings; electrical circuit means within said cavity interconnecting said heating element and a source of electric current; and means for controlling the temperature of the heating element in the desired range of temperature of the wet dressings, said controlling means being a part of said electrical circuit means and comprising; first means for controlling current to the heating element and for sensing the temperature associated with the heating element, said first means initially supplying current to the heating element until a first temperature is sensed substantially higher than the desired temperature range of the wet dressings, said first means interrupting current to the heating element at said first sensed temperature, said first means again supplying current to the heating element at a second sensed temperature substantially below the range of desired temperature of the wet dressings, and said first means subsequently interrupting current to the heating element when said first temperature is sensed; and second means for controlling current to the heating element and for sensing the temperature associated with the heating element, said second means initially supplying current to the heating element until a third temperature is sensed higher than the desired temperature range of the wet dressings and lower than said first temperature, said second means interrupting current to the heating element at said third sensed temperature, said second means again supplying current to the heating element at a fourth sensed temperature below the range of desired temperature of the wet dressings and higher than said second temperature, and said second means subsequently interrupting current to the heating element when said third temperature is sensed.