A - Human Necessities – 45 – D
Patent
A - Human Necessities
45
D
309/51
A45D 20/08 (2006.01) A45D 20/12 (2006.01)
Patent
CA 1138510
III. Abstract: There is disclosed a new and improved hair treat- ment device which comprises a fan for blowing air out of the device against a person's hair, a heater for heating the air before it is blown out of the device, and a means to control the airflow velocity which means is located at the forward end of the conduit for the heated air. Specifically, the airflow velocity control means is a pair of hinged trap doors disposed within the air conduit which are adjustable with in- finite variability between the maximum opening capa- bility of the air outlet in the hair treatment device and the minimum opening. The preferred means for adjusting the opening between the trap doors is a knob disposed on the outside of the air conduit portion of the device which is in operative relationship with a screw in operative relationship with the trap doors. The screw has two oppositely threaded portions, one portion having a right-hand thread and the other portion having a left-hand thread and is inserted in both the trap doors each of which have an opening containing female threads adapted to engage a threaded portion of the adjustment screw. One trap door engages the left-hand thread and the other trap door engages the right-hand thread so that as the screw is turned by the knob, the trap doors rotate in opposite directions about their respective hinges. In oper- ation, the user adjusts the opening by turning the knob while drying, shaping or styling the hair in order to obtain the desired airflow velocity and to obtain either a concentrated, dispersed or inter- mediate airflow.
342891
Gowling Lafleur Henderson Llp
Remington Products Company
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