Cutlery – Cutting tools – Plural cooperating blades
Reexamination Certificate
1999-09-01
2001-11-13
Ashley, Boyer (Department: 3724)
Cutlery
Cutting tools
Plural cooperating blades
C030S034100, C030S210000, C030S216000, C030S241000, C030S228000
Reexamination Certificate
active
06314648
ABSTRACT:
TECHNICAL FIELD
The present invention relates to grooming devices and more particularly to a dual blade hair clipper system that includes a motor housing, an independently powered edger unit, an independently powered taper unit, a power cord directing assembly, a three-position on/off switch, and a motor cooling system; the motor housing being sized to provide a handle graspable by a hand of a user; the independently powered edger unit including an edger unit drive motor housed within the motor housing and an edger blade assembly, powered by the edger unit drive motor, provided at one end of the motor housing; the independently powered taper unit including a taper unit drive motor housed within the motor housing and an adjustable taper blade assembly, powered by the taper unit drive motor, provided at an opposite end of the motor housing; the power cord directing assembly including a power cord extending out from a side surface of the motor housing midway between the edger blade assembly and the taper blade assembly and two cord securing clips, one of the two cord securing clips being provided on either side of a power cord motor housing exit point; each cord securing clip having a lateral insertion opening through which a section of the power cord is snap fit to form a connection between the section of power cord and the cord securing clip; the three-position on/off switch being wired in controlling connection with the taper unit drive motor and the edger unit drive motor such that in a first switch position the taper unit drive motor is on, in a second switch position the edger unit drive motor is on, and in a third switch position both the taper unit drive motor and the edger unit drive motor are off; the motor cooling system including a fan assembly positioned within the motor housing and in air flow connection with a number of air vent openings formed through the motor housing such that operation of the fan assembly causes air to flow into, through and out of the motor housing; the air vent openings being positioned on the motor housing such that air flow is directed onto the edger unit drive motor and the taper unit drive motor; the fan assembly being in controlled connection with the three-position switch such that the fan assembly operates when the three-position switch is in the first and second switch positions.
BACKGROUND ART
Cutting hair can require the use of both taper clippers and edger clippers for performing different cutting and shaping procedures on a client's hair. The hairstylist is, therefore, required to switch back and forth between two separate clipper devices which can require walking back and forth to a counter top or the like and can break the stylist's concentration. It would be a benefit, therefore, to have a clipper unit that included both edger blades on one end and taper blades on the other end that allowed the stylist to rapidly switch operation of the clipper device between the two sets of blades. In addition, because the heat generated by operating the clipper unit drive motor can be uncomfortable for the stylist and the client, it would be a further benefit to have a dual blade clipper unit that included two separate drive motors, one for each set of clipping blades, to allow heat generated in one drive motor to dissipate while the stylist is using the clipper blades driven by the other drive motor. It would also be a benefit to have a drive motor cooling system to further reduce the heat generated by operation of the drive motors.
GENERAL SUMMARY DISCUSSION OF INVENTION
It is thus an object of the invention to provide a dual blade hair clipper system that includes a motor housing, an independently powered edger unit, an independently powered taper unit, a power cord directing assembly, a three-position on/off switch, and a motor cooling system; the motor housing being sized to provide a handle graspable by a hand of a user; the independently powered edger unit including an edger unit drive motor housed within the motor housing and an edger blade assembly, powered by the edger unit drive motor, provided at one end of the motor housing; the independently powered taper unit including a taper unit drive motor housed within the motor housing and an adjustable taper blade assembly, powered by the taper unit drive motor, provided at an opposite end of the motor housing; the power cord directing assembly including a power cord extending out from a side surface of the motor housing midway between the edger blade assembly and the taper blade assembly and two cord securing clips, one of the two cord securing clips being provided on either side of a power cord motor housing exit point; each cord securing clip having a lateral insertion opening through which a section of the power cord is snap fit to form a connection between the section of power cord and the cord securing clip; the three-position on/off switch being wired in controlling connection with the taper unit drive motor and the edger unit drive motor such that in a first switch position the taper unit drive motor is on, in a second switch position the edger unit drive motor is on, and in a third switch position both the taper unit drive motor and the edger unit drive motor are off; the motor cooling system including a fan assembly positioned within the motor housing and in air flow connection with a number of air vent openings formed through the motor housing such that operation of the fan assembly causes air to flow into, through and out of the motor housing; the air vent openings being positioned on the motor housing such that air flow is directed onto the edger unit drive motor and the taper unit drive motor; the fan assembly being in controlled connection with the three-position switch such that the fan assembly operates when the three-position switch is in the first and second switch positions.
Accordingly, a dual blade hair clipper system is provided. The dual blade hair clipper system includes a motor housing, an independently powered edger unit, an independently powered taper unit, a power cord directing assembly, a three-position on/off switch, and a motor cooling system; the motor housing being sized to provide a handle graspable by a hand of a user; the independently powered edger unit including an edger unit drive motor housed within the motor housing and an edger blade assembly, powered by the edger unit drive motor, provided at one end of the motor housing; the independently powered taper unit including a taper unit drive motor housed within the motor housing and an adjustable taper blade assembly, powered by the taper unit drive motor, provided at an opposite end of the motor housing; the power cord directing assembly including a power cord extending out from a side surface of the motor housing midway between the edger blade assembly and the taper blade assembly and two cord securing clips, one of the two cord securing clips being provided on either side of a power cord motor housing exit point; each cord securing clip having a lateral insertion opening through which a section of the power cord is snap fit to form a connection between the section of power cord and the cord securing clip; the three-position on/off switch being wired in controlling connection with the taper unit drive motor and the edger unit drive motor such that in a first switch position the taper unit drive motor is on, in a second switch position the edger unit drive motor is on, and in a third switch position both the taper unit drive motor and the edger unit drive motor are off; the motor cooling system including a fan assembly positioned within the motor housing and in air flow connection with a number of air vent openings formed through the motor housing such that operation of the fan assembly causes air to flow into, through and out of the motor housing; the air vent openings being positioned on the motor housing such that air flow is directed onto the edger unit drive motor and the taper unit drive motor; the fan assembly being in controlled connection with the three-position switch such tha
Ashley Boyer
Breaux Joseph N.
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