Clipper blade assembly

• US 5,579,581 A
• Filed: 10/21/1994
• Issued: 12/03/1996
• Est. Priority Date: 10/21/1994
• Status: Expired due to Term

• Current Assignee: Wahl Clipper Corporation
• Original Assignee: Wahl Clipper Corporation
• Inventors: Melton, Scott
• Primary Examiner(s): PAYER, HWEI SIU CHOU
• Application Number:
  US08/327,235
• Time in Patent Office: 774 Days
• Field of Search: 30/93.92, 30/208-211, 30/216-225, 30/228, 30/194, 30/355, 30/353, 30/351
• US Class Current: 30/223
• CPC Class Codes: B26B 19/063 Movable or adjustable cutting head
• CPC Class Codes: B26B 19/3813 Attachments
• CPC Class Codes: B26B 19/3846 Blades; Cutters B26B19/044, B26B19/141 take precedence

Abstract

A clipper blade for use in a blade assembly of a hair clipper, the blade assembly having a fixed blade and a moving blade reciprocating relative to the fixed blade, the clipper blade includes a web portion having a first edge, and a second edge, a plurality of teeth on at least one of the first and second edges, at least one blade assembly engagement formation being located on the web portion closer to one of the first and second edges than the other of the edges, so that when a pair of blades each having the web portion and the at least one engagement formation are inserted into the blade assembly in reversed opposing relationship to each other, one blade of the pair being the fixed blade edge and having a plurality of teeth on the first edge, and the other blade of the pair being the moving blade and having a plurality of teeth on the second edge, the moving blade is laterally offset relative to the fixed blade.

Claims

1. A blade assembly for use with a hair clipper, the clipper including a handle with a drive end, a drive member extending from the drive end, and a first coupling formation disposed at the drive end, said blade assembly comprising:

a housing having a fixed blade and a moving blade reciprocating relative to said fixed blade, a second coupling formation configured for engaging the first coupling formation, said second coupling formation being configured for accommodating the drive member, said housing also having blade locating means for locating said fixed blade thereon;

said blades being substantially identical, each said blade configured for use as either of said fixed blade and said moving blade, each said blade having a web portion, a first cutting edge and a second cutting edge, said first cutting edge being longer than said second cutting edge, said web portion further including a pair of longitudinal guide slots extending substantially parallel with said cutting edges, said guide slots being disposed closer to said second cutting edge than to said first cutting edge; and

said first cutting edge being configured for application as the fixed blade, and said second cutting edge being configured for application as the moving blade, wherein one of said pair of blades serves as said moving blade by employing said second cutting edge, and the other of said blades serves as said fixed blade by employing said first cutting edge.

2. A blade assembly for use with a hair clipper, the clipper including a handle with a drive end, a drive member extending from the drive end, and a first coupling formation disposed at the drive end, said blade assembly comprising:

a housing having a fixed blade and a moving blade reciprocating relative to said fixed blade, a second coupling formation configured for engaging the first coupling formation, said second coupling formation being configured for accommodating the drive member, said housing also having blade locating means for locating said fixed blade thereon;

said blades being substantially identical, each said blade configured for use as either of said fixed blade and said moving blade, each said blade having a web portion, a first cutting edge and a second cutting edge, said first cutting edge being longer than said second cutting edge; and

said first cutting edge being configured for application as the fixed blade, and said second cutting edge being configured for application as the moving blade, wherein one of said blades serves as said moving blade by employing said second cutting edge, and the other of said blades serves as said fixed blade by employing said first cutting edge.

3. The blade assembly as defined in claim 2 wherein said blades are laterally offset relative to each other.

4. The blade assembly as defined in claim 2 wherein said web portion of each of said blades includes at least one guide slot and at least one locating slot.

5. The blade assembly as defined in claim 2 wherein said web portion includes a pair of longitudinal guide slots extending substantially parallel with said cutting edges, said guide slots being disposed closer to said second cutting edge than to said first cutting edge.

6. The blade assembly as defined in claim 2 wherein said blades are identical to each other.

7. A pair of clipper blades for use in a blade assembly of a hair clipper, the blade assembly having a fixed blade and a moving blade reciprocating relative to the fixed blade, each of said clipper blades being configured for use as either of said fixed blade and said moving blade, each said clipper blade comprising:

a first edge and a second edge;

a web portion disposed between said first edge and said second edge;

a plurality of cutting teeth on each of said edges;

at least one blade assembly engagement formation being located on said web portion closer to one of said edges than the other of said edges, so that when said clipper blades, each having said web portion and said at least one engagement formation are inserted into the blade assembly in reversed opposing relationship to each other, one of said blades being the fixed blade and having a first plurality of cutting teeth, and the other of said blades being the moving blade and having a second plurality of cutting teeth, the moving blade is laterally offset relative to the fixed blade.

8. The clipper blades as defined in claim 7 wherein said first edge is longer than said second edge.

9. The clipper blades as defined in claim 7 further including at least one central slot in each said blade for accommodating a blade driving formation.

10. The clipper blades as defined in claim 7 wherein said blade assembly engagement formation includes at least one guide slot disposed in said web portion.

11. The clipper blades as defined in claim 7 wherein said blade assembly engagement formation includes a pair of longitudinal guide slots extending substantially parallel with said edges, said guide slots being disposed closer to said second edge than to said first edge.

12. The clipper blades as defined in claim 7 wherein at least one of said edges are vertically offset from said web portion.

13. The clipper blades as defined in claim 7 wherein said first plurality of cutting teeth have rounded tips, and said second plurality of cutting teeth have truncated tips.

14. A clipper blade for use in a blade assembly of a hair clipper, the blade assembly having a fixed blade and a moving blade reciprocating relative to the fixed blade, said clipper blade comprising:

a first edge and a second edge, said second edge being longer than said first edge;

a web portion disposed between said first edge and said second edge;

a first plurality of teeth on said first edge; and

a second plurality of teeth on said second edge;

said web portion being vertically offset from at least one of said first and second edges;

at least one blade guide slot in said web portion; and

at least one blade locating slot in said web portion.

15. The clipper blade as defined in claim 14 wherein said at least one blade guide slot and said at least one blade locating slot are located on said web portion closer to one of said edges than the other of said edges, so that when said clipper blade is combined with another such blade to form a pair of blades, and said blades are inserted into the blade assembly in reversed opposing relationship to each other, one blade of said pair being the fixed blade, and the other blade of said pair being the moving blade, the moving blade is laterally offset relative to the fixed blade.