Hair-clipping device and cutter-member assembly for such a device

Patent metadata

Field	Value
Publication number	US-9610695-B2
Application number	US-72268505-A
Country	US
Kind code	B2
Filing date	Dec 19, 2005
Priority date	Jan 3, 2005
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

A hair-clipping device comprises a stationary cutter member ( 2; 52; 102; 152; 202; 252; 302; 352 ), at least one movable cutter member ( 7; 57; 407; 457 ), and a drive ( 9, 14, 15; 465 ) coupled to the movable cutter member ( 7; 57; 407; 457 ) for driving movement of the movable cutter member ( 7; 57; 407; 457 ). The stationary cutter member ( 2; 52; 102; 152; 202; 252; 302; 352 ) has an outer surface ( 3; 53; 103 ), a chamber ( 4 ) bounded by an inner surface ( 5 ) and at least one hair-catching opening ( 6; 56; 406 ) extending from the outer surface ( 3; 53; 103 ) to the inner surface ( 5 ). The movable cutter member ( 7; 57; 407; 457 ) comprises at least one cutting edge ( 8 ), fits in the chamber ( 4 ) with a free, close fit and includes a continuous carrier ( 15; 465 ) oriented in longitudinal direction of the movable cutter member ( 7; 57; 407; 457 ). The cutting edges ( 8 ) are provided on cutters ( 16 ) projecting radially from the carrier ( 15; 465 ). A set of cutter members for such a hair-clipping device is also described.

First claim

The invention claimed is:

1. A hair-clipping device comprising:
a stationary cutter member having outer and inner surfaces, a chamber bounded by the inner surface, a plurality of alternating skin-stretching portions and hair-catching openings extending from the outer surface to the inner surface;
a movable cutter member comprising a carrier oriented in a longitudinal direction and a plurality of alternating recesses and cutters projecting radially from the carrier and each having a cutting edge, the movable cutter member is positioned in the chamber with a free, close fit; and
a drive coupled to the movable cutter member for driving the movable cutter member relative to the stationary cutter member,
wherein the carrier and the cutters are solid and the movable cutter member has a cross-sectional size of 3 mm or less.

2. The hair-clipping device according to claim 1 , wherein the cutting edges are formed integrally with the carrier by the edges of the recesses.

3. The hair-clipping device according to claim 1 , wherein the chamber has a circular cross-section.

4. The hair-clipping device according to claim 1 , wherein the movable cutting member fits in the chamber with a clearance smaller than 50 μm.

5. The hair-clipping device according to claim 1 , wherein each of the plurality of the skin-stretching portions comprises at least one ear radially projecting from the outer surface, transitions from the outer surface to the ears being curved with a center of curvature on the outside of the outer surface, the ears of the plurality of the skin-stretching portions forming a row.

6. The hair-clipping device according to claim 5 , comprising at least two stationary cutter members and corresponding movable cutter members arranged adjacent to each other, each of the plurality of the skin-stretching portions of at least one stationary cutter member comprising at least one ear radially projecting from the outer surface, the ears of the plurality of the skin-stretching portions forming a row extending along at least one of the stationary cutter members, the number of stationary cutter members is larger than the number of rows of ears.

7. The hair-clipping device according to claim 1 , wherein each of the plurality of the skin-stretching portions includes an ear radially projecting from the outer surface, the plurality of ears forming a row extending along the stationary cutter member, the ears of said row being located at least partially within an angular range parallel to space occupied by the at least one hair-catching opening.

8. The hair-clipping device according to claim 1 , further comprising at least two movable cutter members arranged in succession in the longitudinal direction.

9. The hair-clipping device according to claim 8 , wherein the carrier of each of said at least two movable cutter members are longitudinally linked together for transferring longitudinal movement of one of said at least two movable cutter members to another of said at least two movable cutter members.

10. The hair clipping device according to claim 1 , wherein each of the hair-catching openings has a length in the longitudinal direction that is at least sufficient to extend in the longitudinal direction across at least two cutters of the plurality of the cutters.

11. The hair clipping device according to claim 10 , wherein a combined longitudinal length of each of the plurality of the hair-catching openings of the stationary cutter member is at least sufficient to extend in the longitudinal direction across at least 80% of a longitudinal length of the stationary cutter member.

12. The hair clipping device according to claim 11 , wherein each of the plurality of hair-catching openings is in the form of a slit extending across the longitudinal direction and having a plurality of bays projecting circumferentially from the slit, the cutting edges of the stationary cutter member or of at least one of the stationary cutter member extending along said bays.

13. A cutter-member assembly for a hair-clipping device comprising:
a stationary cutter member having outer and inner surfaces, a chamber bounded by the inner surface, and a plurality of alternating skin-stretching portions and hair-catching openings extending from the outer surface to the inner surface; and
a movable cutter member comprising a carrier oriented in a longitudinal direction and a plurality of alternating recesses and cutters projecting radially from the carrier each having at least one cutting edge, the movable cutter member is positioned in the chamber with a free, close fit,
wherein the carrier and the cutters are solid and the movable cutter member has a cross-sectional size of 3 mm or less.

Assignees

• Obermann Wolfgang
• Janny Michael
• Koninklijke Philips Nv

Inventors

• Obermann Wolfgang
• Janny Michael

Classifications

• B26B19/38

  Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards (cutters, cutting heads B26B19/04, B26B19/12, B26B19/14; cleaning or disinfecting devices A45D27/46; drying devices A45D27/48; casings for electric apparatus in general H05K) · CPC title

• B26B21/4018

  Guard elements · CPC title

• B26B19/042 Primary

  Long hair cutters or older types comprising a cutting grid · CPC title

• B26B19/00

  Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers · CPC title

• B26B19/04 Primary

  Cutting heads therefor; Cutters therefor; Securing equipment thereof · CPC title