Self hair cutting device

• US 4,979,303 A
• Filed: 02/21/1989
• Issued: 12/25/1990
• Est. Priority Date: 02/21/1989
• Status: Expired due to Fees

• Current Assignee: Xiaowen S. Han
• Original Assignee: Xiaowen S. Han
• Inventors: Han, Xiaowen S.
• Primary Examiner(s): Phan, Hien H.
• Assistant Examiner(s): FRIDIE JR, WILLMON
• Application Number:
  US07/312,206
• Time in Patent Office: 672 Days
• Field of Search: 30/210, 30/216, 30/228, 30/194, 30/218, 30/219, 30/220
• US Class Current: 30/210
• CPC Class Codes: B26B 19/06 involving co-operating cutting elements both of which have shearing teeth
• CPC Class Codes: B26B 19/20 with provision for shearing hair of preselected or variable length

Abstract

An electrical motor operated clipper comprises a pair of longitudinal blades, wherein a longitudinal movable blade having a rectangular slot on the backward end is tightened to a fixed blade by a machine screw, a locking washer, and a belt-shaped spring. The electrical motor is mounted in a housing. The fixed blade projects from the forward end of the housing. A lever connects the movable blade in the slot to a transmission driven by the output of the motor, and is rotatably mounted in a metal cover which is mounted in the housing. A two-line-teeth comb-attachment can be attached onto the longitudinal blades for guiding the haircut.

Claims

1. An electrical motor operated clipper comprising a pair of longitudinal blades, wherein a longitudinal movable blade having a rectangular slot on the backward end, one bottom end of a lever rotatably mounted in a metal cover riding in said slot, transmission means driven by the output of said motor being operatively connected to the up end of said lever, said transmission means comprising a gear member with two synchronous eccentrices formed on the two sides of said gear member for transforming the rotation motion of said motor into a forward-backward reciprocating motion, and a pair of connecting rods for imparting the reciprocating motion to said lever, guide means (a) mounted in a metal cover for guiding the forward-backward movement of said movable blade, said guide means (a) comprising a pair of parallel surfaces in said metal cover, and a pair of parallel surfaces on the two sides of said lever in sliding contact with said surfaces in said metal cover respectively, a second guide means (b) mounted in said slot for guiding the forward-backward movement of said movable blade, said second guide means (b) comprising a pair of longitudinal, parallel surfaces in said slot on said movable blade, and a pair of parallel surfaces on the two sides of said bottom end of said lever in sliding contact with said surfaces in said slot respectively, said longitudinal movable blade being slidingly tightened to longitudinal fixed blade by an unloosenable fastening means, said fastening means comprising a machine screw, a belt-shaped spring, and a locking washer mounted between said belt-shaped spring and said fixed blade through a longitudinal hole mounted on said movable blade in order to prevent said fastening means from loosening under the vibration.

2. An electrical motor operated clipper comprising a pair of longitudinal blades, wherein a longitudinal movable blade having a rectangular slot on the backward end, one bottom end of a lever rotatably mounted in a metal cover riding in said slot, transmission means driven by the output of said motor being operatively connected to the up end of said lever, said transmission means comprising a gear member with two synchronous eccentrices formed on the two sides of said gear member for transforming the rotation motion of said motor into a forward-backward reciprocating motion, and a pair of connecting rods for imparting the reciprocating motion to said lever, a two-line-teeth comb-attachment being able to be attached onto the longitudinal blades when it is needed, said two-line-teeth comb-attachment comprising a longitudinal base piece from which two lines of teeth project out, fastening means comprising a block piece mounted on the forward end of said base piece to block the forward end of said fixed blade, a clip piece formed on the backward end of said base piece, a groove formed on the bottom of the forward end of housing receiving said clip piece therein.