Patents by Inventor Rangpan Wu

Rangpan Wu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12194647
    Abstract: A reciprocating razor blade cartridge having fixed blade and fixed blade support, fixed blade is flexible metal sheet, fixed blade support is basin-shaped and supported by basin opening edge, all sides of fixed blade bent downwards and wrapped on outside of basin wall around fixed blade support and make top surface of fixed blade and side surface close to top surface smoothly transition, inner cutting cavity formed between fixed blade and fixed blade support, fixed blade includes hair inlet holes allow body hair enter inner cutting cavity, inner cutting cavity below fixed blade includes movable blade can reciprocate back and forth relative to fixed blade and cut off body hair, movable blade has cutting teeth for cutting body hair corresponding to hair inlet holes, reciprocating razor blade cartridge includes transmission component passes through bottom of fixed blade support to connect movable blade with power device of electric razor.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: January 14, 2025
    Assignee: LITTLE STONE CERAMIC BLADE (ZHONGSHAN) COMPANY LTD.
    Inventor: Rangpan Wu
  • Patent number: 12115688
    Abstract: A trimmer head for pen-shaped eyebrow trimmer, including a cylindrical trimmer head body, the trimmer head body is provided with a blade, the trimmer head and handle can form an eyebrow trimmer with a pen-shaped structure. The blade is a curved arc-shaped structure, and blade edge at the upper end is arc-shaped; by placing the upper end of blade on upper end face of trimmer head body, the trimmer head can move perpendicular to the skin or inclined at a certain angle with the direction perpendicular to the skin when shaving, combined with the inclined setting of the blade relative to axis L of the trimmer head body to form an inclined cutting angle to ensure sharpness of cutting. To improve the flexibility and controllability of eyebrow trimming, the blade with arc-shaped structure can effectively control the shaving of concave and convex parts, as to accurately trim and shape eyebrows.
    Type: Grant
    Filed: September 18, 2021
    Date of Patent: October 15, 2024
    Assignee: LITTLE STONE CERAMIC BLADE (ZHONGSHAN) COMPANY LTD.
    Inventor: Rangpan Wu
  • Publication number: 20230256633
    Abstract: A rotary shaver cutter mesh structure includes a cutter mesh body with a raised ring shaving track having outer and inner ring side faces, and a track top surface for connecting the faces, outer and inner hair inlet slots separated from each other in the shaving track, the outer hair inlet slots extend from the outer ring side face to the middle of the shaving track, the inner hair inlet slots extend from the inner ring side face to the middle of the shaving track, and outer and inner hair inlet slots distributed in a circumferential direction, the slots are staggered, and outer flared hair guide openings corresponding to the outer hair inlet slots and being used for guiding hair into the outer hair inlet slots are in a turning joint between the outer ring side face and the track top surface.
    Type: Application
    Filed: December 17, 2020
    Publication date: August 17, 2023
    Inventor: Rangpan WU
  • Publication number: 20230166414
    Abstract: A multi-functional small rotary shaving, includes a cutter head cover and a moving cutter assembly. The moving cutter assembly includes moving cutter and support for holding moving cutter, cutter head cover includes cover head and cover body which are integrated up and down, cover head includes cover top and cover wall connected to outer side of cover top, cover top and cover wall enclose to form one cutting cavity for moving cutter to rotate inside, and cover head has multiple hair inlet slots in circumferential direction for communicating inside with outside of cover head; hair inlet slots cross from cover top to cover wall and passes through cover top longitudinally and cover wall transversely at same time, and turning joint between cover top and cover wall has horn-shaped hair guiding openings which correspond to hair inlet slots and which are used for guiding hair into hair inlet slots.
    Type: Application
    Filed: December 17, 2020
    Publication date: June 1, 2023
    Inventor: Rangpan WU
  • Publication number: 20230150155
    Abstract: A reciprocating razor blade cartridge having fixed blade and fixed blade support, fixed blade is flexible metal sheet, fixed blade support is basin-shaped and supported by basin opening edge, all sides of fixed blade bent downwards and wrapped on outside of basin wall around fixed blade support and make top surface of fixed blade and side surface close to top surface smoothly transition, inner cutting cavity formed between fixed blade and fixed blade support, fixed blade includes hair inlet holes allow body hair enter inner cutting cavity, inner cutting cavity below fixed blade includes movable blade can reciprocate back and forth relative to fixed blade and cut off body hair, movable blade has cutting teeth for cutting body hair corresponding to hair inlet holes, reciprocating razor blade cartridge includes transmission component passes through bottom of fixed blade support to connect movable blade with power device of electric razor.
    Type: Application
    Filed: April 30, 2021
    Publication date: May 18, 2023
    Applicant: LITTLE STONE CERAMIC BLADE (ZHONGSHAN) COMPANY LTD.
    Inventor: Rangpan WU
  • Publication number: 20220362955
    Abstract: A trimmer head for pen-shaped eyebrow trimmer, including a cylindrical trimmer head body, the trimmer head body is provided with a blade, the trimmer head and handle can form an eyebrow trimmer with a pen-shaped structure. The blade is a curved arc-shaped structure, and blade edge at the upper end is arc-shaped; by placing the upper end of blade on upper end face of trimmer head body, the trimmer head can move perpendicular to the skin or inclined at a certain angle with the direction perpendicular to the skin when shaving, combined with the inclined setting of the blade relative to axis L of the trimmer head body to form an inclined cutting angle to ensure sharpness of cutting. To improve the flexibility and controllability of eyebrow trimming, the blade with arc-shaped structure can effectively control the shaving of concave and convex parts, as to accurately trim and shape eyebrows.
    Type: Application
    Filed: September 18, 2021
    Publication date: November 17, 2022
    Applicant: LITTLE STONE CERAMIC BLADE (ZHONGSHAN) COMPANY LTD.
    Inventor: Rangpan WU
  • Patent number: 10857686
    Abstract: A reciprocating electric razor head includes a fixed blade and a fixed blade support for supporting and fixing the fixed blade. The fixed blade is provided with hair entrance holes for body hair to enter, and an inner side of the fixed blade is provided with a movable blade capable of moving backward and forward in a reciprocating manner relative to the fixed blade to cut off the body hair inside the hair entrance holes, such that the fixed blade obtains a very flat cutting working face contacting the movable blade without the need for additional precision machining.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: December 8, 2020
    Assignee: Little Stone Ceramic Blade (Zhongshan) Company Ltd.
    Inventor: Rangpan Wu
  • Publication number: 20180257248
    Abstract: A reciprocating electric razor head includes a fixed blade and a fixed blade support for supporting and fixing the fixed blade. The fixed blade is provided with hair entrance holes for body hair to enter, and an inner side of the fixed blade is provided with a movable blade capable of moving backward and forward in a reciprocating manner relative to the fixed blade to cut off the body hair inside the hair entrance holes, such that the fixed blade obtains a very flat cutting working face contacting the movable blade without the need for additional precision machining.
    Type: Application
    Filed: May 14, 2018
    Publication date: September 13, 2018
    Inventor: Rangpan Wu