IP Library Granted Patent US 12,623,364
Granted Patent B2
US 12,623,364 · App. 18/774,719 · Granted May 12, 2026

Handle assembly and cartridge, and razor including same

Inventors: Sung Hee Son (Seoul, KR); Jae Joon Lee (Seoul, KR)
Assignee: Dorco Co., Ltd.
B26B21/14B26B21/4012B26B21/4018B26B21/08B26B21/225B26B21/52B26B21/521
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Quick Facts
Patent No.
US 12,623,364
App. No.
18/774,719
Granted
May 12, 2026
Kind
B2
Abstract

A cartridge may include at least one blade, and a frame supporting the at least one blade to expose the at least one blade at a front and configured to receive the at least one blade in a longitudinal direction. The cartridge may also include a first guard member disposed in front of the at least one blade and configured to align hair entering the at least one blade, and a second guard member disposed in front of the first guard member. The cartridge may further include an opening formed between the first and second guard members and configured to penetrate the frame in a direction from the front to a rear. A width of the opening in a lateral direction perpendicular to the longitudinal direction may be greater than a half of a width in a lateral direction defined by all of the at least one blade.

Claims (28)

1 . A cartridge configured to be coupled to a handle assembly and rotatable with respect to the handle assembly, the cartridge comprising:

one or more blades;

a frame configured to support and expose the one or more blades at an upper portion of the frame and, the frame configured to receive the one or more blades in a longitudinal direction;

a first guard member positioned on the upper portion of the frame, the first guard member positioned in front of the one or more blades and spaced apart from all of the one or more blades;

a second guard member positioned in front of the first guard member;

a first opening positioned between the first guard member and the second guard member on the upper portion of the frame and extending through the frame from the upper portion of the frame to a lower portion of the frame; and

a protrusion formed at the lower portion of the frame, and

wherein:

the one or more blades, a second opening, the first guard member, the first opening, and the second guard member are positioned sequentially as listed on the upper portion of the frame in a lateral direction perpendicular to the longitudinal direction,

a width of the first opening, exposed when viewed from the upper portion of the frame, in the lateral direction is greater than a width of the first guard member in the lateral direction,

the width of the first opening in the lateral direction is greater than a width of the second opening in the lateral direction,

the first guard member and the second guard member are both exposed at the upper portion of the frame and directly contact at least one of skin or hair during shaving,

the second guard member is immovably fixed to the frame,

a width of the first guard member in the longitudinal direction is greater than a width of the first opening in the longitudinal direction, and

at least a portion of the protrusion is disposed to overlap in the lateral direction with at least a portion of the first opening when viewed from the upper portion of the frame.

2 . The cartridge of claim 1 , wherein the cartridge further

comprises: a top cap disposed behind the one or more blades, and

wherein the width of the first opening in the lateral direction is greater than a width of the top cap in the lateral direction.

3 . The cartridge of claim 2 , wherein the one or more blades comprise at least five blades disposed between the top cap and the first guard member.

4 . The cartridge of claim 2 , wherein all of the one or more blades are disposed between the top cap and the first guard member.

5 . The cartridge of claim 1 , wherein the cartridge further comprises:

the second opening positioned between a foremost blade of the one or more blades and the first guard member.

6 . The cartridge of claim 1 , wherein a pivot axis overlaps the first opening when viewed from the upper portion of the frame.

7 . The cartridge of claim 1 , wherein a portion of the protrusion overlapping at least the portion of the first opening in the lateral direction is spaced apart from a front end of the first opening in a direction from the upper portion to the lower portion of the frame.

8 . The cartridge of claim 1 , wherein a bottom surface of the protrusion is configured to contact with a portion of the handle assembly.

9 . The cartridge of claim 1 , wherein a protruding end of the protrusion is the lowest point on the lower portion of the frame.

10 . The cartridge of claim 1 , wherein a top surface of the protrusion extending from the lower portion of the frame is flat, wherein a bottom surface of the protrusion is angled relative to the top surface, and wherein the bottom surface is curved.

11 . The cartridge of claim 1 , wherein the first opening is configured to enable skin to protrude and enable at least a portion of hair to stand upright.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 26, 2024
From: SON, SUNG HEE; LEE, JAE JOON
To: DORCO CO., LTD.
Reel/Frame 068177/0685 →
Priority Claims (1)
KR 10-2015-0162937 · Nov 20, 2015 · national
Continuity (4)
Continuation 18057686 · Nov 21, 2022
Continuation 15983677 · May 18, 2018
Continuation PCTKR2015012521 · Nov 20, 2015
Related Publication 20240367331A1 · Nov 7, 2024
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