KR20170039818A - Collet for fixing a cutting tool - Google Patents

Collet for fixing a cutting tool Download PDF

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Publication number
KR20170039818A
KR20170039818A KR1020150138754A KR20150138754A KR20170039818A KR 20170039818 A KR20170039818 A KR 20170039818A KR 1020150138754 A KR1020150138754 A KR 1020150138754A KR 20150138754 A KR20150138754 A KR 20150138754A KR 20170039818 A KR20170039818 A KR 20170039818A
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KR
South Korea
Prior art keywords
collet
head portion
cutting tool
clamping nut
head
Prior art date
Application number
KR1020150138754A
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Korean (ko)
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KR101846255B1 (en
Inventor
최진호
최영훈
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최진호
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Publication date
Application filed by 최진호 filed Critical 최진호
Priority to KR1020150138754A priority Critical patent/KR101846255B1/en
Publication of KR20170039818A publication Critical patent/KR20170039818A/en
Application granted granted Critical
Publication of KR101846255B1 publication Critical patent/KR101846255B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/11—Retention by threaded connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/12—Adapters for drills or chucks; Tapered sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
    • B23B2231/20—Collet chucks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
    • B23B2231/20—Collet chucks
    • B23B2231/2089—Slits of collets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
    • B23B2231/20—Collet chucks
    • B23B2231/2089—Slits of collets
    • B23B2231/2097—Slits of collets having a special form not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)

Abstract

The present invention relates to a collet for securing a cutting tool and more particularly to a cutting tool fixing collet which is formed on one side of a head portion of a collet with a cutting surface having an outer radius equal to the circumference of a concave portion so as to be easily coupled to a clamping nut To a collet for securing a cutting tool.
The present invention is a collet comprising a head portion, a recessed portion, and a main body portion, wherein the head portion has asymmetrical shapes on the left and right sides with respect to the longitudinal plane.

Description

The present invention relates to a collet for fixing a cutting tool,

The present invention relates to a collet for securing a cutting tool and more particularly to a cutting tool fixing collet which is formed on one side of a head portion of a collet with a cutting surface having an outer radius equal to the circumference of a concave portion so as to be easily coupled to a clamping nut To a collet for securing a cutting tool.

In general, a collet is used as a means for fixing a cutting tool such as a drill or an end mill to a machine tool such as a lathe, a ball, or a bowl.

The collet includes a body portion, a head portion, and a recessed portion, and a through hole is formed in the central portion to insert a cutting tool.

That is, the cutting tool is inserted into the body portion through the through-hole of the collet to be coupled to the chuck together with the collet, and pressed against the chuck by the pressing force of the clamping nut coupled to the head portion of the collet, .

At this time, a plurality of slits are formed on the outer circumferential surface of the collet so that the outer diameter of the collet can be deformed when the clamping nut is coupled with the chuck. In order to couple the collet with the clamping nut, In a collapsed state, by a method such as interference fit.

However, in order to reduce the outer diameter of the collet, conventionally, a separate tool is used to reduce the outer diameter of the collet by using the tapered shape of the collet body portion. Thus, in the process of combining the collet and the clamping nut, And the work efficiency is lowered.

In order to solve such a problem, Korean Patent Registration No. 10-1394970 discloses a "collet for fixing a cutting tool ", which has an insertion portion to be inserted into a chuck, A body having a receiving portion formed to receive the tool; A latch neck extending from the insertion portion and recessed so as to catch the latching jaw of the tightening nut; A first curved surface portion extending from the retaining neck and having an outer diameter which is in contact with the engaging jaw to be reduced when an external force is applied to the body along a direction crossing the central axis of the body, And when the external force along the intersecting direction is applied, the flattened portion is slid from the engaging jaw while sliding in surface contact with the leading end surface of the engaging jaw in a state where the external diameter is reduced, And a head having the above-described structure.

That is, the prior art is characterized in that the collet head is formed with a sloped surface including a curved surface portion and a flattened portion so that the collet can be engaged with and separated from the clamping nut by a sliding method without a separate extraction tool , Simply by forming an inclined surface on the head does not cause a large change in the outer diameter of the head, so that it is not easy to join and separate the collet even if it is coupled by a sliding method.

Further, considering the machining error occurring in the production of the collet or the tightening nut, and the deformation due to the heat generated in the cutting operation, the collet and the tightening nut can not be easily combined and separated. There is a disadvantage that collets having different angles and lengths must be manufactured.

1. Korean Registered Patent Publication No. 10-1394970 (2014. 05. 14. Announcement)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the conventional art as described above, and it is an object of the present invention to provide a cutting head having an outer radius equal to the circumference of a concave portion, So that the clamping nut can be easily coupled directly to the clamping nut without using any additional tool.

Further, the present invention provides a collet for securing a cutting tool in which the collet can be easily coupled directly to the clamping nut by making the cross-sectional shape of the head portion to be elliptic, without causing a deviation in the pressing force of the cutting tool in the head portion, There is a purpose.

In addition, the present invention enables the coupling between the collet and the clamping nut to be facilitated, minimizing the number of slits for adjusting the outer diameter of the collet, thereby enhancing the clamping force of the cutting tool, Which is capable of minimizing the outflow of the cutting tool.

According to an aspect of the present invention,

A collet comprising a head portion, a recessed portion, and a main body portion, characterized in that the head portion has asymmetrical shapes on the left and right sides with respect to the longitudinal plane.

At this time, one side of the head part is semicircular in cross section, and the other side is semi-elliptical in cross section having upward and downward long radius.

In addition, a cut surface is formed on one side surface with respect to the vertical plane of the head portion so as to have the same outer radius as that of the outer circumference of the groove portion.

Here, the cut surface may be a flat surface or a curved surface.

The first slit is formed at an interval of 60 degrees in the longitudinal direction of the head portion, the recessed portion, and the main body portion so as to be spaced apart from the rear end of the main body portion by one side end portion and the other end portion is positioned between the first slit And a second slit formed at an interval of 120 degrees in the longitudinal direction of the main body so that one end portion thereof is spaced apart from the upper end of the main body portion by a predetermined distance and the other end portion thereof is opened.

According to another aspect of the present invention, there is provided a collet including a head portion, a recessed portion, and a main body portion, wherein the cross-sectional shape of the head portion is elliptical.

In this case, the minor axis of the cross section of the head section is not less than the outer radius of the recess section.

According to the present invention, it is possible to form a cut surface having an outer radius equal to the outer circumference of the concave portion on one side surface of the head portion, and without using any additional tool, the collet can be directly inserted into the clamping nut So that it can be easily bonded to the substrate.

In addition, according to the present invention, the cross-sectional shape of the head portion is made elliptical so that the existing collet can be recycled. In addition, the collet can be easily coupled directly to the clamping nut, Is not generated.

Further, according to the present invention, there is additionally provided an effect that a collet in which cracks or cracks have occurred on one side of the head part can be processed and processed so that the cross-sectional shape of the head part becomes an ellipse.

Further, according to the present invention, the coupling between the collet and the clamping nut can be facilitated, and the number of slits for adjusting the outer diameter of the collet can be minimized, so that the fixing force of the cutting tool can be strengthened, And has an effect of minimizing the outflow of cutting oil.

1 is a perspective view of a cutting tool fixing collet according to the present invention;
2 is a side view of a cutting tool securing collet according to the present invention;
3 (a) and 3 (b) are plan views showing a cutting tool fixing collet according to the present invention.
FIG. 4 is a side cross-sectional view showing a cutting tool fixing collet according to the present invention coupled to a clamping nut. FIG.
5 is a perspective view showing another embodiment of a cutting tool fixing collet according to the present invention;
6 is a plan view of the present invention shown in Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a cutting tool fixing collet according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a collet for fixing a cutting tool according to the present invention, FIG. 2 is a side view showing a collet for fixing a cutting tool according to the present invention, FIGS. 3 (a) FIG. 4 is a side cross-sectional view showing a collet for fixing a cutting tool according to the present invention coupled to a clamping nut, FIG. 5 is a cross-sectional view showing a collet for fixing a tool according to another embodiment And Fig. 6 is a plan view of the present invention shown in Fig.

The present invention relates to a cutting tool securing collet 100 for forming a cut surface having an outer radius equal to the outer circumference of a concave portion on one side of a head portion of a collet so that it can be directly coupled to the clamping nut 20 without any additional tool 1, the structure includes a head portion 110, a recessed portion 130, and a body portion 120. The head portion 110,

More specifically, the head 110 is formed at the distal end of the collet 100 and serves to fasten the collet 100 and the clamping nut 20 to each other.

That is, as will be described later, the head part 110 is provided with a through hole (not shown) formed inside the collet 100 by tightening by the rotation of the clamping nut 20, So that the cutting tool 10 inserted and coupled to the hole 140 can be firmly fixed.

The recessed portion 130 is formed between the head portion 110 and the body portion 120. The stepped portion 24 formed on the clamping nut 20 is inserted and coupled with the collet 100, So that it can be fastened to the nut (20).

4, the stepped portion 24 formed on the clamping nut 20 is inserted into the recessed portion 130 (see FIG. 4) So that the collet 100 can be fixed.

As described above, the head portion 110 and the recessed portion 130 of the collet 100 serve to allow the collet 100 to be coupled to the clamping nut 20, Since the outer diameter of the clamping nut 110 is larger than the inner diameter of the through hole 22 formed in the clamping nut 20 or the inner diameter formed by the step portion 24 of the clamping nut 20, Thereby coupling the collet 100 to the clamping nut 20.

More specifically, the first slit 122, which will be described later, is formed on the head 110, the groove 130, and the main body 120 so that when an external force is applied to the collet 100 in the radial direction, The head portion 110 is coupled to the clamping nut 20 from the inside to the outside through the through hole 22 formed in the clamping nut 20 in a state in which the outside diameter of the clamping nut 20 is reduced and the outside diameter is reduced, The collet 100 is engaged with the clamping nut 20 while the step portion 24 of the collet 100 is inserted into the recessed portion 130.

The outer diameter of the head portion 110 of the collet 100 may be reduced by using a separate mechanism that can reduce the outer diameter of the collet 100 in order to combine the collet 100 and the clamping nut 20, The clamping nut 20 is coupled to the collet 100. In the present invention, the shape of the head 110 of the collet 100 is asymmetric in order to overcome such inconvenience.

In other words, the conventional collet 100 head is configured such that its cross section has a circular shape in left and right symmetry, and it is difficult to insert through the through hole 22 of the clamping nut 20 having the same shape. According to the present invention, the head portion 110b is formed in an asymmetrical shape having a smaller size than that of the collet 100 while keeping the circular shape, that is, the semicircular shape, on one side with respect to the longitudinal direction L of the collet 100, So that the nut 20 can be easily engaged and separated.

More specifically, one side of the head portion 110a with respect to the vertical plane L of the collet 100 is formed to have a semicircular cross section, and the other side has a cross sectional area smaller than that of one semi- And the other side of the head part 110b is inserted into the step part 24 in a state where one side of the head part 110a is inserted into the through hole 22 through the step part 24 of the clamping nut 20 The head portion 110 passes through the through hole 22 more easily without a separate tool due to the relatively small cross sectional area compared with the one side by pushing the head portion 110 outwardly through the through hole 22, The collet 100 and the clamping nut 20 are engaged with each other as the protrusion 24 is inserted into the recessed portion 130 of the collet 100.

On the other hand, the other side of the asymmetrically formed head part 110b may be formed in various shapes having a narrow cross-sectional area as compared with one side of the head part 110a. have.

That is, as shown in Figs. 1 and 3A, one side of the head portion 110a is formed such that its cross-section has a semicircular shape with respect to the vertical plane L of the collet 100, The collet 100 and the clamping nut 20 can be easily joined to each other by forming the major axis in the transverse section in the upward and downward directions and the elliptical shape in which the minor axis is formed in the left and right directions.

At this time, the radius of the other head portion 110b may be the same as the radius of the other head portion 110a, so that the outer surface of the head portion 110 may be formed as a smooth curved surface.

It is preferable that the minor axis of the other head portion 110b be at least equal to or greater than the outer radius of the recess 130 (the distance from the center of the collet 100 to the outer surface of the recess 130) The coupling between the collet 100 and the clamping nut 20 is facilitated as the radius of the minor axis of the other head portion 110b becomes smaller. However, the minor axis of the other side head portion 110b is larger than the outer radius of the minor groove portion 130 The area of the recessed portion 130 where the stepped portion 24 of the clamping nut 20 can be engaged is reduced and the head portion 110 of the collet 100 may be separated from the clamping nut 20 There is.

The cut surface 112 may be formed on one side of the head portion 110 by reducing the cross sectional area of the other side head portion 110b so that the head portion 110 Is more easily coupled to the clamping nut 20.

That is, the collet 100, which has been used in the past, can be recycled, and the outer radius of the collet 100, which is the same as the outer circumference of the recess 130, The collet 100 and the clamping nut 20 can be easily engaged with each other.

3 (a), the cutting surface 112 may be formed as a curved surface or a flat surface as shown in FIG. 3 (b), and the collet 100 and the clamping nut The cut surface 112 formed on one side surface of the other head portion 110b is formed in the recessed portion of the collet 100 in order to prevent the collet 100 from being separated from the clamping nut 20, 130).

A tapered surface is formed on the outer circumferential surface of the main body part 120 so as to have a smaller diameter toward the rear end. The main body part 120 has a tapered surface A tapered surface having the same inclination as that of the tapered surface of the main body 120 is formed inside the chuck 30 to be inserted and bonded.

4, when the collet 100 is inserted into the chuck 30 in a state where the clamping nut 20 is coupled to the head portion 110 and the recessed portion 130 of the collet 100, The clamping nut 20 is rotated in one direction so that the action of the female screw 26 formed on the inner surface of the clamping nut 20 and the male screw 32 formed on the outer circumferential surface of the chuck 30 engaged with the clamping nut 20, ).

At this time, the main body 120 of the collet 100 is pushed into the inside of the chuck 30 by the tapered surface formed on the outer circumferential surface, so that the first and second slits 122 and 124, which will be described later, are sealed to reduce the cross-sectional area of the outer diameter and the cross- The diameter of the through hole 140 into which the cutting tool 10 is inserted is reduced, so that the cutting tool 10 can be pressed and fixed.

The through hole 140 into which the cutting tool 10 is inserted is formed in the center of the collet 100 including the head 110, the recess 130 and the body 120 in the longitudinal direction And a plurality of slits 122 and 124 are formed on the side of the collet 100 on the outer side of the through hole 140 so that the collet 100 can be expanded or contracted by an external force applied in the radial direction. The first and second slits 122 and 124 include a first slit 122 formed to open the front end of the collet 100 and a second slit 124 formed to open the rear end of the collet 100. [

More specifically, the first slit 122 has one end, that is, the distal end, and the other end, that is, the rear end, is spaced a certain distance from the rear end of the main body 120, 130 and the main body part 120 by the force applied in the radial direction of the collet 100. The head part 110, the recessed part 130 and the main body part 120 in the lateral direction So that the cross sectional area can be changed.

That is, in order to couple and separate the head part 110 of the collet 100 and the clamping ramp, or to allow the main body part 120 to press and fix the cutting tool 10, the head part 110, 130 and the main body 120 of the collet 100 can be changed by changing the cross sectional area of the collet 100 and the cross sectional area of the collet 100. [ A plurality of first slits 122 are formed in the longitudinal direction.

The second slit 124 is formed to be opposite to the first slit 122 such that one end thereof is spaced apart from the upper end of the main body 120 and the other end of the second slit 124 is opened at the rear end of the main body 120 The cross sectional area of the body portion 120 and the diameter of the through hole 140 can be changed by the force in the radial direction applied to the body portion 120 It is a role to play.

Since the first slit 122 and the second slit 124 are also formed in the collet 100 for fixing the conventional cutting tool 10, a detailed description thereof will be omitted.

In the present invention, the number of the first slits 122 and the number of the second slits 124 can be reduced by the shape of the head 110. However, the first slits 122 are spaced by 60 degrees from each other A total of six slits 124 are formed at intervals of 120 degrees so as to be positioned between the first slits 122.

That is, since the first and second slits 122 and 124 serve to change the cross-sectional area of the collet 100 and the diameter of the through-hole 140, the more the change of the cross-sectional area and the diameter is required, The greater the number of slits 122 and 124 formed, the lower the structural rigidity of the collet 100. Particularly, the cutting tool 10 having the cutting oil supply hole has a problem in that the number of the slits 122 and 124 increases, It is preferable to reduce the number of slits 122 and 124 formed in the collet 100 as much as possible because the cutting oil may flow out through the slits 122 and 124. [

The shape of the head 110 minimizes the change in cross sectional area of the collet 100 for coupling and separating the collet 100 and the clamping nut 20 and thus the formation of the first and second slits 122 and 124 So that the structural rigidity of the collet 100 can be improved.

The closed end portions of the first and second slits 122 and 124 are formed up to adjacent points of the lower end and the upper end of the main body portion 120. This is because when the cutting tool 10 having a coolant supply hole is used So that the cutting oil does not flow out through the first and second slits 122 and 124.

In other words, the closed end portions of the first and second slits 122 and 124 are respectively formed at a point adjacent to the lower end and the upper end of the main body 120, more specifically, to a point within 5 mm from the lower end and the upper end of the main body 120 As shown in FIG. 4, there is no open section from the rear end to the front end of the collet 100, so that the cutting oil does not flow out through the first and second slits 122 and 124.

5 and 6, the cross-sectional shape of the head 110 may be formed to have an oval shape. However, the collet 100 may be formed separately from the cutting tool fixing collet 100 according to the present invention. The collet 100 can be easily coupled directly to the clamping nut 20 regardless of the machining errors and thermal deformation of the collet 100 and the clamping nut 20 without using any additional tool of the clamping nut 20, So that the pressing force of the cutting tool 10 by the cutting tool 100 can act more uniformly.

More specifically, since the pressing force of the cutting tool 10 by the collet 100 is mainly generated by the main body 120 of the collet 100, the cutting tool 10, due to the shape difference of the head part 110, When the cross section of the head part 110 is asymmetric as in the above-described embodiment, the difference in the pressing force between the one head part 110a and the other head part 110b, A slight difference in pressing force of the head portion 110 or a difference in fatigue generated in one head portion 110a and the other head portion 110b may occur and thus the cross sectional shape of the head portion 110 may be formed into an oval shape, 100 and the clamping nut 20 can be easily engaged with each other, and the pressing force of the cutting tool 10 in the head part 110 is not varied.

At this time, the minor axis (outer minor axis) of the elliptical head portion 110 is formed to be at least the outer radius of the recessed portion 130 as in the above-described embodiment.

Needless to say, cut surfaces that are integral with the recessed portions 130 may be formed on both side surfaces of the head portion 110, though not shown.

Thus, according to the collet 100 for fixing a cutting tool according to the present invention, it is possible to form a cut surface 112 having an outer radius equal to the outer radius of the recessed portion 130 on one side surface of the head portion, The collet 100 can be directly attached to the clamping nut 20 regardless of the machining errors, thermal deformation, etc. of the collet 100 and the clamping nut 20 without using any additional tool, The coupling between the collet 100 and the clamping nut 20 is facilitated and the number of the slits 122 and 124 for adjusting the outer diameter of the collet can be minimized, So that the fixing force of the slit 10 can be strengthened and the outflow of the cutting oil through the slit can be minimized.

Although the preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention.

The present invention relates to a collet for securing a cutting tool and more particularly to a cutting tool fixing collet which is formed on one side of a head portion of a collet with a cutting surface having an outer radius equal to the circumference of a concave portion so as to be easily coupled to a clamping nut To a collet for securing a cutting tool.

10: cutting tool 20: clamping nut
22: through hole 24:
26: female thread 30: chuck
32: male thread 100: collet
110: head part 110a: one side head part
110b: the other head part 112:
120: main body part 122: first slit
124: second slit 130: recessed groove
140: Through hole

Claims (7)

A collet comprising a head portion, a recessed portion, and a body portion,
Wherein the head portion has an asymmetrical shape on the left and right sides with respect to the vertical plane.
The method according to claim 1,
Wherein one side of the head portion has a semicircular shape in cross section and the other side has a semi-elliptical shape in which a cross section is formed in an upward and downward direction and a major axis is formed in a downward direction.
The method according to claim 1,
Wherein a cut surface is formed on one side surface of the head portion with respect to the vertical plane so as to have an outer radius equal to the outer radius of the recessed portion.
The method of claim 3,
Wherein the cut surface comprises a flat or curved surface. 5. The method according to any one of claims 1 to 4,
A first slit formed at an interval of 60 degrees in the longitudinal direction of the head portion, the recessed portion, and the main body portion so as to be spaced apart from the rear end of the main body portion by one end thereof,
And a second slit positioned between the first slits and spaced apart from the upper end of the main body by a predetermined distance and opened at the other end by 120 degrees in the longitudinal direction of the main body. Collet for securing cutting tool.
A collet comprising a head portion, a recessed portion, and a body portion,
Wherein a cross-sectional shape of the head portion is an elliptical shape.
The method according to claim 6,
Wherein a minor axis of the cross section of the head portion is not less than an outer radius of the recessed portion.



KR1020150138754A 2015-10-01 2015-10-01 Collet for fixing a cutting tool KR101846255B1 (en)

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KR101846255B1 KR101846255B1 (en) 2018-04-09

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11400609B2 (en) 2017-04-05 2022-08-02 Church & Dwight Co., Inc. Portable electric shaver
US11724410B2 (en) 2018-07-31 2023-08-15 Church & Dwight Co., Inc. Portable hair removal apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101394970B1 (en) 2013-09-30 2014-05-14 주식회사 다인정공 Collet for fixing cutting tool

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101394970B1 (en) 2013-09-30 2014-05-14 주식회사 다인정공 Collet for fixing cutting tool

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11400609B2 (en) 2017-04-05 2022-08-02 Church & Dwight Co., Inc. Portable electric shaver
US11878435B2 (en) 2017-04-05 2024-01-23 Church & Dwight Co., Inc. Portable shaving apparatus
US11724410B2 (en) 2018-07-31 2023-08-15 Church & Dwight Co., Inc. Portable hair removal apparatus
US12083692B2 (en) 2018-07-31 2024-09-10 Church & Dwight Co., Inc. Portable hair removal apparatus

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