The present invention relates to scissors and more particularly, to a notched single-edge thinning scissors that has rounded edges formed in the notched blades around the notches for supporting the hair not to be cut without causing damage to the hair not to be cut.

A conventional notched single-edge thinning scissors A (see FIGS. 1 and 2) is comprised of a first scissors member 100 and a second scissors member 200 pivotally connected together with a pivot 300. The first scissors member 100 has a handle (ring handle) 101 at one end and a blade 102 at the other end. The blade 102 has a contact side 106, a distal side 107, and a notched edge formed of teeth 103 and notches 104. The width of the notches 104 is designed subject to the amount of the hair not to be cut during trimming (the design shown in FIG. 1 has relatively wider notches; the design shown in FIG. 2 has relatively narrow notched). Each tooth 103 has a cutting edge 105. The second scissors member 200 has a handle 201 at one end and a blade 202 at the other end. The blade 202 is a cutting blade having a cutting side 203 and a distal side 204 opposite to the cutting side 203. When closing the thinning scissors A, the cutting side 203 of the blade 202 of the second scissors member 200 is moved over the cutting edges 105 of the teeth 103 and the contact side 106 of the blade 102 of the first scissors member 100 to cut the hair. This design of notched single-edge thinning scissors is still not satisfactory in function. Because the intersected areas between the contact side 106 and distal side 107 of the blade 102 and the left and right sidewalls and bottom walls of the notches 104 are aligned in line X (see FIGS. 3 and 4), the hair not to be cut may be jammed in line X, i.e., in the intersected areas between the contact side 106 and distal side 107 of the blade 102 and the left and right sidewalls and bottom walls of the notches 104 during trimming, thereby causing damage to the hair not to be cut.

JP 2003 290572 discloses combing scissors which do not damage the hair intruding into comb grooves between comb blades and do not give rise to hooking to the hair in spite of such a motion as to remove the combing scissors from the air while the air is held put into the combing grooves. In these scissors, the peripheral edges of the combing grooves are bevelled, which would form a gap on each side while the edges abut against the blade. Therefore, the hair would be clipped by these gaps, thus the hairdressing scissors couldn't separate swimmingly and obstruct the cutting accordingly. Moreover, the bevelled peripheral edges are formed with sharp edges, which can hurt and broke the hair when the thinning scissors are in use.

DE 85 13 958 discloses notched double-edged thinning scissors, each notch having a left sidewall, a right sidewall, and a bottom wall. This document does not disclose chamfered peripheral edges formed in the notched blade between the hair contact of the notched blade and the left sidewall, right sidewall and bottom sidewall of each notch.

The present invention has been accomplished under the circumstances in view.

It is the main object of the present invention to provide a notched single-edge thinning scissors that eliminates the drawback of the aforesaid prior art design.

To achieve this and other objects of the present invention, the notched single-edge thinning scissors comprises a first scissors member and a second scissors member pivotally connected together with a pivot. The first scissors member and the second scissors member each have a handle at one end thereof and a blade at an opposite end thereof. The blade of the first scissors member has a contact side, a distal side opposite to the contact side, and a notched edge formed of teeth and notches. Each tooth has a cutting edge. The blade of the second scissors member has a cutting side and a distal side opposite to the cutting side. The notches of the blade of the first scissors member define with the blade of the second scissors member a hair receiving space. Each notch has a left sidewall, a right sidewall, and a bottom wall. The contact side and distal side of the blade of the first scissors member each have first rounded edges, second rounded edges and third rounded edges respectively connected to the left sidewall, right sidewall and bottom wall of each notch. The blade of the first scissors member has a plurality of rounded chamfered edges formed in the intersected areas between the cutting edges and the left and right sidewalls of each notch.

• FIG. 1 is a plain view of a notched single-edge thinning scissors according to the prior art.
• FIG. 2 is a plain view of another notched single-edge thinning scissors according to the prior art.
• FIG. 3 is a sectional view taken along line R-R of FIG. 1.
• FIG. 4 is a sectional view taken along line P-P of FIG. 1.
• FIG. 5 is a perspective view of a notched single-edge thinning scissors according to the present invention.
• FIG. 6 is a perspective view in an enlarged scale a part of the present invention.
• FIG. 7 is a sectional view taken along line F-F of FIG. 11.
• FIG. 8 is a sectional view taken along line E-E of FIG. 6.
• FIG. 9 is similar to FIG. 7 but showing the blades of the two scissors members moved relative to each other.
• FIG. 10 is similar to FIG. 8 but showing the blades of the two scissors members moved relative to each other.
• FIG. 11 corresponds to FIG. 6 but viewed from another side.
• FIG. 12 is a perspective view in an enlarged scale of a part of the present invention showing rounded edges formed in the intersected areas between the cutting edges and the left and right sidewalls (I).
• FIG. 13 is a perspective view in an enlarged scale of a part of the present invention showing rounded edges formed in the intersected areas between the cutting edges and the left and right sidewalls (II).

Referring to FIGS. 5 and 6, a notched single-edge thinning scissors B in accordance with the present invention is shown comprised of a first scissors member 10 and a second scissors member 20 pivotally connected together with a pivot 30. The first scissors member 10 has a handle (ring handle) 11 at one end and a blade 12 at the other end. The blade 12 has a notched blade having a contact side 15, a distal side 16 opposite to the contact side 15, and a notched edge formed of teeth 13 and notches 14. The teeth 13 each have a cutting edge 17. The second scissors member 20 has a handle (ring handle) 21 at one end and a blade 22 at the other end. The blade 22 is a cutting blade having a cutting side 23 and a distal side 24 opposite to the cutting side 23. When closing the thinning scissors B, a hair receiving space C is defined between the notches 14 of the blade 12 of the first scissors member 10 and the blade 22 of the second scissors member 20 (see FIGS. 6 and 11). Each notch 14 has a left sidewall 141, a right sidewall 142, and a bottom wall 143. The contact side 15 of the blade 12 has a first edges 151, second rounded edges 152 and third rounded edges 153 respectively connected to the left sidewall 141, right sidewall 142 and bottom wall 143 of each of the notches 14 (see FIG. 7). The distal side 16 of the blade 12 has a first rounded edges 161, second rounded edges 162 and third rounded edges 163 respectively connected to the left sidewall 141, right sidewall 142 and bottom wall 143 of each of the notches 14 (see FIG. 8). When closing the thinning scissors B, the cutting side 23 of the blade 22 of the second scissors member 20 is moved over the cutting edges 17 of the teeth 13 and the contact side 15 of the blade 12 of the first scissors member 10 to cut the hair (see FIG. 6).

When trimming the hair, the blades 12, 22 of the two scissors members 10, 20 are moved relative to each other in proximity, and the cutting side 23 of the blade 22 of the second scissors member 20 is continuously maintained in contact with the cutting edges 17 and the contact side 15, and therefore the cutting side 23 and the cutting edges 17 of the blade 12 of the first scissors member 10 work to cut the hair. The cut-off hair H falls along the cutting edges 17 (see FIG. 9). At this time, the notches 14 and the hair receiving space C receive the hair not to be cut H1. During trimming, the hair not to be cut H1 being received in the notches 14 and the hair receiving space C is maintained in "sliding" contact with the rounded edges 151~153 and the rounded edges 161∼163, preventing damage (see FIGS. 9 and 10).

Referring to FIGS. 12 and 13, rounded edges 171a are formed in all intersected areas between the cutting edges 17 and the left and right sidewalls 141, 142 of the notches 14 (see FIG. 12) or rounded edges 171b of which is formed in the bottom side of each intersected area between the cutting edges 17 and the left and right sidewalls 141, 142 of the notches 14 (see FIG. 13) for supporting the hair not to be cut H1 during trimming.

As indicated above, by means of the rounded edges 151~153, 161~163, 171, the hair not to be cut H1 being received in the notches 14 and the hair receiving space C is maintained in "sliding" contact with the rounded edges 151~153, 161~163, 171, and therefore the hair not to be cut H1 can smoothly be moved away from the thinning scissors B without damage during trimming.

Although a particular embodiment of the invention has been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention.