JP2729854B2 - Electric razor - Google Patents
Electric razorInfo
- Publication number
- JP2729854B2 JP2729854B2 JP22406390A JP22406390A JP2729854B2 JP 2729854 B2 JP2729854 B2 JP 2729854B2 JP 22406390 A JP22406390 A JP 22406390A JP 22406390 A JP22406390 A JP 22406390A JP 2729854 B2 JP2729854 B2 JP 2729854B2
- Authority
- JP
- Japan
- Prior art keywords
- blade
- outer blade
- detecting
- life
- wear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Dry Shavers And Clippers (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は電気かみそりに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to an electric shaver.
（従来の技術） 電気かみそりの外刃は、焼入れ可能なレベルに炭素を
含んだステンレス系材料を使用し、その厚みは数10μｍ
と極めて薄いものであるが、一般に外刃の寿命は使用者
の官能によるところが極めて大きいものと考えられてい
る。(Prior art) The outer blade of an electric razor uses a stainless steel material containing carbon at a quenching level and has a thickness of several tens of micrometers.
Although it is extremely thin, it is generally considered that the life of the outer blade is extremely long depending on the user's sensuality.
すなわち、例えばヒゲの導入孔部の破れ等は痛いと感
じてはじめて見つかるレベルのものであり、又、エッジ
の摩耗による切れ味の低下も、目視による確認は不可能
に近く、ソリ味という官能に頼らざるを得なかった。That is, for example, breakage of the mustache introduction hole is a level that can be found only when it is felt painful, and a decrease in sharpness due to abrasion of the edge is almost impossible to visually confirm, and it depends on the sensation of warping. I had no choice.
この為、電気かみそりの外刃はエッジ部が摩耗し、切
れ味としてはずでに寿命となっているものでも、外観上
破れ等の問題がなければそのまま使用されているのが実
状であった。For this reason, the outer blade of the electric razor has been used as it is without any problem such as tearing in appearance, even though the outer blade is worn out and has a long life due to its sharpness.
ところで、電気かみそりの肌への押付圧を検知する技
術は、本件出願の出願人による特開昭60−176682号とし
て示されているが、この技術は押付圧の検知によりスイ
ッチの入・切を行うものであり、本質的に寿命を検知す
るものではなかった。By the way, a technology for detecting the pressing pressure of the electric razor against the skin is disclosed in Japanese Patent Application Laid-Open No. 60-176682 by the applicant of the present application, but this technology turns on / off the switch by detecting the pressing pressure. It did so and did not essentially detect the life.
又、上記の従来技術では、押付圧の検出を内刃支持体
に取付けた圧電素子で行っているが、この場合、実際の
押付圧は内刃、内刃支持体とクッション的要素を介して
検出している為、微妙な変化は検出することができず、
更に、肌の当たる方向により、その検出値が変化すると
いう課題があった。Further, in the above-mentioned prior art, the detection of the pressing pressure is performed by the piezoelectric element mounted on the inner blade support. In this case, the actual pressing pressure is controlled via the inner blade, the inner blade support and the cushion-like element. Because it is detected, subtle changes cannot be detected,
Further, there is a problem that the detected value changes depending on the direction in which the skin hits.
従って、この従来技術によれば、肌への押付圧を検知
することはできても、微妙な変化をとらえることはでき
ず、又、当たり方向により検出値が変わる為、寿命検知
の様な用途には使えず、スイッチの入・切にしか使えな
いという課題があった。Therefore, according to this conventional technique, even if it is possible to detect the pressing pressure on the skin, it is not possible to detect a delicate change, and since the detection value changes depending on the direction of hitting, it can be used for applications such as life detection. There was a problem that it could not be used for turning on and off the switch.
本発明は上述のような点に鑑みて為されたものであ
り、その目的とするところは、これまで使用者の官能に
頼っていた外刃の寿命を、切味低下に伴う諸変化を外刃
で検出することで寿命を検知することのできる電気かみ
そりを提供することにある。The present invention has been made in view of the above points, and its purpose is to reduce the life of the outer blade, which has hitherto relied on the user's sensuality, to reduce various changes due to reduced sharpness. An object of the present invention is to provide an electric razor whose life can be detected by detecting with a blade.
（課題を解決するための手段） 前記目的を達成するために、本発明は、外刃と内刃を
備え、内刃がモーター等の駆動源により回転もしくは往
復動をする電気かみそりにおいて、 前記外刃に外部から受けた圧力を電圧もしくは電流に
変換可能な材料を被覆し、外刃を肌に押圧することによ
り生じる電気的変化により駆動源スイッチの入切・刃寿
命の検知、過剰押圧の検知を行うことを特徴とし、 又、前記外刃の表層を絶縁化するか、もしくは絶縁皮
膜を形成した後、導電性の耐摩耗皮膜を形成し、耐摩耗
皮膜の摩耗に伴う抵抗値変化を検出することにより、外
刃寿命の検知を行うことを特徴とし、更に、前記外刃に
温度変化を電圧もしくは電流に変換可能な材料を被覆
し、切れ味低下による切断抵抗増加に伴う発熱を検知す
ることにより、外刃寿命の検知を行うことを特徴とす
る。(Means for Solving the Problems) In order to achieve the above object, the present invention provides an electric shaver including an outer blade and an inner blade, wherein the inner blade rotates or reciprocates by a driving source such as a motor. The blade is coated with a material that can convert the pressure received from the outside into voltage or current, and the electrical change caused by pressing the outer blade against the skin detects the on / off of the drive source switch, detection of blade life, and detection of excessive pressing. In addition, the surface layer of the outer cutter is insulated, or after forming an insulating film, a conductive wear-resistant film is formed, and a change in resistance value caused by wear of the wear-resistant film is detected. By detecting the life of the outer cutter, furthermore, the outer cutter is coated with a material capable of converting a temperature change into a voltage or a current, and heat generated by an increase in cutting resistance due to a decrease in sharpness is detected. By the outside And performing detection of life.
（作用） 前記構成により、本発明によれば、電気かみそりの切
れ味が低下するに従い、外刃を肌に押付ける力が増加す
ることから、圧電素子のように押付圧を電気量に変換可
能な材料を外刃に用いることで、外刃の寿命を判断する
ことが可能であり、 又、外刃に導電性の耐摩耗皮膜を形成し、この耐摩耗
皮膜の摩耗に伴う抵抗値の変化を検出することで、外刃
の寿命を検出することが可能であり、 更に、切れ味低下に従いヒゲの切断抵抗が増加して発
熱を伴うことから、温度変化を電気量に変換可能な材料
を外刃に用いることで、このときの温度を検出し外刃の
寿命を検出することができる。(Function) According to the present invention, according to the present invention, the force of pressing the outer blade against the skin increases as the sharpness of the electric razor decreases, so that the pressing pressure can be converted into an electric quantity like a piezoelectric element. By using a material for the outer blade, it is possible to judge the life of the outer blade, and to form a conductive wear-resistant film on the outer blade, and to evaluate the change in resistance due to the wear of this wear-resistant film. By detecting, it is possible to detect the life of the outer blade.Furthermore, since the cutting resistance of the beard increases as the sharpness decreases and heat is generated, a material that can convert temperature changes into electric quantity is used as the outer blade. In this case, the temperature at this time can be detected, and the life of the outer blade can be detected.
（実施例） 以下、本発明の実施例を添付図面により説明する。(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.
第１図には本発明に係る電気かみそりの外観が示され
ており、この電気かみそり１は外刃２と内刃（図示せ
ず）を備えていて、内刃はモーター等の駆動装置により
外刃２の内側で回転もしくは往復動を行う。FIG. 1 shows the appearance of an electric shaver according to the present invention. The electric shaver 1 has an outer blade 2 and an inner blade (not shown), and the inner blade is driven by a driving device such as a motor. Rotation or reciprocation is performed inside the blade 2.
（請求項１記載の発明に関する実施例） 第２図には外刃２−１の拡大断面図が示されており、
この外刃２−１の基材には厚み40μｍのマルテンサイト
系ステンレスを用い、第３図（ａ）のようにプレスによ
りヒゲ導入孔及びカウンターシンクを形成した後、焼入
れを行った。FIG. 2 shows an enlarged sectional view of the outer blade 2-1.
As a base material of the outer blade 2-1, a martensitic stainless steel having a thickness of 40 μm was used. After forming a mustache introduction hole and a counter sink by pressing as shown in FIG. 3 (a), quenching was performed.
この基材上に押付圧を検知する層を形成するのである
が、第３図（ｂ）のように材料としてはPZT（PbZrO3−P
bTiO3）から成る圧電素子を用いた。この圧電素子PZTは
外部から受ける圧力に応じた起電力を発生する。A layer for detecting the pressing pressure is formed on the base material. As shown in FIG. 3 (b), the material is PZT (PbZrO 3 -P
A piezoelectric element made of bTiO 3 ) was used. This piezoelectric element PZT generates an electromotive force according to the pressure received from the outside.
上記の基材はフープ状で真空槽内にセットされ、イオ
ンビームスパッタによりPZT層が形成される。この際、P
ZT層は肌に当たる側にのみ形成され、その厚みは2000Å
程度である。肌に当たる側のみに形成するのは、内刃側
に形成すると内刃の摺動の影響をノイズとして拾いやす
く、又、内刃による破損が考えられるからである。The above substrate is set in a vacuum chamber in a hoop shape, and a PZT layer is formed by ion beam sputtering. At this time, P
The ZT layer is formed only on the side that contacts the skin, and its thickness is 2000 mm.
It is about. The reason why it is formed only on the side that contacts the skin is that if it is formed on the inner blade side, the effect of sliding of the inner blade can be easily picked up as noise, and damage due to the inner blade can be considered.
なお、PZT層の形成法の一例として、イオンビームス
パッタを挙げたが、その条件としては、ターゲットとし
て鉛Pb、チタンTi、ジルコニウムZrの３種を用い、その
各々に1KV、300mAのアルゴンビームAr+を照射して、各
ターゲットからスパッタさせて基材に付着させるととも
に、基材上に5KV程度のO+イオンを照射するか、もしく
はO+プラズマを直接吹きつけることで、基材上で反応さ
せてPZT層を形成させる。As an example of the method of forming the PZT layer, ion beam sputtering was used. The conditions were as follows: three targets of lead Pb, titanium Ti, and zirconium Zr were used, and each of them was an argon beam Ar of 1 KV and 300 mA. Irradiate + and sputter from each target to adhere to the substrate, and irradiate O + ions of about 5 KV onto the substrate or directly blow O + plasma to react on the substrate Then, a PZT layer is formed.
この場合、PZT層の形成は上記に限定する必要はな
く、PZTターゲットを直接、イオンビームスパッタ、も
しくは従来の高周波放電によりスパッタしてもかまわな
い。In this case, the formation of the PZT layer need not be limited to the above, and the PZT target may be directly sputtered by ion beam sputtering or conventional high-frequency discharge.
上記のPZT層の形成後、第３図（ｃ）のように耐摩耗
層としてTiN層を形成する。TiN層は基材の表裏双方に形
成し、その厚みは1000Å程度で良い。又、形成方法もイ
オンプレーティング、Tiを蒸着しながらN+イオンを照射
するダイナミックミキシング等の従来技術で良い。After the formation of the PZT layer, a TiN layer is formed as a wear-resistant layer as shown in FIG. The TiN layer is formed on both the front and back surfaces of the substrate, and the thickness may be about 1000 mm. Further, the forming method may be a conventional technique such as ion plating or dynamic mixing in which Ti + is irradiated while depositing Ti.
第４図のように、外刃２は外刃支持体３に取付けられ
るが、湾曲した両側には接点が設けられ、その接点を介
して本体側の検出部へと起電力が伝えられる。As shown in FIG. 4, the outer blade 2 is attached to the outer blade support 3, but contacts are provided on both sides of the curved surface, and the electromotive force is transmitted to the detection unit on the main body side through the contacts.
次に第５図（ａ）（ｂ）に基づき動作を説明する。 Next, the operation will be described with reference to FIGS.
上記で完成した外刃２は、外刃支持体３に取付けた時
点で湾曲させられる為、一定の起電力を発生している。Since the outer blade 2 completed as described above is bent when it is attached to the outer blade support 3, a constant electromotive force is generated.
そして、使用初期の切れ味の良い段階では、第５図
（ａ）の矢印方向（）の押付圧は低く、又、仮に高く
なっても一時的なものである。従って第５図（ｂ）のよ
うに圧電素子PZTの起電力は初期状態よりもやや高いレ
ベルにある程度である。しかし、切れ味が低下するに従
い押付圧は増加し、それが定常的に続くようになる。こ
の状態で一定のしきい値レベルを設定し、それを定常的
に越える様であれば外刃寿命であると判定する。Then, at the sharpness stage at the beginning of use, the pressing pressure in the direction of the arrow () in FIG. 5A is low, and even if it is high, it is temporary. Therefore, as shown in FIG. 5B, the electromotive force of the piezoelectric element PZT is at a level slightly higher than the initial state. However, as the sharpness decreases, the pressing pressure increases, and the pressing pressure constantly continues. In this state, a certain threshold level is set, and if the threshold level is constantly exceeded, it is determined that the life of the outer cutter is reached.
このしきい値レベルの一例としては、外刃自体が破壊
する際のPZTの出力電圧レベルの70％である。又、支持
体に取付けられた時の起電力を越える起電力が発生した
時にスイッチを自動的にON、もとに戻った時にスイッチ
を自動的にOFFとするスイッチ機能を持たせることも可
能であり、又、ある設定値以上では無条件にスイッチを
OFFさせる安全機能の付加も可能である。An example of this threshold level is 70% of the output voltage level of PZT when the outer blade itself breaks. It is also possible to have a switch function that turns on the switch automatically when an electromotive force that exceeds the electromotive force when attached to the support is used, and turns off the switch automatically when it returns to the original position. Yes, and above a certain set value, unconditionally switch
A safety function to turn off can be added.
（請求項２記載の発明に関する実施例） 第６図には外刃２−２の拡大断面図が示されており、
この外刃２−２の基材は前記で示されたものと同じもの
を使用する。絶縁層にはポリイミドを用い、その形成法
としては4,4′−ジアミノジフェニルエーテルと二無水
ピロメリット酸を等モルずつジメチルホルムアミドに溶
解させ、その中に基材を浸漬させ、一定スピードで引き
上げる。その後200℃まで徐々に昇温させて、ジメチル
ホルムアミドを揮発させた後、300℃まで加熱してイミ
ド化させる。FIG. 6 is an enlarged cross-sectional view of the outer blade 2-2.
The same base material as that described above is used for the base material of the outer cutter 2-2. Polyimide is used for the insulating layer. As a forming method, 4,4'-diaminodiphenyl ether and pyromellitic dianhydride are dissolved in equimolar amounts in dimethylformamide, and the base material is immersed therein and pulled up at a constant speed. Thereafter, the temperature is gradually increased to 200 ° C. to volatilize dimethylformamide, and then heated to 300 ° C. for imidization.
ポリイミドの形成方法は上述の浸漬法に限らず、真空
中で重合させる真空重合でも良い。又、絶縁層材料もポ
リイミドに限らず、テフロン、パリレン等絶縁可能な皮
膜が形成できれば良く、又、必ずしも皮膜による必要も
なく、イオン注入等の手法により基材表層を絶縁化でき
ればそれでも良い。The method of forming the polyimide is not limited to the dipping method described above, but may be vacuum polymerization in which polymerization is performed in a vacuum. The material of the insulating layer is not limited to polyimide, but may be any as long as an insulative film such as Teflon or parylene can be formed. It is not always necessary to use the film, and any material can be used as long as the surface of the base material can be insulated by a technique such as ion implantation.
この絶縁皮膜上に、先の実施例の方法で耐摩耗層であ
るTiN層を形成する。TiNの比抵抗は32〜130μΩ・cmで
あるが、摩耗により膜厚が薄くなるに従い、抵抗値は増
加する。On this insulating film, a TiN layer which is a wear-resistant layer is formed by the method of the previous embodiment. Although the specific resistance of TiN is 32 to 130 μΩ · cm, the resistance value increases as the film thickness decreases due to wear.
従って第７図のように使用開始時の初期抵抗をメモリ
ーし、使用頻度による抵抗値の増加から摩耗状態を推定
し、寿命を検知するのである。Therefore, as shown in FIG. 7, the initial resistance at the start of use is memorized, the wear state is estimated from the increase in the resistance value due to the use frequency, and the life is detected.
（請求項３記載の発明に関する実施例） 第８図には外刃２−３の拡大断面図が示されており、
この外刃２−３の基材は前記で示されたものと同じもの
を使用する。温度検知層としてはCoO−FeOサーミスタを
用いる。この材料は温度上昇に伴って比抵抗が減少する
ので抵抗変化を読みとることで温度変化を検出する。FIG. 8 shows an enlarged sectional view of the outer cutter 2-3.
As the base material of the outer cutter 2-3, the same one as described above is used. A CoO-FeO thermistor is used as the temperature detection layer. Since the specific resistance of this material decreases with an increase in temperature, the change in temperature is detected by reading the change in resistance.
形成方法は、前に述べた実施例でのPZT層形成と同様
の方法で、イオンビームスパッタ等で形成可能である。
この際にターゲットにはFe、Coの２つを用いる。The forming method can be the same as the method of forming the PZT layer in the above-described embodiment, and can be formed by ion beam sputtering or the like.
At this time, two targets, Fe and Co, are used.
本実施例では、第９図（ａ）〜（ｃ）のように温度検
知層は内刃側に形成している。これは摩耗による切断抵
抗の増加とそれに伴う温度上昇を検出する為に、内刃側
に形成するものである。温度検知層形成後は、両面に耐
摩耗層、この場合では窒化チタンTiNを前述と同じ方法
で形成する。In this embodiment, the temperature detecting layer is formed on the inner blade side as shown in FIGS. 9 (a) to 9 (c). This is formed on the inner cutter side in order to detect an increase in cutting resistance due to abrasion and an accompanying temperature rise. After forming the temperature detecting layer, a wear-resistant layer, in this case, titanium nitride TiN is formed on both surfaces by the same method as described above.
基材のステンレス、及び耐摩耗層のTiNは導電性を持
つため、温度変化による抵抗変化を検出し難い場合は、
基材−温度検出層間、及び温度検出層−耐摩耗層間に絶
縁層を形成すれば良い。更に温度変化を精密に検出する
には、第10図のように各ヒゲ導入孔毎の温度検出層を形
成すれば良い。Since stainless steel of the base material and TiN of the wear-resistant layer have conductivity, when it is difficult to detect a resistance change due to a temperature change,
An insulating layer may be formed between the substrate and the temperature detecting layer and between the temperature detecting layer and the wear-resistant layer. In order to detect the temperature change more precisely, a temperature detection layer may be formed for each mustache introduction hole as shown in FIG.
上記の外刃を使用した電気かみそりでは、外刃と内刃
との摺動抵抗により温度上昇が検出される。更にヒゲを
そることにより、切断抵抗によって温度上昇が加わる
が、それは摩耗による切断抵抗増加に伴い上昇する。こ
れを検知することで第11図のように寿命を検知すること
ができるのである。In the electric razor using the above-mentioned outer blade, the temperature rise is detected by the sliding resistance between the outer blade and the inner blade. Further skewing causes an increase in temperature due to cutting resistance, which increases with increasing cutting resistance due to wear. By detecting this, the life can be detected as shown in FIG.
（発明の効果） 本発明は上述の様に、外刃自信に自らの寿命検知機能
を付与することで、従来の官能による寿命検知でなく、
明確な寿命を知ることができ、常に快適なヒゲそりが可
能となる。(Effect of the Invention) As described above, the present invention provides the outer blade itself with its own life detecting function, so that it is not the conventional sensory life detecting function,
It is possible to know a clear life, and always a comfortable beard sled is possible.
第１図は本発明に係る電気かみそりの外観図、第２図は
外刃の要部拡大断面図、第３図（ａ）〜（ｃ）は外刃の
製造工程を示す図、第４図は外刃の組立状態を示す図、
第５図（ａ）は押付圧の方向を示す図、第５図（ｂ）は
圧電素子の出力電圧と使用回数との関係を示す図、第６
図は他の発明における外刃の要部拡大断面図、第７図は
耐摩耗層の抵抗値と使用頻度との関係を示す図、第８図
は更に他の発明における外刃の要部拡大断面図、第９図
（ａ）は外刃の外観を示す図、第９図（ｂ）（ｃ）はそ
れぞれ外刃の断面構成を示す図、第10図は外刃に回路状
の温度検出層を形成した場合の拡大図、第11図は切断抵
抗による温度上昇と使用頻度との関係を示す図である。 １……電気かみそり 2,2−1,2−2,2−３……外刃1 is an external view of an electric shaver according to the present invention, FIG. 2 is an enlarged sectional view of a main part of an outer blade, FIGS. 3 (a) to 3 (c) are views showing a manufacturing process of the outer blade, and FIG. Is a diagram showing an assembled state of the outer blade,
FIG. 5 (a) is a diagram showing the direction of the pressing pressure, FIG. 5 (b) is a diagram showing the relationship between the output voltage of the piezoelectric element and the number of uses, and FIG.
FIG. 7 is an enlarged sectional view of a main part of an outer blade according to another embodiment, FIG. 7 is a diagram showing a relationship between a resistance value of a wear-resistant layer and frequency of use, and FIG. 9 (a) is a diagram showing the appearance of the outer blade, FIGS. 9 (b) and (c) are diagrams showing the cross-sectional configuration of the outer blade, and FIG. 10 is a circuit-like temperature detection for the outer blade. FIG. 11 is an enlarged view of a case where a layer is formed, and FIG. 11 is a view showing a relationship between a temperature rise due to a cutting resistance and a use frequency. 1 ... Electric razor 2,2-1,2-2,2-3 ... Outer blade
Claims (3)
動源により回転もしくは往復動をする電気かみそりにお
いて、 前記外刃に外部から受けた圧力を電圧もしくは電流に変
換可能な材料を被覆し、外刃を肌に押圧することにより
生じる電気的変化により駆動源スイッチの入切・刃寿命
の検知、過剰押圧の検知を行うことを特徴とした電気か
みそり。1. An electric shaver having an outer blade and an inner blade, wherein the inner blade rotates or reciprocates by a driving source such as a motor, wherein a material capable of converting a pressure externally received by the outer blade into a voltage or a current. An electric razor characterized by detecting the on / off of the drive source switch, the life of the blade, and the detection of excessive pressing by an electrical change caused by pressing the outer blade against the skin.
動装置により回転もしくは往復動をする電気かみそりに
おいて、 前記外刃の表層を絶縁化するか、もしくは絶縁皮膜を形
成した後、導電性の耐摩耗皮膜を形成し、耐摩耗皮膜の
摩耗に伴う抵抗値変化を検出することにより、外刃寿命
の検知を行うことを特徴とした電気かみそり。2. An electric shaver having an outer blade and an inner blade, wherein the inner blade is rotated or reciprocated by a driving device such as a motor, after insulating a surface layer of the outer blade or forming an insulating film. An electric razor characterized by forming a conductive wear-resistant film and detecting the life of the outer blade by detecting a change in resistance value caused by wear of the wear-resistant film.
動装置により回転もしくは往復動をする電気かみそりに
おいて、 前記外刃に温度変化を電圧もしくは電流に変換可能な材
料を被覆し、切れ味低下による切断抵抗増加に伴う発熱
を検知することにより、外刃寿命の検知を行うことを特
徴とした電気かみそり。3. An electric shaver having an outer blade and an inner blade, wherein the inner blade is rotated or reciprocated by a driving device such as a motor, wherein the outer blade is coated with a material capable of converting a temperature change into a voltage or a current. An electric razor characterized by detecting the life of an outer blade by detecting heat generated by an increase in cutting resistance due to a decrease in sharpness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22406390A JP2729854B2 (en) | 1990-08-24 | 1990-08-24 | Electric razor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22406390A JP2729854B2 (en) | 1990-08-24 | 1990-08-24 | Electric razor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04105685A JPH04105685A (en) | 1992-04-07 |
| JP2729854B2 true JP2729854B2 (en) | 1998-03-18 |
Family
ID=16807991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22406390A Expired - Fee Related JP2729854B2 (en) | 1990-08-24 | 1990-08-24 | Electric razor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2729854B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200021454A (en) * | 2017-06-29 | 2020-02-28 | 빅-비올렉스 에스아 | System and method for electrically detecting blade wear |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT403958B (en) * | 1992-02-17 | 1998-07-27 | Payer Lux Elektroprod | ELECTRIC SHAVER |
| US6009623A (en) † | 1997-10-02 | 2000-01-04 | Warner-Lambert Company | Razor with in situ sensor |
| WO2016055509A1 (en) | 2014-10-07 | 2016-04-14 | Koninklijke Philips N.V. | Electrical appliance for performing a cutting action on hairs as present on an area of skin |
-
1990
- 1990-08-24 JP JP22406390A patent/JP2729854B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200021454A (en) * | 2017-06-29 | 2020-02-28 | 빅-비올렉스 에스아 | System and method for electrically detecting blade wear |
| KR102633234B1 (en) | 2017-06-29 | 2024-02-02 | 빅 비올렉스 싱글 멤버 에스.아. | Systems and methods for electrically detecting razor blade wear |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04105685A (en) | 1992-04-07 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |