US4240435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair tweezers
Assignee: Individual
•
Filing: 1979-02-27
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Granted: 1980-12-23
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Expires: 1999-02-27
Abstract
Abstract Hair tweezers comprising a pincette member which is retractable by means of a spiral spring immediately after the pincette member is pressed to grasp an objective hair. The hair tweezers have a cylindrical casing in which there are provided a stopper which locks the pincette member in position against the resilient force of the spiral spring and an actuator assembly such as the aforesaid spiral spring. Buttons each having bearing elements therein are provided at the fore portion of the casing in such a manner that the pincette member is unlocked with the stopper and slidably retracted immediately after the buttons are pressed.
Inventors
- 👤 Toshio Yazawa
- 👤 Fumi Yazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:28
CPC Classifications
A; A45; A45D; A45D26/00; A45D26/0066; A45D26/0071; A45D2026/008; A45D2026/0085
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
235 words
Tweezers for removing hair comprising: a cylindrical housing which has openings at one end portion thereof; said openings being opposite to each other relative to the axis of said cylindrical housing, a stopper member connected to the inside of said cylindrical housing; a pincette member which has two symmetrical legs connected with each other at one end thereof; said pincette member having tips at the other end thereof for securing a hair, buttons secured in said openings of said cylindrical housing; said pincette member being mounted for lengthwise movement in said housing between a retracted and an advanced position, said pincette member engaging said stopper member when in said advanced position, said buttons each being movable in a perpendicular direction relative to the axis of said housing, said buttons each including therein rolling contact bearing means which roll on the respective legs of said pincette member during lengthwise movements of said pincette member, and an actuator assembly for advancing and retracting said pincette member; said actuator assembly comprising a shaft connected to the end of said pincette member, a first sleeve disposed on the inside of said housing, a second sleeve connected to said shaft, and a spiral spring disposed between said first and second sleeves, whereby when said buttons are pressed, the pincette member is disengaged from said stopper member to thereby retract said pincette member while said pincette member is holding the hair.
Claim 2
Dependent Claim
235 words
Tweezers for removing hair comprising: a cylindrical housing which has openings at one end portion thereof; said openings being opposite to each other relative to the axis of said cylindrical housing, a stopper member connected to the inside of said cylindrical housing; a pincette member which has two symmetrical legs connected with each other at one end thereof; said pincette member having tips at the other end thereof for securing a hair, buttons secured in said openings of said cylindrical housing; said pincette member being mounted for lengthwise movement in said housing between a retracted and an advanced position, said pincette member engaging said stopper member when in said advanced position, said buttons each being movable in a perpendicular direction relative to the axis of said housing, said buttons each including therein rolling contact bearing means which roll on the respective legs of said pincette member during lengthwise movements of said pincette member, and an actuator assembly for advancing and retracting said pincette member; said actuator assembly comprising a shaft connected to the end of said pincette member, a first sleeve disposed on the inside of said housing, a second sleeve connected to said shaft, and a spiral spring disposed between said first and second sleeves, whereby when said buttons are pressed, the pincette member is disengaged from said stopper member to thereby retract said pincette member while said pincette member is holding the hair.
Claim 3
Dependent Claim
51 words
The tweezers according to claim 1, in which said cylindrical housing consists of a barrel which has a thread at the outer end thereof, and a tubular trim member which has a thread at the inner end thereof, said thread of the barrel mating with said thread of the trim member.
Claim 4
Dependent Claim
59 words
The tweezers according to claim 1, in which said pincette member has recesses to form shoulders, said stopper member being an annular shaped member, said pincette member being inserted through said stopper member, said stopper member having thickened portions at the opposite side for engaging with said shoulders of said pincette member against the force of said spiral spring.
Claim 5
Dependent Claim
63 words
The tweezers according to claim 1, in which said pincette member has holes at the legs thereof, said stopper member being an annular shaped member, said pincette member being inserted through said stopper member, said stopper member having projections extending oppositely toward a center thereof, said projections being engageable with said holes of the pincette member against the force of said spiral spring.
Claim 6
Dependent Claim
30 words
The tweezers according to claim 1, in which said buttons each have a plurality of concavities and said rolling contact bearing means comprise steel balls rotatably secured within said concavities.
Claim 7
Dependent Claim
30 words
The tweezers according to claim 1, which said buttons each have a plurality of concavities and said rolling contact bearing means comprise cylindrical steel rollers rotatably secured within said concavities.
Claim 8
Dependent Claim
32 words
The tweezers according to claim 1, in which said shaft has a cap member at the end portion thereof, said second sleeve being formed on the outer end of said cap member.
Claim 9
Dependent Claim
29 words
The tweezers according to claim 1, in which said housing has an end portion which has a through-hole having a diameter slightly larger than the diameter of said shaft.
Claim 10
Dependent Claim
23 words
The tweezers according to claim 1, in which said buttons each have projections for preventing the buttons from moving out of said openings.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |