US4174714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for permanent removal of hair
Assignee: Individual
•
Filing: 1977-09-28
•
Granted: 1979-11-20
•
Expires: 1997-09-28
Abstract
Abstract Hair is permanently removed by a method of applying concentrated high frequency waves to a hair very close but slightly spaced from the skin so as to induce conduction along the internal section (medulla) of the hair shaft and downwardly to the matrix area to bring about permanent damage to the matrix area and release of the hair.
Inventors
- 👤 Thomas L. Mehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:12
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B2018/00315; A61B2018/00452; A61B2018/00476
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
140 words
The method of removing hair and inhibiting future regrowth comprising the steps of: (a) reducing hair length such that the end thereof is relatively close to the skin (b) grasping the reduced length of hair between small area conductive hair engaging surfaces each one of which are mounted on one of two relatively movable arms which are covered with high frequency electrical insulation at the ends thereof, the hair engaging surfaces being adjacent to but spaced from the periphery of the insulated end portions (c) moving the insulated end portions of the arms into engagement with the skin (d) applying high frequency electrical waves to one of the small area conductive hair engaging surfaces, and (e) holding the hair engaging surfaces in firm engagement in position against the hair while applying the high frequency electrical waves until the hair releases.
Claim 2
Independent Claim
140 words
The method of removing hair and inhibiting future regrowth comprising the steps of: (a) reducing hair length such that the end thereof is relatively close to the skin (b) grasping the reduced length of hair between small area conductive hair engaging surfaces each one of which are mounted on one of two relatively movable arms which are covered with high frequency electrical insulation at the ends thereof, the hair engaging surfaces being adjacent to but spaced from the periphery of the insulated end portions (c) moving the insulated end portions of the arms into engagement with the skin (d) applying high frequency electrical waves to one of the small area conductive hair engaging surfaces, and (e) holding the hair engaging surfaces in firm engagement in position against the hair while applying the high frequency electrical waves until the hair releases.
Claim 3
Dependent Claim
42 words
The method of removing hair and inhibiting future regrowth as set forth in claim 1, including the steps of: (a) reducing hair length by shaving the hair close to the skin, and (b) allowing two to five days of hair growth time.
Claim 4
Dependent Claim
42 words
The method of removing hair and inhibiting future regrowth as set forth in claim 1, including the step of: (a) reducing hair length by cutting the hair at a distance of from one-sixteenth to five-sixteenths of an inch from the skin surface.
Claim 5
Dependent Claim
37 words
The method of removing hair and inhibiting future regrowth as set forth in claim 1, including the step of: (a) pressing the two insulative portions down into the skin adjacent the hair prior to grasping the hair.
Claim 6
Dependent Claim
37 words
The method of removing hair and inhibiting furture regrowth as set forth in claim 1, including the step of: (a) applying the high frequency electrical wave at a voltage of between one hundred to six hundred volts.
Claim 7
Dependent Claim
40 words
The method of removing hair and inhibiting future regrowth as set forth in claim 1, including the step of: (a) grasping the hair between a very finely ridged conductive surface to enhance gripping and electrical transmission quality to the hair.
Claim 8
Dependent Claim
53 words
The method of removing hair and inhibiting future regrowth as set forth in claim 1, including the steps of: (a) concentrating the high frequency electrical waves in the area between the closed hair engaging surfaces so as to transmit such waves down through the medulla portion of the hair shaft to the matrix.
Claim 9
Dependent Claim
38 words
The method of removing hair and inhibiting future regrowth as set forth in claim 1, including the step of: (a) applying the high frequency electrical waves to the hair for a period of from two to forty-five seconds.
Claim 10
Independent Claim
92 words
The method of removing hair which includes the steps of: (a) grasping a hair at a contact point a short distance above the skin between two opposed conductive surfaces of a tweezer-type device, one of which is connected to a radio frequency source (b) isolating the conductive surfaces and the contact point with radio frequency insulation material to confine that area, and (c) concentrating sufficient radio frequency energy across the hair at the contact point in such a degree that it travels down the medulla of the hair to the matrix area.
Claim 11
Independent Claim
92 words
The method of removing hair which includes the steps of: (a) grasping a hair at a contact point a short distance above the skin between two opposed conductive surfaces of a tweezer-type device, one of which is connected to a radio frequency source (b) isolating the conductive surfaces and the contact point with radio frequency insulation material to confine that area, and (c) concentrating sufficient radio frequency energy across the hair at the contact point in such a degree that it travels down the medulla of the hair to the matrix area.
Claim 12
Dependent Claim
15 words
The method of removing hair as set forth in claim 9, including the step of:
Claim 13
Dependent Claim
28 words
(a) grasping the hair at a distance of from one thirty-second of an inch above the surface of the skin to five-sixteenths of an inch above the skin.
Claim 14
Dependent Claim
28 words
(a) grasping the hair at a distance of from one thirty-second of an inch above the surface of the skin to five-sixteenths of an inch above the skin.
Claim 15
Dependent Claim
32 words
The method of removing hair as set forth in claim 9, including the step of: (a) limiting the area of each conductive surface to less than one three-hundredths of a square inch.
Claim 16
Dependent Claim
36 words
The method of removing hair as set forth in claim 9, including the step of: (a) applying a radio frequency having a voltage of between one to six hundred volts to one of the conductive surfaces.
Claim 17
Dependent Claim
35 words
The method of removing hair as set forth in claim 9, including the step of: (a) placing the conductive surfaces on arms of the tweezer-type device at a point slightly removed from the tips thereof.
Claim 18
Dependent Claim
54 words
The method of removing hair as set forth in claim 9, including the steps of: (a) limiting the area of each conductive surface to concentrate radio frequency energy and (b) positioning the conductive surfaces so that there is no radio frequency leakage to the skin surface and internal resistance of the hair is minimized.
Claim 19
Dependent Claim
54 words
The method of removing hair as set forth in claim 9, including the steps of: (a) moving insulated end portions of the tweezer-type device into engagement with the skin prior to grasping the hair, and (b) holding the two opposed conductive surfaces in firm engagement with the hair while applying the radio frequency energy.
Claim 20
Dependent Claim
40 words
The method of removing hair as set forth in claim 9, including the step of: (a) reducing the length of the hair prior to grasping such that the entire end of the hair is enclosed by the isolating conductive surfaces.
Claim 21
Dependent Claim
43 words
The method of removing hair as set forth in claim 9, including the step of: (a) automatically restricting application of radio frequency energy to only when the point of contact and the entire area of the conductive surfaces have been radio frequency isolated.
Claim 22
Dependent Claim
42 words
The method of removing hair as set forth in claim 9, including the step of: (a) focusing the radio frequency energy such that it is ddischarged in a narrow area between the conductive surfaces substantially perpendicular to the length of the hair.
Claim 23
Dependent Claim
49 words
The method of removing hair as set forth in claim 9, including the step of: (a) sufficiently enclosing the point of contact with the hair and the conductive surfaces with radio frequency insulation material such that radio frequency leakage along the outside of the hair shaft is substantially precluded.
Claim 24
Dependent Claim
30 words
The method of removing hair as set forth in claim 9, including the step of: (a) applying the radio frequency energy to the point of contact until the hair releases.
Claim 25
Dependent Claim
47 words
In the method of removing hair by applying radio frequency energy to the hair shaft by grasping it with a tweezer-like device through which radio frequency energy is passed, including the step of: (a) reducing the length of the hair prior to application of radio frequency energy.
Claim 26
Dependent Claim
47 words
In the method of removing hair by applying radio frequency energy to the hair shaft by grasping it with a tweezer-like device through which radio frequency energy is passed, including the step of: (a) reducing the length of the hair prior to application of radio frequency energy.
Claim 27
Dependent Claim
70 words
In the method of removing hair by applying radio frequency energy to the hair shaft by a tweezer-like device, as set forth in claim 21, and including the steps of: (a) focusing radio frequency energy at a point on the hair shaft close to the skin surface, and (b) using the medulla of the hair to carry most of the radio frequency energy to the matrix area of the hair.
Claim 28
Dependent Claim
64 words
In the method of removing hair by applying radio frequency energy to the hair shaft by grasping it with a tweezer-like device through which radio frequency energy is passed, including the step of: (a) focusing radio frequency energy at a point on the hair shaft close to the skin surface such that it travels down the medulla of the hair to the matrix area.
Claim 29
Dependent Claim
64 words
In the method of removing hair by applying radio frequency energy to the hair shaft by grasping it with a tweezer-like device through which radio frequency energy is passed, including the step of: (a) focusing radio frequency energy at a point on the hair shaft close to the skin surface such that it travels down the medulla of the hair to the matrix area.
Claim 30
Dependent Claim
55 words
In the method of removing hair by applying radio frequency energy to the hair shaft by grasping it with a tweezer-like device through which radio frequency energy is passed, including the step of: (a) using the medulla of the hair to carry most of the radio frequency energy to the matrix area of the hair.
Claim 31
Dependent Claim
55 words
In the method of removing hair by applying radio frequency energy to the hair shaft by grasping it with a tweezer-like device through which radio frequency energy is passed, including the step of: (a) using the medulla of the hair to carry most of the radio frequency energy to the matrix area of the hair.
References Cited (Backward Citations)
US1071978A
Cited
US2417530A
Cited
US2700975A
Cited
SU138672A1
Cited
US2888927A
Cited
US3831607A
Cited
US3916909A
Cited
US3980085A
Cited
US4033350A
Cited
US4041952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-19 | 1983-05-21 | 1983-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-19 | 1987-05-21 | 1987-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-19 | 1991-05-21 | 1991-11-20 | $7700.00 | Window Closed / Lapsed |