US3732580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair washing machine
Assignee: Individual
•
Filing: 1971-06-18
•
Granted: 1973-05-15
•
Expires: 1991-06-18
Abstract
Abstract Automatic hair washing device comprising a helmet having a plurality of showers, an electric circuit for water heating with power dissipation depending on the water temperature, and an electric circuit for selectively supplying water only to some showers at a time and alternating pure water with water containing hair treatment solutions. Hair washing is carried out with said hair continuously moved by alternate water jets, so that the cleaning thereof is perfect.
Inventors
- 👤 E Fava
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:27
CPC Classifications
A; A45; A45D; A45D19/00; A45D19/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
224 words
A hair washing device comprising: a helmet having seals along its free edge, shower heads arranged within said helmet, and an outlet opening; a liquid-supply means connected to said shower heads and connectable to a water supply, said liquid-supply means including a liquid reservoir having a level indicator therein and a drain, electrovalves, pump means, and liquid conduit means, said liquid conduit means connecting said reservoir to said pump means, said pump means to said electrovalves, and individual ones of said electrovalves to corresponding ones at said shower heads; a hair-treatment-liquid supply means including at least one container for a hair-treatment-liquid, and a delivery pump, said container and said pump being operatively connected to at least one of said shower heads; a temperature-control means including a heater in said reservoir, a heat-responsive element in said reservoir for use in controlling the output of said heater, and a manually adjustable potentiometer for setting the control temperature; and electric circuitry connected to said level indicator, said electrovalves, said pump means, said delivery pump, and said temperature-control means, said circuitry including a timing device controlling said pump means and delivery pump and selectively controlling said electrovalves, said level indicator being electrically connected to said timing device and causing it to step-advance and being electrically connected to said temperature-control means to selectively switch said heater on and off.
Claim 2
Dependent Claim
224 words
A hair washing device comprising: a helmet having seals along its free edge, shower heads arranged within said helmet, and an outlet opening; a liquid-supply means connected to said shower heads and connectable to a water supply, said liquid-supply means including a liquid reservoir having a level indicator therein and a drain, electrovalves, pump means, and liquid conduit means, said liquid conduit means connecting said reservoir to said pump means, said pump means to said electrovalves, and individual ones of said electrovalves to corresponding ones at said shower heads; a hair-treatment-liquid supply means including at least one container for a hair-treatment-liquid, and a delivery pump, said container and said pump being operatively connected to at least one of said shower heads; a temperature-control means including a heater in said reservoir, a heat-responsive element in said reservoir for use in controlling the output of said heater, and a manually adjustable potentiometer for setting the control temperature; and electric circuitry connected to said level indicator, said electrovalves, said pump means, said delivery pump, and said temperature-control means, said circuitry including a timing device controlling said pump means and delivery pump and selectively controlling said electrovalves, said level indicator being electrically connected to said timing device and causing it to step-advance and being electrically connected to said temperature-control means to selectively switch said heater on and off.
Claim 3
Dependent Claim
19 words
The device as claimed in claim 1, including a discharge conduit connecting said outlet opening to said liquid reservoir.
Claim 4
Dependent Claim
24 words
The device as claimed in claim 1, wherein said reservoir drain includes a drain pump, said drain pump being controlled by said timing device.
Claim 5
Dependent Claim
77 words
The device as claimed in claim 1, wherein said liquid conduit means includes a plurality of distinct tubings connecting said electrovalves to said shower heads, and wherein said electric circuitry includes: a current amplifier operatively connected to said heat-responsive element and to said potentiometer, a current rectifier supplying current to said amplifier; and a bidirectional semiconductor connected to said amplifier and to said heater, whereby the current going to said heater from said heat-responsive element is amplified.
Claim 6
Dependent Claim
63 words
The device as claimed in claim 1, wherein said electric circuit including a timing device for selectively controlling said electrovalves comprises: a variable period oscillator connected to said timing device; a bistable multivibrator connected to said oscillator; and at least one relay connected to said multivibrator for controlling the electrovalves in the liquid conduit means connecting said pump means with said shower heads.
Claim 7
Dependent Claim
14 words
The device as claimed in claim 1, wherein said heat-responsive element is a thermistor.
Claim 8
Dependent Claim
14 words
The device as claimed in claim 5, wherein said relay is a multi-contact relay.
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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |