US3733634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric skin hygiene brush
Assignee: P&G Hair Care Holding Inc
•
Filing: 1971-05-27
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Granted: 1973-05-22
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Expires: 1991-05-27
Abstract
Abstract A skin cleansing brush including a housing with a battery powered motor mounted therein rotating a tubular drive shaft which removably receives the stem of a brush having soft bristles for engaging the skin of a user. The housing has a configuration to be gripped by a single hand of a user, and an actuator button is disposed on a broad end of the housing to facilitate actuation of the brush.
Inventors
- 👤 A Golbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:28
CPC Classifications
A; A46; A46B; A46B13/00; A46B13/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
226 words
A skin cleansing brush comprising a housing having side walls diverging from a narrow driving end with a passage therein to a broad actuating end, said housing having a configuration to be gripped by a hand of a user; an electric motor mounted in said housing having a rotor; a tubular drive shaft rotatably mounted in said housing in alignment with said passage in said driving end of said housing; reduction gear means disposed in said housing and coupled with said rotor and said drive shaft to drive said drive shaft at a rotational speed less than the rotational speed of said rotor; brush means having a stem removably received in said drive shaft and carrying soft bristles for engaging the skin of a user; switch means disposed in said housing connected with said motor and adapted to be connected with a source of electricity; and actuator means including an elongate post having one end controlling said switch means and terminating at an opposite end at a button exteNding transversely of said post external of said housing; said actuating end of said housing having a recess therein extending over a substantial portion thereof and having a configuration mating with the configuration of said button means, said button being depressible into said recess to actuate said switch means and energize said motor to rotate said brush means.
Claim 2
Dependent Claim
226 words
A skin cleansing brush comprising a housing having side walls diverging from a narrow driving end with a passage therein to a broad actuating end, said housing having a configuration to be gripped by a hand of a user; an electric motor mounted in said housing having a rotor; a tubular drive shaft rotatably mounted in said housing in alignment with said passage in said driving end of said housing; reduction gear means disposed in said housing and coupled with said rotor and said drive shaft to drive said drive shaft at a rotational speed less than the rotational speed of said rotor; brush means having a stem removably received in said drive shaft and carrying soft bristles for engaging the skin of a user; switch means disposed in said housing connected with said motor and adapted to be connected with a source of electricity; and actuator means including an elongate post having one end controlling said switch means and terminating at an opposite end at a button exteNding transversely of said post external of said housing; said actuating end of said housing having a recess therein extending over a substantial portion thereof and having a configuration mating with the configuration of said button means, said button being depressible into said recess to actuate said switch means and energize said motor to rotate said brush means.
Claim 3
Dependent Claim
34 words
A skin cleansing brush as recited in claim 1 wherein said switch means includes a spring biased contact abutting said one end of said elongate post to bias said button away from said recess.
Claim 4
Dependent Claim
48 words
A skin cleansing brush as recited in claim 2 wherein said housing has a sleeve carried at said actuating end, said elongate post being slidably received in said sleeve and carrying a stop adapted to abut an end of said sleeve to limit movement of said elongate post.
Claim 5
Dependent Claim
31 words
A skin cleansing brush as recited in claim 3 and further comprising means disposed within said housing for supporting batteries, said switch means connecting said battery support means with said motor.
Claim 6
Dependent Claim
78 words
A skin cleansing brush as recited in claim 4 wherein said reduction gear means includes a small diameter drive gear secured to said rotor and a large diameter gear peripherally meshing with said drive gear and secured to said drive shaft and said brush means includes a cylindrical base with said soft bristles extending transversely therefrom, said stem of said brush means being centrally secured to said base and received in said drive shaft in a forced fit.
References Cited (Backward Citations)
US1630359A
Cited
US2916752A
Cited
US3106732A
Cited
US3293678A
Cited
US3380093A
Cited
US3378869A
Cited
US3444576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |