US3911934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair dryer
Assignee: Individual
•
Filing: 1974-04-01
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Granted: 1975-10-14
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Expires: 1994-04-01
Abstract
Abstract A hair brush or comb with apertures between its bristles or teeth is connected by a hose to an outlet of a blower which includes a heater for the generated airflow. The heater and the blower motor can be adjusted, independently or jointly, to provide different flow rates at a desired air temperature.
Inventors
- 👤 Edward Helbling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:28
CPC Classifications
A; A45; A45D; A45D20/00; A45D20/52
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
154 words
In a hair-grooming implement including a housing, impeller means in said housing for creating an airflow, heating means for said airflow in said housing in cascade with said impeller means, a hollow body with at least one outlet, and a conduit extending from said housing to said body for conveying a flow of hot air to said outlet, the combination therewith of first manually operable control means for said heater means, second manually operable control means for said impeller means, link means for coupling said first and second control means together, and decoupling means for selectively deactivating said link means to enable independent setting of said first and second control means, said link means being effective to translate an adjustment of one of said control means into a compensatory adjustment of the other of said control means for maintaining a substantially constant air temperature at said outlet over a range of different flow rates.
Claim 2
Dependent Claim
154 words
In a hair-grooming implement including a housing, impeller means in said housing for creating an airflow, heating means for said airflow in said housing in cascade with said impeller means, a hollow body with at least one outlet, and a conduit extending from said housing to said body for conveying a flow of hot air to said outlet, the combination therewith of first manually operable control means for said heater means, second manually operable control means for said impeller means, link means for coupling said first and second control means together, and decoupling means for selectively deactivating said link means to enable independent setting of said first and second control means, said link means being effective to translate an adjustment of one of said control means into a compensatory adjustment of the other of said control means for maintaining a substantially constant air temperature at said outlet over a range of different flow rates.
Claim 3
Dependent Claim
46 words
The combination defined in claim 1 wherein said first control means is mechanically connected with said decoupling means for automatically operating same in a home position of said first control means to deactivate said link means for enabling free selection of flow rate independently of temperature.
Claim 4
Dependent Claim
21 words
The combination defined in claim 2 wherein said heating means is unoperated in said home position of said first control means.
Claim 5
Dependent Claim
53 words
The combination defined in claim 2 wherein said decoupling means comprises a spring-biased element juxtaposed with said first control means for manual displacement during displacement of said first control means from said home position into a selected operating position, release of said element in said selected operating position making said link means effective.
Claim 6
Dependent Claim
22 words
The combination defined in claim 4 wherein said first control means comprises a knob and said second control means comprises a pedal.
Claim 7
Dependent Claim
13 words
The combination defined in claim 1 wherein said conduit is a flexible hose.
Claim 8
Dependent Claim
14 words
An implement as defined in claim 1 wherein said housing is of part-spherical configuration.
Claim 9
Dependent Claim
30 words
An implement as defined in claim 1 wherein said body has a multiplicity of hair-stroking projections, said outlet being subdivided into a multiplicity of discharge apertures interspersed with said projections.
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) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |