Patent US4528440A successfully refreshed from Google Patents.
US4528440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand held hot air dryer with retractable cord
Assignee: Individual
•
Filing: 1983-08-30
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Granted: 1985-07-09
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Expires: 2003-08-30
Abstract
Abstract A hand held hot air dryer having a manually operated reel disposed within its housing for retracting and storing an electric cord therein when not in use. The reel is connected to a conductor coated insulator disc with connection to the cord and brushes are connected to the motor and heater, thereby to provide electrical connection. A ratchet and ratchet wheel may be provided to enable locking of the reel as the winding of the cord progresses. Means are provided for preventing the cord from being pulled away from contact with the disc when the cord is being pulled out for use.
Inventors
- 👤 Naoki Ishihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:14
CPC Classifications
A; A45; A45D; A45D20/00; A45D20/04; A45D20/08; A45D20/10; A45D20/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
183 words
In a hand held hot air dryer comprising a housing having a nozzle portion, a handle portion and a central portion therebetween, a motor within said central portion and having a rotatable shaft, a fan disposed in said central portion and driven by said shaft of said motor for driving air through said nozzle portion, heater disposed in said nozzle portion for heating air blown by said fan prior to exit through an opening in said nozzle portion, and electric cord connected to said motor and said heater; the improvement comprising a rotatable cylindrical reel completely disposed within said central portion of said housing and about said motor and having an axis coaxial with said shaft for retracting and storing in a wound up condition said electric cord, said reel being located outside of the path of air driven by said fan; a crank connected to said reel for manually winding up said reel thereby to wind up said electric cord, said crank being disposed outside of said central portion of said housing; and locking means for holding said reel at different positions.
Claim 2
Dependent Claim
183 words
In a hand held hot air dryer comprising a housing having a nozzle portion, a handle portion and a central portion therebetween, a motor within said central portion and having a rotatable shaft, a fan disposed in said central portion and driven by said shaft of said motor for driving air through said nozzle portion, heater disposed in said nozzle portion for heating air blown by said fan prior to exit through an opening in said nozzle portion, and electric cord connected to said motor and said heater; the improvement comprising a rotatable cylindrical reel completely disposed within said central portion of said housing and about said motor and having an axis coaxial with said shaft for retracting and storing in a wound up condition said electric cord, said reel being located outside of the path of air driven by said fan; a crank connected to said reel for manually winding up said reel thereby to wind up said electric cord, said crank being disposed outside of said central portion of said housing; and locking means for holding said reel at different positions.
Claim 3
Dependent Claim
53 words
The dryer of claim 1, wherein said crank comprises a first part, a shaft connected to said first part and to said reel, a second part connected foldably to said first part when not in use and extendible when in use, and a knob attached to said second part at an unconnected end.
Claim 4
Dependent Claim
104 words
The dryer of claim 1, wherein said crank comprises a lever, a knob attached to one end of said lever, and a rotatable piece and a shaft, said shaft being attached to said rotatable piece and attached to said reel, said rotatable piece having a channel therein at a top thereof, said lever being disposed to be foldable into said channel when not in use, and extendible outside of said channel when in use at the end to which said knob is attached, with said lever being movable by manual grasping of said knob to move said rotatable piece thereby to rotate said reel.
Claim 5
Dependent Claim
34 words
The dryer of claim 2 or 3, wherein said locking means comprises a ratchet wheel attached to said shaft, and a ratchet, and button means resiliently operating said ratchet for manually releasing said ratchet.
Claim 6
Dependent Claim
68 words
The dryer of claim 1, wherein said cord is connected to said motor and said heater by a circular disc attached to said reel and driven by said reel, said disc being of insulating material and having conductive strips attached on one side of said disc to said cord, and on another side of said disc to brushes, said brushes being connected to said heater and said motor.
Claim 7
Dependent Claim
28 words
The dryer of claim 1, wherein said cord has a first stopper means attached thereto for stopping said cord from exiting said handle portion at a predetermined point.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-08 | 1989-01-07 | 1989-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-08 | 1993-01-07 | 1993-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-08 | 1997-01-07 | 1997-07-09 | $7700.00 | Window Closed / Lapsed |