US4130955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressing or smoothing iron comprising a safety turn-off means located in a heating current circuit
Assignee: Individual
•
Filing: 1977-06-16
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Granted: 1978-12-26
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Expires: 1997-06-16
Abstract
Abstract A pressing iron contains a safety turn-off switch to prevent scorching if the iron is held stationary for too long. An acceleration sensor produces a signal in response to a predetermined acceleration of the iron and an actuating circuit turns off the iron if the iron is not sufficiently accelerated.
Inventors
- 👤 Erich R. Baumgartner
- 👤 Peter Doehler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:37
CPC Classifications
D; D06; D06F; D06F75/00; D06F75/08; D06F75/26; G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/093
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
146 words
A pressing iron containing a safety turn-off means located in a heating-current circuit thereof and comprising: an acceleration sensor for producing a signal in response to a predetermined acceleration of said pressing iron, said acceleration sensor including a movable means located in a channel, for freely moving to a lowermost portion of said channel under the influence of gravity, a channel forming means for forming said channel to have a lowermost portion thereof when said pressing iron is in a pressing attitude, but being shaped so that, upon acceleration of said pressing iron said movable means is moved out of said lowermost portion; a detecting means for detecting predetermined motion of said movable means out of said lowermost portion and producing a signal in response thereto; and, an actuating means operative in response to a predetermined level of said signal for actuating said safety turn-off means.
Claim 2
Dependent Claim
146 words
A pressing iron containing a safety turn-off means located in a heating-current circuit thereof and comprising: an acceleration sensor for producing a signal in response to a predetermined acceleration of said pressing iron, said acceleration sensor including a movable means located in a channel, for freely moving to a lowermost portion of said channel under the influence of gravity, a channel forming means for forming said channel to have a lowermost portion thereof when said pressing iron is in a pressing attitude, but being shaped so that, upon acceleration of said pressing iron said movable means is moved out of said lowermost portion; a detecting means for detecting predetermined motion of said movable means out of said lowermost portion and producing a signal in response thereto; and, an actuating means operative in response to a predetermined level of said signal for actuating said safety turn-off means.
Claim 3
Dependent Claim
12 words
The iron of claim 1 wherein said movable means is a ball.
Claim 4
Dependent Claim
44 words
The iron of claim 1 wherein said channel forming means has transparent walls and said detecting means includes: a radiation-emitting diode arranged at one side of said channel; and, a detector responsive to said radiation and located at the opposite side of said channel.
Claim 5
Dependent Claim
35 words
The iron of claim 1 wherein said channel is of non-magnetizable material and said movable means is magnetic; and, said detecting means includes a magnetic circuit for detecting predetermined motion of said movable magnetic means.
Claim 6
Dependent Claim
32 words
The iron of claim 1 wherein said channel ascends from said lowermost portion for a predetermined distance at a first rate and then, at a threshold point, ascends at a second rate.
Claim 7
Dependent Claim
16 words
The iron of claim 5 wherein said second rate of ascension is less than said first.
Claim 8
Dependent Claim
12 words
The iron of claim 1 wherein said sensor includes a damping means.
Claim 9
Dependent Claim
12 words
The iron of claim 7 wherein said damping means comprises a fluid.
Claim 10
Dependent Claim
26 words
The iron of claim 8 wherein said damping means further comprises a decreasing dimension of said channel relative to the corresponding dimension of said movable means.
Claim 11
Dependent Claim
20 words
The iron of claim 1 wherein said detecting means is for detecting a predetermined maximum motion of said movable means.
Claim 12
Dependent Claim
31 words
The iron of claim 1 wherein said acceleration sensor is clamped in said iron between two vertical plates which are also operative as a mounting means for said safety turn-off means.
Claim 13
Dependent Claim
53 words
The iron of claim 11 wherein said support plates include openings therein and including: a radiation-emitting diode arranged in one of said openings; a radiation detector in another of said openings located opposite said one opening and operative in response to said predetermined level of said signal to actuate said safety turn-off means.
Claim 14
Dependent Claim
22 words
The iron of claim 12 wherein said predetermined level of said signal is a function of said motion of said movable means.
Claim 15
Dependent Claim
12 words
The iron of claim 13 wherein said movable means is a ball.
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) | 1981-12-25 | 1982-06-26 | 1982-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-25 | 1986-06-26 | 1986-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-25 | 1990-06-26 | 1990-12-26 | $7700.00 | Window Closed / Lapsed |