US5383285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scale usable as life line
Assignee: Individual
•
Filing: 1993-03-01
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Granted: 1995-01-24
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Expires: 2013-03-01
Abstract
Abstract A scale usable as a life line includes a metal wire 5 of high tensile strength with graduation 6 in a longitudinal direction thereof, a drum 2 for winding the metal wire 5 thereonto, a casing 1 accommodating the drum 2 while permitting the same to rotate, and a magnifying glass 7 for allowing the graduation 6 to be read, wherein the metal wire 5 of high tensile strength is formed of a strand comprised of a plurality of steel wires of a fine grained composition each having a diameter of 10 to 100 μm and a coat of a synthetic resin covering the strand.
Inventors
- 👤 Masakatsu Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:43
CPC Classifications
A; A62; A62B; A62B1/00; A62B1/06; A62B1/08; A62B1/10; G; G01; G01B; G01B3/00; G01B3/10; G01B3/1084; G01B3/11; G01B3/1005; G01B2003/1023; G01B2003/1025; G01B2003/1058; G01B3/1061; G01B2003/1064; G01B3/1056
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
133 words
A lifesaving apparatus comprising a scale usable as a life line, said scale comprising a wire of high tensile strength with graduations in a longitudinal direction thereof, a drum for winding the wire thereunto, a casing accommodating the drum while permitting the same to rotate, a magnifying glass on said casing for allowing the graduations to be read, and means for carrying a person, wherein the metal wire of high tensile strength is formed of a stranded cable formed of a plurality of strands each having a tensile strength of at least 400 kgf/mm 2 such that said wire is capable of suspending a person, said strands having a coat of a synthetic resin covering the strands, and wherein said means for carrying a person is connected to an end of said scale.
Claim 2
Dependent Claim
133 words
A lifesaving apparatus comprising a scale usable as a life line, said scale comprising a wire of high tensile strength with graduations in a longitudinal direction thereof, a drum for winding the wire thereunto, a casing accommodating the drum while permitting the same to rotate, a magnifying glass on said casing for allowing the graduations to be read, and means for carrying a person, wherein the metal wire of high tensile strength is formed of a stranded cable formed of a plurality of strands each having a tensile strength of at least 400 kgf/mm 2 such that said wire is capable of suspending a person, said strands having a coat of a synthetic resin covering the strands, and wherein said means for carrying a person is connected to an end of said scale.
Claim 3
Dependent Claim
40 words
The lifesaving apparatus of claim 1, where said means for carrying a person comprises a belt for trousers, said belt being connected to an end of said scale, and a pulley for winding said scale positioned adjacent said person's shoulder.
Claim 4
Dependent Claim
26 words
The lifesaving apparatus of claim 1, wherein said strands are steel wires of a fine grained composition each having a diameter of 10 to 100 μm.
Claim 5
Dependent Claim
21 words
The lifesaving apparatus of claim 1, wherein said strands are carbon fibers each having a diameter of 5 to 20 μm.
References Cited (Backward Citations)
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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) | 1998-01-23 | 1998-07-25 | 1999-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-23 | 2002-07-25 | 2003-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-23 | 2006-07-25 | 2007-01-24 | $7700.00 | Window Closed / Lapsed |