US3861497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Life line
Assignee: TSAI SHI CHO
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Filing: 1974-04-30
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Granted: 1975-01-21
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Expires: 1994-04-30
Abstract
Abstract A life line comprising a rope, a speed regulator, a safety belt and a checking steel wire. The speed regulator is substantially in the form of a cylinder having a penetrating hole for passing the rope and is made of a material permitting its inner peripheral surface to come into contact with the rope to thereby regulate descending speed when the speed regulator is grasped by the hands. The safety belt is fixed to the speed regulator. The checking steel wire has one end connected to the safety belt and the other end surrounding the rope and attached to a metal retainer fixed to the speed regulator.
Inventors
- 👤 Shi-Cho Tsai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:04
CPC Classifications
A; A62; A62B; A62B1/00; A62B1/06; A62B1/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
146 words
A life line comprising a rope, a speed regulator, a safety belt and a checking steel wire, said speed regulator having a substantially cylindrical main body formed with a penetrating hole for passing said rope, said main body being made of a material permitting its inner peripheral surface to come into contact with said rope to thereby regulate descending speed when said main body is grasped by the hands, said safety belt being fixed to said main body, said checking steel wire having one end connected to said safety belt and the other end surrounding said rope and attached to a metal retainer fixed to said main body, said checking steel wire being engageable into said rope by the weight of the human body acting on said safety belt when the hands are removed from said main body to thereby prevent the human body from dropping.
Claim 2
Dependent Claim
146 words
A life line comprising a rope, a speed regulator, a safety belt and a checking steel wire, said speed regulator having a substantially cylindrical main body formed with a penetrating hole for passing said rope, said main body being made of a material permitting its inner peripheral surface to come into contact with said rope to thereby regulate descending speed when said main body is grasped by the hands, said safety belt being fixed to said main body, said checking steel wire having one end connected to said safety belt and the other end surrounding said rope and attached to a metal retainer fixed to said main body, said checking steel wire being engageable into said rope by the weight of the human body acting on said safety belt when the hands are removed from said main body to thereby prevent the human body from dropping.
Claim 3
Dependent Claim
16 words
The life line as set forth in claim 1 wherein said material is rubber or plastics.
Claim 4
Dependent Claim
30 words
The life line as set forth in claim 2 wherein said speed regulator is shaped in the form of a substantially cylindrical integral body having the penetrating hole axially thereof.
Claim 5
Dependent Claim
30 words
The life line as set forth in claim 2 wherein said speed regulator comprises two members joined together in the form of a cylinder having the penetrating hole axially thereof.
Claim 6
Dependent Claim
31 words
The life line as set forth in claim 4 wherein one of said two members is made of flexible soft material and the other member is made of a hard material.
Claim 7
Dependent Claim
31 words
The life line as set forth in claim 4 wherein said two members are both made of a hard material and joined together by the fixed portion of said safety belt.
Claim 8
Dependent Claim
44 words
The life line as set forth in claim 1 wherein said speed regulator comprises two members made of a metal material and joined together by the fixed portion of said safety belt in the form of a cylinder having the penetrating hole axially thereof.
Claim 9
Dependent Claim
51 words
The life line as set forth in claim 1 wherein said speed regulator comprises two members joined together substantially in the form of a cylinder having the penetrating hole axially thereof, one of said members being made of a flexible soft material, the other member being made of a metal material.
Claim 10
Dependent Claim
23 words
The life line as set forth in claim 1 wherein said checking steel wire is serrated on its inner periphery surrounding said rope.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |