Patent US5429289A successfully refreshed from Google Patents.
US5429289A
Expired / Lapsed
US
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Safety leash
Assignee: Unger Licensing Inc
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Filing: 1994-04-08
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Granted: 1995-07-04
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Expires: 2014-04-08
Abstract
Abstract A leash is provided for securing tools to a relatively fixed member to ensure against free fall of the tools in the event that they are dropped by a workman. Spring clips at the ends of the leash have arms that interlock, and respectively are receivable within an aperture in a tool and in clamping engagement around the periphery of a pole, tool, or other member, in order to tether the tool to a member capable of retaining the tool in the event of free fall of the tool.
Inventors
- 👤 William C. Lamson
- 👤 Richard L. Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:58
CPC Classifications
F; F16; F16B; F16B2/00; F16B2/20; F16B2/22; F16B2/24; F16B2/241; F16B2/245; A; A47; A47L; A47L13/00; A47L13/10; A47L13/50; A47L13/51; A47L13/512; B; B25; B25H; B25H3/00; F16B45/00; F16B45/02; F16B45/036; Y; Y10; Y10S; Y10S224/00; Y10S224/904; Y10S24/00; Y10S24/30; Y10S24/43; Y10T; Y10T24/00; Y10T24/34; Y10T24/3484; Y10T24/3485; Y10T24/3487; Y10T24/44; Y10T24/44641; Y10T24/44744; Y10T24/44752; Y10T24/45; Y10T24/45152; Y10T24/45215
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
126 words
A spring clip for attachment to a safety leash; said spring clip being formed from a length of spring steel material providing a central axially continuous portion; a first arm integral with said central portion at one end of said central portion at one end of said central portion; a second arm integral with said central portion at an opposite end of said central portion; interlocking means in the form of a plurality of interfitting teeth formed on each of said first and second arms for securing said arms to each other in a closed position of said spring clip; in which said interfitting teeth inter-fit in a lateral direction in a manner inhibiting axial movement of said first and second arms relative to each other.
Claim 2
Dependent Claim
126 words
A spring clip for attachment to a safety leash; said spring clip being formed from a length of spring steel material providing a central axially continuous portion; a first arm integral with said central portion at one end of said central portion at one end of said central portion; a second arm integral with said central portion at an opposite end of said central portion; interlocking means in the form of a plurality of interfitting teeth formed on each of said first and second arms for securing said arms to each other in a closed position of said spring clip; in which said interfitting teeth inter-fit in a lateral direction in a manner inhibiting axial movement of said first and second arms relative to each other.
Claim 3
Dependent Claim
53 words
The spring clip of claim 1, in which said central portion, said first arm and said second arm each lie in a common plane, whereby forces exerted on said spring clip are transmitted throughout said spring clip as tensional forces in said central portion when said spring clip is in said closed position.
Claim 4
Dependent Claim
32 words
The spring clip of claim 1, further including an eyelet formed at one end of said central portion for the reception of a leash to be permanently affixed to said spring clip.
Claim 5
Dependent Claim
39 words
The spring clip of claim 3, in which an opposite end of said central portion is configured to provide a bight portion said bight portion of said spring clip extending through an aperture in a wall of a tool.
Claim 6
Dependent Claim
44 words
The spring clip of claim 4, in which an end of one of said first and second arms is configured as a piercing tool for use in perforating a friction grip formed of an elastomeric material provided on an outer surface of said tool.
Claim 7
Dependent Claim
32 words
The spring clip of claim 5, in which said piercing tool is positioned entirely within the confines of said spring clip when said spring clip is in a closed and secured position.
Claim 8
Dependent Claim
49 words
The spring clip of claim 1, in which one of said first and second arms is configured to encircle and embrace a peripheral surface of a tool in compressive frictional relation with said peripheral surface of said tool when said spring clip is in a closed and secured position.
Claim 9
Dependent Claim
51 words
The spring clip of claim 1, in which said central portion of said spring clip is axially straight between the ends thereof, whereby to transmit forces exerted on one end of said central portion into a tensile force exerted on said central portion, in the absence of lateral and twisting forces.
Claim 10
Dependent Claim
55 words
The spring clip of claim 1, in which one of said first and second arms includes a detent for reception under spring force in an aperture provided in the other of said arms when said arms are moved into a closed and secured position, whereby to inhibit unintentional release of said arms from one another.
Claim 11
Dependent Claim
42 words
The spring clip of claim 1, in which said first and second arms include locking tabs, which, in the closed and secured position of said spring clip engage each other and prevent lateral movement of said respective arms relative to each other.
Claim 12
Dependent Claim
61 words
The spring clip of claim 1 in combination with a leash, in which a spring clip is provided at each end of said leash, one of said spring clips being attachable to a tool, and the other spring clip being attachable to a relatively immovable object, whereby to limit free fall of said tool in the event that it is dropped.
Claim 13
Dependent Claim
50 words
The spring clip of claim 1 in combination with a leash, in which said leash is provided with a said spring clip at each end of said leash, one of said spring clips being attached to a tool, the other of said clips being attachable directly to a support member.
Claim 14
Dependent Claim
54 words
The spring clip of claim 1 in combination with a leash, in which said leash is provided with a said spring clip at each end of said leash, one of said spring clips being attachable to a tool, the other of said spring clips being attachable to a tool belt worn by a workman.
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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) | 1998-07-03 | 1999-01-02 | 1999-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-03 | 2003-01-02 | 2003-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-03 | 2007-01-02 | 2007-07-04 | $7700.00 | Window Closed / Lapsed |