Patent US3872553A successfully refreshed from Google Patents.
US3872553A
Expired / Lapsed
US
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Slider for slide fasteners
Assignee: Talon Inc
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Filing: 1972-09-18
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Granted: 1975-03-25
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Expires: 1992-09-18
Abstract
Abstract A slide fastener has an improved slider in which elbow members of each of the angulated flanges defining the slider channel have a chamfered inner edge whereby the slider exhibits improved operational smoothness, increased conformity to the configuration of the fastener under lateral loads and reduced fastener binding, cutting and wear.
Inventors
- 👤 George B Moertel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:00
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/24; A44B19/26; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2539; Y10T24/2557; Y10T24/2561; Y10T24/2582; Y10T24/2584
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
184 words
A slider for a slide fastener having filamentary coupling elements attached to a pair of carrier tapes by stitching threads, the slider comprising a main body having a pair of spaced, parallel wing members and a longitudinal center line, a pair of flanges extending respectively from opposite lateral edges of each of said pair of wing members toward each other to define a channel for slidably receiving said carrier tapes, each of said flanges having a first portion substantially parallel to said center line, each of said flanges having a second portion diverging outwardly from said center line, each of said flanges having an elbow joining said first portion and said second portion, and a single canted planar surface disposed on the inside of each of said flanges at said elbow and extending onto both of said first and second portions thereof, each of said canted planar surfaces forming a chamfer of said elbow and defining a plane obliquely angled with respect to said center line such that said canted planar surfaces permit slider movement without causing binding or wearing of the stitching threads.
Claim 2
Dependent Claim
184 words
A slider for a slide fastener having filamentary coupling elements attached to a pair of carrier tapes by stitching threads, the slider comprising a main body having a pair of spaced, parallel wing members and a longitudinal center line, a pair of flanges extending respectively from opposite lateral edges of each of said pair of wing members toward each other to define a channel for slidably receiving said carrier tapes, each of said flanges having a first portion substantially parallel to said center line, each of said flanges having a second portion diverging outwardly from said center line, each of said flanges having an elbow joining said first portion and said second portion, and a single canted planar surface disposed on the inside of each of said flanges at said elbow and extending onto both of said first and second portions thereof, each of said canted planar surfaces forming a chamfer of said elbow and defining a plane obliquely angled with respect to said center line such that said canted planar surfaces permit slider movement without causing binding or wearing of the stitching threads.
Claim 3
Dependent Claim
47 words
A slider for a slide fastener as claimed in claim 1 wherein each of said outwardly divergent second portions of said flanges is angled away from said center line at an angle greater than that made by said canted planar surface with respect to said center line.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |