Patent US4398306A successfully refreshed from Google Patents.
US4398306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chin strap safety attachment for protective headgear
Assignee: University of Michigan (System)
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Filing: 1981-05-28
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Granted: 1983-08-16
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Expires: 2001-05-28
Abstract
Abstract A chin strap safety attachment including a high impact resistant rigid anchor insert mounted upon a chin strap of the protective headgear. The anchor insert has a tongue which is shaped so as to be insertable into an opening in a coacting anchor plate when the anchor insert is rotated from its normal locking position in engagement with the anchor plate. A Lift-the-Dot fastener, adjustably mounted on the free end of the chin strap adjacent the anchor insert, engages the anchor plate to provide additional securance of the chin strap.
Inventors
- 👤 Elwyn R. Gooding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:35
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/16; A42B3/08; Y; Y10; Y10T; Y10T24/00; Y10T24/47
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
180 words
A safety attachment for securing protective headgear to a wearer's head comprising: a chin strap mountable to one side of the protective headgear, extending therefrom so as to engage the wearer's chin and terminate at a free end, an anchor plate having an opening therein and mountable to the other side of the protective headgear in alignment with said free end of the chin strap, anchor insert means mounted on said chin strap at a position adjacent to and spaced from said free end of the chin strap, said insert means being insertable in said anchor plate opening, engagement means on said anchor insert engageable with said anchor plate on opposite sides of said opening when tension is placed upon said chin strap and said anchor insert so as to prevent unintentional removal of the protective headgear, and snap fastener means on said free end of the chin strap engageable with said anchor plate so as to further secure the chin strap when tension is placed thereon and to maintain proper alignment of said anchor insert relative to said opening.
Claim 2
Dependent Claim
180 words
A safety attachment for securing protective headgear to a wearer's head comprising: a chin strap mountable to one side of the protective headgear, extending therefrom so as to engage the wearer's chin and terminate at a free end, an anchor plate having an opening therein and mountable to the other side of the protective headgear in alignment with said free end of the chin strap, anchor insert means mounted on said chin strap at a position adjacent to and spaced from said free end of the chin strap, said insert means being insertable in said anchor plate opening, engagement means on said anchor insert engageable with said anchor plate on opposite sides of said opening when tension is placed upon said chin strap and said anchor insert so as to prevent unintentional removal of the protective headgear, and snap fastener means on said free end of the chin strap engageable with said anchor plate so as to further secure the chin strap when tension is placed thereon and to maintain proper alignment of said anchor insert relative to said opening.
Claim 3
Dependent Claim
85 words
A safety attachment for securing protective headgear to a wearer's head as recited in claim 1 wherein said opening in said anchor plate is elongated in a direction longitudinally of said chin strap in a position of said anchor insert means in said opening, and wherein said anchor insert means is insertable in and withdrawable from said elongated opening by rotation of said anchor insert through an angular displacement with respect to the position in which said engagement means is engageable with said anchor plate.
Claim 4
Dependent Claim
34 words
A safety attachment for securing protective headgear to a wearer's head as recited in claim 1 wherein said anchor insert means and said snap fastener means are selectively adjustable longitudinally along said chin strap.
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) | 1986-08-15 | 1987-02-14 | 1987-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-15 | 1991-02-14 | 1991-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-15 | 1995-02-14 | 1995-08-16 | $7700.00 | Window Closed / Lapsed |