← Back to Patent Explorer
US4024587A Expired / Lapsed US ⏱️ 0.0 years remaining

Helmet conversion kit safety helmet

Assignee: Griffin Products Inc
•
Filing: 1976-03-01
•
Granted: 1977-05-24
•
Expires: 1996-03-01
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A full face safety helmet comprises a helmet portion, of the usual, generally part spherical form adapted to cover and protect the wearer's skull, and a chin guard member in the form of a closed loop of impact resistant material. The chin guard member has inwardly inclined side walls, and the bottom of the helmet is received in these side walls as an interference, cone-and-wedge fit. The chin guard member also has protruberances on its side walls adapted to engage the lower forward edge of the helmet portion, to protect the wearer against blows on the front of the chin guard member. The helmet portion and chin guard member are releasably secured together, so that the helmet can if desired be used as a full coverage safety helmet, without the chin guard.

Inventors

  • 👤 John Cowper Barford

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 10:29
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/32; A42B3/326

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 120 words
A chin guard member for cooperation with the lower part of a full coverage safety helmet; said chin guard member comprising a closed loop of impact resistant material; the chin guard member having side walls with inner faces inclined inwardly in a downwards direction at least at the rear portion thereof, and adapted to receive as an interference fit therebetween the lower part of a full coverage safety helmet; the chin guard member having on the inner faces of the side walls inwardly extending protruberances adapted to engage lower forward edges of a full coverage safety helmet when in interference fit between said side walls; means on the chin guard member for securing it to a full face safety helmet.
Claim 2
Dependent Claim 120 words
A chin guard member for cooperation with the lower part of a full coverage safety helmet; said chin guard member comprising a closed loop of impact resistant material; the chin guard member having side walls with inner faces inclined inwardly in a downwards direction at least at the rear portion thereof, and adapted to receive as an interference fit therebetween the lower part of a full coverage safety helmet; the chin guard member having on the inner faces of the side walls inwardly extending protruberances adapted to engage lower forward edges of a full coverage safety helmet when in interference fit between said side walls; means on the chin guard member for securing it to a full face safety helmet.
Claim 3
Dependent Claim 26 words
The chin guard member of claim 1 having a bottom edge which is generally elliptical as viewed in underneath plan, and lies in a transverse plane.
Claim 4
Dependent Claim 86 words
The chin guard member of claim 1 having: a front side wall inclined inwardly in a downward direction; an inwardly extending lateral rim on the upper edge of said front side wall; an energy absorbing pad secured in the cavity formed between the front side wall and the lateral rim thereof; said energy absorbing pad extending around said front side wall and being adapted to be positioned forwardly of the wearer's chin when the chin guard member is worn secured to a full coverage safety helmet.
Claim 5
Dependent Claim 133 words
A full face safety helmet comprising: a helmet portion adapted to cover and protect the skull of the wearer; a rigid chin guard member secured to the helmet portion and adapted to extend in front of and protect the wearer's chin; the helmet portion and chin guard member defining between them a face aperture; the helmet portion having lower rear walls inclined inwardly in a downwards direction; the chin guard member comprising a closed loop of impact resistant material and having side walls with inner faces inclined inwardly in a downwards direction, and adapted to receive the inclined lower walls of the helmet portion as an interference fit therebetween; the chin guard member also having opposed inwardly extending protruberances on the side walls thereof engaging the lower forward edge of the helmet portion.
Claim 6
Dependent Claim 133 words
A full face safety helmet comprising: a helmet portion adapted to cover and protect the skull of the wearer; a rigid chin guard member secured to the helmet portion and adapted to extend in front of and protect the wearer's chin; the helmet portion and chin guard member defining between them a face aperture; the helmet portion having lower rear walls inclined inwardly in a downwards direction; the chin guard member comprising a closed loop of impact resistant material and having side walls with inner faces inclined inwardly in a downwards direction, and adapted to receive the inclined lower walls of the helmet portion as an interference fit therebetween; the chin guard member also having opposed inwardly extending protruberances on the side walls thereof engaging the lower forward edge of the helmet portion.
Claim 7
Dependent Claim 18 words
The safety helmet of claim 4 wherein the chin guard member is releasably secured to the helmet portion.
Claim 8
Dependent Claim 34 words
The safety helmet of claim 4 wherein the chin guard member includes an energy absorbing pad received within the forward part thereof to be positioned between the chin guard member and the wearer's chin.
Claim 9
Dependent Claim 44 words
The safety helmet of claim 6 also including a first grip edging strip adapted to fit over the forward upper edge of the chin guard member and the upper front edge of the helmet portion, to extend around the periphery of the face aperture.
Claim 10
Dependent Claim 34 words
The safety helmet of claim 7 also including a second grip edging strip adapted to fit around the lower edge of the chin guard member and the lower rear edge of the helmet portion.
Claim 11
Dependent Claim 67 words
The safety helmet of claim 5, also comprising a pair of brackets removably secured one to each side of the helmet portion, one fastening means of each said bracket cooperating with the chin guard member and the helmet portion so as to secure the chin guard member to the helmet portion, each of said brackets being provided with external fastening means for removably securing thereto a visor.
Claim 12
Dependent Claim 180 words
Means for converting a full coverage safety helmet to a full face safety helmet, said means comprising: a chin guard member comprising a closed loop of impact resistant materials; the chin guard member having side walls with inner faces inclined downwardly in a downwards direction at least at the rear portion thereof, and adapted to receive as an interference fit therebetween the lower part of a full coverage safety helmet; the chin guard member having on the inner faces of the side walls inwardly extending protruberances adapted to engage lower forward edges of a full coverage safety helmet when in interference fit between said side walls; a pair of releaseable brackets, each said bracket having inwardly presented fastening means for cooperation with complementary fastening means on the helmet portion, and outwardly presented fastening means for cooperation with complementary fastening means on a visor portion; the cooperation of at least on of the fastening means on the releasable bracket with a complementary fastening means on the helmet portion comprising means for releasably securing the helmet portion to the chin guard member.
Claim 13
Dependent Claim 180 words
Means for converting a full coverage safety helmet to a full face safety helmet, said means comprising: a chin guard member comprising a closed loop of impact resistant materials; the chin guard member having side walls with inner faces inclined downwardly in a downwards direction at least at the rear portion thereof, and adapted to receive as an interference fit therebetween the lower part of a full coverage safety helmet; the chin guard member having on the inner faces of the side walls inwardly extending protruberances adapted to engage lower forward edges of a full coverage safety helmet when in interference fit between said side walls; a pair of releaseable brackets, each said bracket having inwardly presented fastening means for cooperation with complementary fastening means on the helmet portion, and outwardly presented fastening means for cooperation with complementary fastening means on a visor portion; the cooperation of at least on of the fastening means on the releasable bracket with a complementary fastening means on the helmet portion comprising means for releasably securing the helmet portion to the chin guard member.

References Cited (Backward Citations)

CA640428A Cited
US2777127A Cited
US2908911A Cited
US3423758A Cited
US3478365A Cited
US3548410A Cited
US3588914A Cited
US3628191A Cited
US3624663A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-05-23 1980-11-22 1981-05-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-05-23 1984-11-22 1985-05-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-05-23 1988-11-22 1989-05-24 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag