Patent US4927987A successfully refreshed from Google Patents.
Patent US7254843B2 successfully refreshed from Google Patents.
US7254843B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact absorbing, modular helmet
Assignee: Individual
•
Filing: 2006-06-29
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Granted: 2007-08-14
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Expires: 2026-06-29
Abstract
Abstract An impact absorbing, modular helmet that uses impact absorbing layers outside the hard casing of the helmet to prevent and/or reduce injury to the user is described. The protective layers on the outer side of the hard casing increase the time of impact and thereby reduces the intensity of the impact forces to reduce their injury potential. The outermost layer would preferably be made of lightweight yet rigid, durable material made of polymers, composites or metal alloys with a low friction coefficient. Subsequent layers may be made up of a polymer honeycombed structure and a uniformly consistent impact absorbing polymer material. These impact-absorbing layers may also be made and used as an independent, detachable, external protective cover that may be attached universally over hard casing helmets.
Inventors
- 👤 Srikrishna Talluri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:22
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/06; A42B3/062; A42B3/063; A42B3/069; A42B3/10; A42B3/12; A42B3/121
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
99 words
A protective headgear assembly that reduces the impact forces by spreading them laterally and uses air to resist and decrease the rate of deceleration of the impact forces, said headgear assembly comprising of: an energy absorbent layer made of uniformly consistent viscoelastic material in contact with and placed directly on the outside of a rigid shell; a honeycomb layer with hollow cells and perforated walls for air to flow from one cell to another, in contact with and placed over the visoelastic energy absorbent layer; an outer protective layer over such honeycomb layer, made of lightweight yet rigid material.
Claim 2
Dependent Claim
99 words
A protective headgear assembly that reduces the impact forces by spreading them laterally and uses air to resist and decrease the rate of deceleration of the impact forces, said headgear assembly comprising of: an energy absorbent layer made of uniformly consistent viscoelastic material in contact with and placed directly on the outside of a rigid shell; a honeycomb layer with hollow cells and perforated walls for air to flow from one cell to another, in contact with and placed over the visoelastic energy absorbent layer; an outer protective layer over such honeycomb layer, made of lightweight yet rigid material.
Claim 3
Dependent Claim
18 words
A protective headgear assembly of claim 1 , where the energy absorbent, viscoelastic layer is made of polyurethane.
Claim 4
Dependent Claim
17 words
A protective headgear assembly of claim 1 , where the outer protective layer is made of polymers.
Claim 5
Dependent Claim
20 words
A protective headgear assembly of claim 1 , where the outer protective layer is made of metal or metal alloys.
Claim 6
Dependent Claim
18 words
A protective headgear assembly of claim 1 , where the outer protective layer is made of composite materials.
Claim 7
Dependent Claim
19 words
A protective headgear assembly of claim 1 , where the layers are made of nanomaterials or made using nanotechnology.
Claim 8
Dependent Claim
26 words
A protective headgear assembly of claim 1 , where the layers are modular and each layer can be removed and replaced independent of the other layers.
Claim 9
Dependent Claim
30 words
A protective headgear assembly of claim 1 , where the three layers are manufactured as an independent external assembly that may be used universally over the rigid shell of helmets.
Claim 10
Dependent Claim
77 words
A protective headgear assembly that reduces the impact forces by spreading them laterally and uses air to resist and decrease the rate of deceleration of the impact forces, said headgear comprising of: a honeycomb layer with hollow cells and perforated walls for air to flow from one cell to another, in contact with and placed directly on the outside of a rigid shell; and a protective layer over such honeycomb layer, made of lightweight yet rigid material.
Claim 11
Dependent Claim
77 words
A protective headgear assembly that reduces the impact forces by spreading them laterally and uses air to resist and decrease the rate of deceleration of the impact forces, said headgear comprising of: a honeycomb layer with hollow cells and perforated walls for air to flow from one cell to another, in contact with and placed directly on the outside of a rigid shell; and a protective layer over such honeycomb layer, made of lightweight yet rigid material.
Claim 12
Dependent Claim
17 words
A protective headgear assembly of claim 9 , where the outer protective layer is made of polymers.
Claim 13
Dependent Claim
20 words
A protective headgear assembly of claim 9 , where the outer protective layer is made of metal or metal alloys.
Claim 14
Dependent Claim
18 words
A protective headgear assembly of claim 9 , where the outer protective layer is made of composite materials.
Claim 15
Dependent Claim
19 words
A protective headgear assembly of claim 9 , where the layers are made of nanomaterials or made using nanotechnology.
Claim 16
Dependent Claim
30 words
A protective headgear assembly of claim 9 , where the two layers are manufactured as an independent external assembly that may be used universally over the rigid shell of helmets.
Claim 17
Dependent Claim
69 words
A protective headgear assembly that reduces the impact forces by spreading them laterally and uses air to resist and decrease the rate of deceleration of the impact forces, said headgear comprising of: an energy absorbent layer made of uniformly consistent viscoelastic material, in contact with and placed directly on the outside of a rigid shell; and a protective layer over such honeycomb layer, made of lightweight yet rigid material.
Claim 18
Dependent Claim
69 words
A protective headgear assembly that reduces the impact forces by spreading them laterally and uses air to resist and decrease the rate of deceleration of the impact forces, said headgear comprising of: an energy absorbent layer made of uniformly consistent viscoelastic material, in contact with and placed directly on the outside of a rigid shell; and a protective layer over such honeycomb layer, made of lightweight yet rigid material.
Claim 19
Dependent Claim
17 words
A protective headgear assembly of claim 15 , where the outer protective layer is made of polymers.
Claim 20
Dependent Claim
20 words
A protective headgear assembly of claim 15 , where the outer protective layer is made of metal or metal alloys.
Claim 21
Dependent Claim
18 words
A protective headgear assembly of claim 15 , where the outer protective layer is made of composite materials.
Claim 22
Dependent Claim
19 words
A protective headgear assembly of claim 15 , where the layers are made of nanomaterials or made using nanotechnology.
Claim 23
Dependent Claim
30 words
A protective headgear assembly of claim 15 , where the two layers are manufactured as an independent external assembly that may be used universally over the rigid shell of helmets.
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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) | 2010-08-13 | 2011-02-12 | 2011-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2014-08-13 | 2015-02-12 | 2015-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2018-08-13 | 2019-02-12 | 2019-08-14 | $7700.00 | Window Closed / Lapsed |