US3728741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise protective device
Assignee: Individual
•
Filing: 1970-12-28
•
Granted: 1973-04-24
•
Expires: 1990-12-28
Abstract
Abstract A representative embodiment of a lightweight headgear free of protuberances includes an elongate panel formed of a pair of layered, pliable sections joined together at one end and terminating in a fastener at the other end. The headgear is worn kerchief-style and the pliant sections, consisting of alternating layers of sound attenuating materials, block ambient noise. Proper selection of headgear materials and dimensioning permit the hearing of relatively low frequency speech while attenuating higher frequency noise. By being formed of a pliant material readily conforming to the contours of the head free from protuberances, the headgear is wearable at all times, especially during sleep without undue discomfort to attenuate ambient noise.
Inventors
- 👤 M Lepor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:07
CPC Classifications
A; A61; A61F; A61F11/00; A61F11/06; A61F11/14; A42; A42B; A42B1/00; A42B1/018; A42B1/0186; A42B1/0188
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
172 words
A noise attenuation headgear comprising: elongate panel means including two sections of noise attenuating strata each having at least one pliable porous layer shaped to conform to the lateral contours of the head sandwiched between two pliable impervious layers having protuberance-free smooth outer surfaces also shaped to conform to the lateral contours of the head to permit comfortable prolonged wearing of said headgear even while sleeping, said porous layer and said impervious layers are formed from materials acoustically cooperating to effect a 25 db noise attenuation at predetermined frequencies and to ensure the higher attenuation of said noise in the frequency range above the range of normal speech when each strata is positioned to cover a separate ear and faster means carried on opposite ends of said elongate panel means configured for self engagement to snugly position and hold said two sections in their pliable accommodating relationship about the head to allow the comfortable wearing of said headgear for prolonged periods of time especially during sleep and to further ensure noise attenuation.
Claim 2
Dependent Claim
172 words
A noise attenuation headgear comprising: elongate panel means including two sections of noise attenuating strata each having at least one pliable porous layer shaped to conform to the lateral contours of the head sandwiched between two pliable impervious layers having protuberance-free smooth outer surfaces also shaped to conform to the lateral contours of the head to permit comfortable prolonged wearing of said headgear even while sleeping, said porous layer and said impervious layers are formed from materials acoustically cooperating to effect a 25 db noise attenuation at predetermined frequencies and to ensure the higher attenuation of said noise in the frequency range above the range of normal speech when each strata is positioned to cover a separate ear and faster means carried on opposite ends of said elongate panel means configured for self engagement to snugly position and hold said two sections in their pliable accommodating relationship about the head to allow the comfortable wearing of said headgear for prolonged periods of time especially during sleep and to further ensure noise attenuation.
Claim 3
Dependent Claim
45 words
A headgear according to claim 1 in which said porous layer is fibrous glass for absorbing said noise and each of said impervious layers is a tin-loaded vinyl compound for reflecting and attenuating said noise to effect said 25 db noise attenuation at predetermined frequencies.
Claim 4
Dependent Claim
39 words
A headgear according to claim 2 in which said elongate panel means further includes, a sheath element carried on the external surfaces of said elongate panel means being formed of a tough snag-resistant pliable material for protecting said headgear.
Claim 5
Dependent Claim
53 words
A headgear according to claim 2 in which said elongate panel means has a thickness not greater than one-half inch to ensure comfortable prolonged wearing and is formed with a longitudinally extending flexible tubelet on opposite longitudinal sides and said faster means is a drawstring disposed in each said longitudinally extending flexible tubelet.
Claim 6
Dependent Claim
29 words
A headgear according to claim 2 in which elongate panel means and said fastener means are configured to be optionally worn in a kerchief manner and a turban manner.
Claim 7
Dependent Claim
44 words
A headgear according to claim 2 in which said elongate panel means is shaped in a skull cap configuration, said two sections are dependent ear flap members and said fastener means is a pair of drawstrings each secured to a separate ear flap member.
Claim 8
Dependent Claim
48 words
A headgear according to claim 2 in which said elongate panel means is shaped to reach around the back of the head and cover the ear areas and said fastener means is a pair of biasing strips clamping said elongate panel onto the skull covering the ear areas.
References Cited (Backward Citations)
US548738A
Cited
GB190526402A
Cited
US1845205A
Cited
US2070216A
Cited
US2684067A
Cited
US2743454A
Cited
US3052888A
Cited
US3197787A
Cited
US3571813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |