US3721995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent protective screen
Assignee: ARISARA INVEST
•
Filing: 1971-04-12
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Granted: 1973-03-27
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Expires: 1991-04-12
Abstract
Abstract The invention deals with a transparent protective shield which comprises an element of a transparent material partly housed in a support. The free portion of said element is intended to be located in front of a sighting field. An actuating device drives the transparent element in displacement relative to the support so that it passes over scraping lips which clean said element.
Inventors
- 👤 P Peillex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:07
CPC Classifications
G; G02; G02C; G02C13/00; G02C13/006; A; A61; A61F; A61F9/00; A61F9/02; A61F9/029; G02C11/00; G02C11/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
88 words
A helmet having a transparent protective shield in the form of a continuous closed loop of transparent strip material disposed within the helmet and passing about the head of the wearer and in front of the eyes of the wearer, power means for continuously circulating the loop about the interior of the helmet so that different portions of the loop pass in one direction before the eyes of the wearer, and means carried by the helmet to clean the transparent loop during its movement relative to the helmet.
Claim 2
Dependent Claim
88 words
A helmet having a transparent protective shield in the form of a continuous closed loop of transparent strip material disposed within the helmet and passing about the head of the wearer and in front of the eyes of the wearer, power means for continuously circulating the loop about the interior of the helmet so that different portions of the loop pass in one direction before the eyes of the wearer, and means carried by the helmet to clean the transparent loop during its movement relative to the helmet.
Claim 3
Dependent Claim
18 words
A helmet as claimed in claim 1, said cleaning means comprising lips clamping the transparent loop between them.
Claim 4
Dependent Claim
20 words
A helmet as claimed in claim 1, said power means comprising rotary means engaging in spaced perforations in said loop.
Claim 5
Dependent Claim
25 words
A helmet as claimed in claim 1, said power means comprising reciprocatory means engaging with the loop to drive the loop in said one direction.
Claim 6
Dependent Claim
29 words
A helmet as claimed in claim 1, said power means comprising an electric motor carried by the helmet, and batteries carried by the helmet for driving said electric motor.
Claim 7
Dependent Claim
12 words
A helmet as claimed in claim 1, said transparent loop being flexible.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |