US4215436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Headwear mounted transparent film distributing means
Assignee: Individual
•
Filing: 1979-06-14
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Granted: 1980-08-05
•
Expires: 1999-06-14
Abstract
Abstract The face and head protective hood assembly has a window plate for vision, a movable flexible transparent film over the window plate, payout means for the film, and take-up means for removing soiled film. The payout means consists essentially of an elongated housing with a narrow slot in it faced toward the hood assembly. A free-standing non-rotatable shaft is fixed centrally in the housing. A hollow payout roll of flexible transparent film is mounted for rotation about the non-rotatable shaft. Resilient means on the exterior of the non-rotatable shaft presses against the hollow interior of the payout roll to frictionally resist rotational movement of it. The take-up means consists essentially of a take-up shaft free of an external housing, a hand operated knurled wheel fixed on it, bracket means on the exterior of the hood assembly for removably mounting the ends of the take-up shaft for rotational movement by turning the knurled wheel, and a leaf spring in biased relationship against the knurled wheel to limit rotational movement of the take-up shaft to one direction only.
Inventors
- 👤 Jack L. Ketterer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:14
CPC Classifications
A; A62; A62B; A62B17/00; A62B17/04; A42; A42B; A42B3/00; A42B3/04; A42B3/18; A42B3/22; A42B3/26
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
211 words
In a face and head protective hood assembly having a window plate for vision, a movable flexible transparent film as a replaceable protector over the outer surface of said window plate, payout means for said film, and take-up means for removing soiled film contaminated with vision obstruction material from the area of said window plate, said payout means and said take-up means being mounted on opposite sides of said window plate, the improvements wherein, (i) said payout means consists essentially of an elongated housing attached on the exterior of said hood assembly along one edge of said window plate, a straight longitudinally extending narrow slot in said housing, said slot being faced toward and spaced from but proximate to the outer surface of said hood assembly, a free-standing non-rotatable shaft fixed to one end of said housing and substantially centrally oriented within said housing, a replaceable hollow payout roll of said flexible transparent film mounted for rotation about said non-rotatable shaft within said housing, said film being drawn out of said slot over said window plate, and resilient means fixed along the exterior of said non-rotatable shaft for pressing against the hollow interior of said payout roll to frictionally resist rotational movement of said payout roll about said non-rotatable shaft, and
Claim 2
Dependent Claim
211 words
In a face and head protective hood assembly having a window plate for vision, a movable flexible transparent film as a replaceable protector over the outer surface of said window plate, payout means for said film, and take-up means for removing soiled film contaminated with vision obstruction material from the area of said window plate, said payout means and said take-up means being mounted on opposite sides of said window plate, the improvements wherein, (i) said payout means consists essentially of an elongated housing attached on the exterior of said hood assembly along one edge of said window plate, a straight longitudinally extending narrow slot in said housing, said slot being faced toward and spaced from but proximate to the outer surface of said hood assembly, a free-standing non-rotatable shaft fixed to one end of said housing and substantially centrally oriented within said housing, a replaceable hollow payout roll of said flexible transparent film mounted for rotation about said non-rotatable shaft within said housing, said film being drawn out of said slot over said window plate, and resilient means fixed along the exterior of said non-rotatable shaft for pressing against the hollow interior of said payout roll to frictionally resist rotational movement of said payout roll about said non-rotatable shaft, and
Claim 3
Dependent Claim
169 words
(ii) said take-up means consists essentially of a take-up shaft free of an external housing, a hand operated knurled wheel fixed on said take-up shaft proximate to one end thereof, bracket means on the interior of said hood assembly for removably mounting the ends of said take-up shaft to permit rotational movement thereof by turning said knurled wheel, said knurled wheel being at a location between said mounted ends of said take-up shaft, and a leaf spring fixed on said hood assembly in biased relationship against said knurled wheel to prevent backwind of said wheel and said take-up shaft but allow rotational movement thereof in one direction only, whereby said take-up means functions in cooperation with said resilient means of said payout means as the sole structural elements for maintaining said transparent film in taut condition over the outer surface of said window plate, said take-up means being operable without binding even when vision obstruction material on said transparent film is several times the thickness of said transparent film.
Claim 4
Dependent Claim
169 words
(ii) said take-up means consists essentially of a take-up shaft free of an external housing, a hand operated knurled wheel fixed on said take-up shaft proximate to one end thereof, bracket means on the interior of said hood assembly for removably mounting the ends of said take-up shaft to permit rotational movement thereof by turning said knurled wheel, said knurled wheel being at a location between said mounted ends of said take-up shaft, and a leaf spring fixed on said hood assembly in biased relationship against said knurled wheel to prevent backwind of said wheel and said take-up shaft but allow rotational movement thereof in one direction only, whereby said take-up means functions in cooperation with said resilient means of said payout means as the sole structural elements for maintaining said transparent film in taut condition over the outer surface of said window plate, said take-up means being operable without binding even when vision obstruction material on said transparent film is several times the thickness of said transparent film.
Claim 5
Dependent Claim
22 words
The hood assembly of claim 1 wherein said elongated housing is substantially cylindrical at said non-rotatable shaft is substantially axially oriented therewithin.
Claim 6
Dependent Claim
34 words
The hood assembly of claim 1 wherein said slot of said payout means and said take-up shaft are substantially parallel and lie in a plane behind at least a portion of said window plate.
Claim 7
Dependent Claim
22 words
The hood assembly of claim 1 wherein said resilient means on said shaft of said payout means comprises an assembly of wires.
Claim 8
Dependent Claim
18 words
The hood assembly of claim 1 wherein said take-up shaft comprises a surface structure of friction grip material.
Claim 9
Dependent Claim
19 words
The hood assembly of claim 1 wherein said take-up shaft comprises a surface structure of rubbery friction grip material.
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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) | 1983-08-05 | 1984-02-04 | 1984-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-05 | 1988-02-04 | 1988-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-05 | 1992-02-04 | 1992-08-05 | $7700.00 | Window Closed / Lapsed |