Roll-off film system
Roll-off film systems and methods are provided in accordance with one or more embodiments that may be installed on goggle frames or adaptors to goggle frames to provide improved field of vision for users. In particular, film canisters of the roll-off film systems may include a blade section configured to seamlessly contact the goggle frame or the adaptor to the goggle frame. Further, the blade section is configured remove mud or dirt from a used section of clear film when the used section is conveyed into the film canister to prevent excess mud or dirt from entering the film canister. The blade section also is configured to slant away from the lens of the goggle to allow the mud or dirt to fall away from the field of view on the lens to provide better field of view for the user.
1. A roll-off film system comprising:
a film dispensing canister configured to store and dispense a film;
a film receiving canister configured to receive the film dispensed from the film dispensing canister, the film receiving canister comprising:
a blade portion configured to cover the film when the film is conveyed into the film receiving canister; and
an upper wing portion and a lower wing portion with the blade portion disposed between the upper and the lower wing portions, wherein an upper triangular surface of the upper wing portion, a sloping surface of the blade portion, and a lower triangular surface of the lower wing portion form a continuous surface configured to collect debris from the film,
wherein the upper triangular surface is provided at a bottom side of the upper wing portion and the lower triangular surface is provided at a top side of the lower wing portion, and
wherein an upper portion of the upper triangular surface is curved to face toward the lower triangular surface and a lower portion of the lower triangular surface is curved to face toward the upper triangular surface, such that the continuous surface has a broad, U-shape.
2. The roll-off film system of claim 1 ,
wherein the film receiving canister is configured to attach to a lens, and
wherein the sloping surface of the blade portion forms an obtuse angle with a surface of the lens to collect debris on the sloping surface when the film is conveyed into the film receiving canister.
3. The roll-off film system of claim 1 , wherein the upper wing portion and the lower wing portion extend further upstream in a film conveying direction of the film than the blade portion.
4. The roll-off film system of claim 3 , wherein the blade portion comprises a lens contacting surface configured to contact a front surface of a lens when the film receiving canister is attached to the lens.
5. The roll-off film system of claim 4 ,
wherein the lens comprises a mud flap extending on an upper portion of the front surface along the film conveying direction from the film dispensing canister to the film receiving canister, and
wherein the upper wing portion is configured to extend over a downstream end of the mud flap with respect to the film conveying direction.
6. The roll-off film system of claim 4 , wherein the film receiving canister further comprises an attachment mechanism disposed on the lens contacting surface and configured to attach the film receiving canister to the lens.
7. The roll-off film system of claim 4 ,
wherein the lens is received in a lens frame,
wherein the upper wing portion of the film receiving canister further comprises a frame contacting surface configured to contact an upper portion the lens frame at a downstream end with respect to the film conveying direction, and
wherein the frame contacting surface has a contour following a contour of the upper-downstream portion of the lens frame.
8. The roll-off film system of claim 1 , wherein an edge of the sloping surface of the blade portion is configured to slide on the film when the film is conveyed into the film receiving canister, and wherein a pull-off pin is provided on the sloping surface.
9. The roll-off film system of claim 8 , wherein an upper portion of the edge protrudes further upstream in a film conveying direction than a lower portion of the edge, such that the edge is slanted away from a field of view of the film at the lower portion of the edge to direct debris collected on the sloping surface away from the field of view.
10. A goggle assembly comprising:
a lens;
a lens frame configured to receive the lens;
a roll-off film system attached to the lens, the roll-off film system comprising:
a film dispensing canister configured to store and dispense a film across a front surface of the lens in a film conveying direction;
a film receiving canister configured to receive the film dispensed across the front surface of the lens from the film dispensing canister, the film receiving canister comprising:
a blade portion configured to cover the film when the film is conveyed into the film receiving canister; and
an upper wing portion and a lower wing portion with the blade portion disposed between the upper and the lower wing portions, wherein an upper triangular surface of the upper wing portion, a sloping surface of the blade portion, and a lower triangular surface of the lower wing portion form a continuous surface configured to collect debris from the film;
wherein the upper triangular surface is provided at a bottom side of the upper wing portion and the lower triangular surface is provided at a top side of the lower wing portion, and
wherein an upper portion of the upper triangular surface is curved to face toward the lower triangular surface and a lower portion of the lower triangular surface is curved to face toward the upper triangular surface, such that the continuous surface has a broad, U-shape.
11. The goggle assembly of claim 10 , wherein a surface of the blade portion forms an obtuse angle with the front surface of the lens.
12. The goggle assembly of claim 10 ,
wherein the upper wing portion and the lower wing portion extend further upstream in a film conveying direction of the film than the blade portion.
13. The goggle assembly of claim 12 ,
wherein the lens comprises a mud flap extending on an upper portion of the front surface along the film conveying direction, and
wherein the upper wing portion is configured to extend over a downstream end of the mud flap with respect to the film conveying direction.
14. The goggle assembly of claim 12 ,
wherein the upper wing portion of the film receiving canister further comprises a frame contacting surface configured to contact an upper portion the lens frame at a downstream end with respect to the film conveying direction, and
wherein the frame contacting surface has a contour following a contour of the upper-downstream portion of the lens frame.
15. The goggle assembly of claim 10 , wherein an edge of the blade portion is configured to slide on the film when the film is conveyed into the film receiving canister.
16. The goggle assembly of claim 13 , wherein an upper portion of the edge protrudes further upstream in a film conveying direction than a lower portion of the edge.
17. The goggle assembly of claim 10 , wherein the lens frame is disposed in a front portion of a goggle frame.
18. The goggle assembly of claim 10 , wherein the lens frame is an adaptor attachable to a goggle frame.
19. A method comprising:
conveying a film from a film dispensing canister across a front surface of a lens to a film receiving canister; and
collecting debris from the film at a continuous surface formed by an upper triangular surface of an upper wing portion, a sloping surface of a lower wing portion, and a lower triangular surface of a blade portion disposed between the upper and the lower wing portions of the film receiving canister before the film is conveyed into the film receiving canister;
wherein the upper triangular surface is provided at a bottom side of the upper wing portion and the lower triangular surface is provided at a top side of the lower wing portion, and
wherein an upper portion of the upper triangular surface is curved to face toward the lower triangular surface and a lower portion of the lower triangular surface is curved to face toward the upper triangular surface, such that the continuous surface has a broad, U-shape.
20. The method of claim 19 further comprising directing the debris collected on the blade portion away from a field of view of the lens by a slanting edge of the blade portion.