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 Title: |
US4014047:
Face mask
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Zobel, James W.; Mount Kisco, NY 10549
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| Assignee: |
None
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| Published / Filed: |
1977-03-29
/ 1975-10-20
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| Application Number: |
US1975000623818
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| IPC Code: |
Advanced:
D05B 33/02;
D05B 41/00;
Core:
D05B 33/00;
more...
IPC-7:
A62B 23/06;
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| ECLA Code: |
D05B33/02; N05B41/00; N05D207/02; N05D207/04; N05D303/10; N05D305/12; N05D305/14;
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| U.S. Class: |
Current:
128/206.19;
Original:
002/206;
128/146.2;
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| Field of Search: |
002/206,9,174
112/413,414,415
128/139,146,146.2,146.6
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| Priority Number: |
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| Abstract: |
A face mask comprising an elongated sheet of porous material having upper and lower longitudinal edges and transverse side edges. A line of stitches of elastic material is sewn to the material along both its side edges, and a length of elastic cord at each side edge is secured to the material by interweaving with the line of stitches thereat. A free intermediate portion of the elastic cord is formed between the ends at which the cord is interwoven with the stitches to the porous material, and the free intermediate portion forms an ear loop. The elastic material is sewn to the porous material and interwoven with the cord lengths while the porous material is taut so that when the porous material is relaxed, the elastic material exerts a pull on the porous material to gather and contract the material at the side edges. In the manufacture of the masks, the porous material is continuously withdrawn from a roll thereof by drive rollers and advanced through a sewing machine where the line of stitches is continuously sewn along each of the opposite side edges of the material while the material is taut. The cord is periodically interwoven along each side edge with the line of stitches, and a cutter downstream of the sewing machine cuts the porous material transversely thereof at successive spaced locations at which the cord is interwoven with the line of stitches.
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| Attorney, Agent or Firm: |
Roberts & Cohen ;
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| Primary / Asst. Examiners: |
Schroeder, Werner H.; Nerbun, Peter
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| INPADOC Legal Status: |
None
Family Legal Status Report
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| Parent Case: |
This application is a division of Ser. No. 537,262 filed Dec. 20, 1974 issued as U.S. Pat. No. 3,960,096 on June 1, 1976.
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| Family: |
Show 2 known family members
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First Claim:
Show all 5 claims |
What is claimed is:
1. A face mask comprising an elongated sheet of porous material having upper and lower longitudinal edges and transverse side edges, a line of stitches of elastic material sewn to said material along both side edges at an inwardly spaced location from said edges, and a length of cord at each side edge secured to said material by the line of stitches thereat without said cord penetrating the porous material and without said stitches penetrating said cord, each length of said cord having opposite spaced ends which are interwoven with said line of stitches to be anchored to said porous material along said side edges, said cord having a free intermediate portion between said ends which forms an ear loop, said elastic material being sewn to said porous material and interwoven with said cord lengths when the porous material is taut such that when the porous material is relaxed, the elastic material exerts a pull on the porous material to gather and contract the material at the side edges.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
Show drawing descriptions
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| Description: |
Show description
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| Forward References: |
Show 14 U.S. patent(s) that reference this one
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