Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Woven fabric – Woven fabric is characterized by a particular or...
Reexamination Certificate
1999-12-03
2003-04-15
Morris, Terrel (Department: 1771)
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Woven fabric
Woven fabric is characterized by a particular or...
C442S189000, C428S902000, C428S911000, C139S38300A, C002S002500
Reexamination Certificate
active
06548430
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a protective fabric having a high resistance to penetration by instruments such as ice picks and the like and to vestments made from such fabric.
2. Description of Related Art
Protective clothing is used in a multiplicity of applications to protect the wearer against harm from a variety of objects such as knives, picks, bullets, and the like.
Protective clothing of the type worn by prison guards, among others, must be capable of withstanding assault by a variety of instruments. Typically, they are judged by their resistance to ballistic penetration (e.g., by .357 magnum and 9 mm ammunition); dagger cutting; penetration by single and double-edged knives; and puncture by both blunt (e.g., 3:1 ratio of tip diameter to shaft diameter) and sharp (e.g., 12:1 ratio of tip diameter to shaft diameter) instruments such as ice picks and the like. Of these measures of performance, one of the most difficult to achieve is resistance to puncture, particularly by sharp instruments.
Varied approaches have heretofore been utilized to provide the requisite protection. For example, U.S. Pat. No. 5,185,195 teaches the use of a number of layers of fabric secured together by closely spaced rows of stitching. Overlapping ceramic disks are also optionally incorporated into the vestment.
U.S. Pat. No. 4,737,401 teaches formation of a ballistic resistant fabric from high molecular weight fibers of polyolefin, polyvinyl alcohol, and polyacrylonitrile materials. The fibers may additionally coated. U.S. Pat. No. 4,574,105 teaches the use of both polyester (p-phenylene terepthalamide) yarns and polyamide yarns. U.S. Pat. No. 5,225,241 teaches the enhancement to ballistic penetration by forming a vestment from coated fibers.
SUMMARY OF THE INVENTION
Because of the extreme demands made on the materials, they are frequently expensive to produce, both in fabric and in finished form. In addition, processes used to form the fabric and the finished article frequently result in a fabric and an article which is relatively stiff and not readily drapable. Accordingly, the user frequently finds such vestments unduly restrictive and uncomfortable, and often dispenses their use in situations where good safety practices would otherwise call for them.
Accordingly, it is an object of the invention to provide a fabric having improved penetration resistance.
Further, it is an object of the invention to provide a fabric having comparatively high resistance to penetration by both blunt and sharp instruments.
Still a further object of the invention is to provide a fabric having enhanced resistance to penetration by both blunt and sharp instruments.
Still a further object of the invention is to provide a fabric having enhanced resistance to penetration by both blunt and sharp instruments that is also characterized by an acceptable drapability.
Another object of the invention is to provide a fabric that has enhanced resistance to penetration by blunt and sharp instruments and that is characterized by a comparatively low cost per unit of protection provided.
Yet another object of the invention is to provide a vestment having enhanced resistance to penetration by blunt or :harp probes, as well as enhanced resistance to penetration by knives and ballistic penetration.
The present invention is directed to a protective fabric including a plurality of warp yarns interwoven with a plurality of fill yarns. A denier of each of the warp and fill yarns is less than 500. The yarns are made from at least one of liquid crystal polyesters, para-aramids, and high density polyethylenes.
REFERENCES:
patent: 1049313 (1912-12-01), Murphy et al.
patent: 1156155 (1915-10-01), Landis
patent: 1181065 (1916-04-01), Coffield
patent: 1217754 (1917-02-01), Grube
patent: 1226703 (1917-05-01), Schmidt
patent: 1273446 (1918-07-01), Belton
patent: 1297408 (1919-03-01), Schuster
patent: 1300980 (1919-04-01), LeDoux
patent: 1305622 (1919-06-01), Rawdon et al.
patent: 1346632 (1920-07-01), Bennett
patent: 1371097 (1921-03-01), Jones
patent: 1401306 (1921-12-01), Bird
patent: 1474387 (1923-11-01), Schoneberger
patent: 3563294 (1971-02-01), Chien
patent: 3831653 (1974-08-01), Moore
patent: 3935892 (1976-02-01), Arimura et al.
patent: 3982577 (1976-09-01), Scimeca
patent: 4008743 (1977-02-01), Welch
patent: 4043609 (1977-08-01), Vidakovic et al.
patent: 4132258 (1979-01-01), Vidakovic et al.
patent: 4158378 (1979-06-01), Pearson et al.
patent: 4197893 (1980-04-01), O'Coin
patent: 4231407 (1980-11-01), James
patent: 4249587 (1981-02-01), Duttlinger
patent: 4254810 (1981-03-01), Shichman
patent: 4275782 (1981-06-01), McFarlane
patent: 4356214 (1982-10-01), Soeda et al.
patent: 4388261 (1983-06-01), Codispoti et al.
patent: 4403012 (1983-09-01), Harpell et al.
patent: 4574105 (1986-03-01), Donovan
patent: 4664168 (1987-05-01), Hong et al.
patent: 4737401 (1988-04-01), Harpell et al.
patent: 4743497 (1988-05-01), Thorsrud
patent: 4816101 (1989-03-01), Hong et al.
patent: 4852625 (1989-08-01), Mashimo et al.
patent: 4868040 (1989-09-01), Hallal et al.
patent: 5085942 (1992-02-01), Hong et al.
patent: 5185195 (1993-02-01), Harpell et al.
patent: 5198280 (1993-03-01), Harpell et al.
patent: 5201971 (1993-04-01), Gifford
patent: 5225241 (1993-07-01), Dischler
patent: H1225 (1993-09-01), Foy et al.
patent: 5343796 (1994-09-01), Cordova et al.
patent: 5565244 (1996-10-01), Howland
patent: 5578358 (1996-11-01), Foy et al.
patent: 5579628 (1996-12-01), Dunbar
patent: 5622771 (1997-04-01), Chiou et al.
patent: 5837623 (1998-11-01), Howland
patent: 5976996 (1999-11-01), Howland
patent: 6063716 (2000-05-01), Granqvist
patent: 6133169 (2000-10-01), Chiou et al.
patent: 6266818 (2001-07-01), Howland et al.
patent: WO 01/29299 (2001-04-01), None
Guarriello John J.
Maine & Asmus
Morris Terrel
Warwick Mills, Inc.
LandOfFree
Protective fabric having high penetration resistance does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Protective fabric having high penetration resistance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protective fabric having high penetration resistance will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3059175