Flexible bags – Wall details – Stretchable
Reexamination Certificate
1999-06-18
2002-05-28
Young, Lee (Department: 3727)
Flexible bags
Wall details
Stretchable
C383S903000, C383S006000, C383S037000, C383S042000, C206S390000
Reexamination Certificate
active
06394652
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to flexible bags of the type commonly utilized for the containment and/or disposal of various items and/or materials.
BACKGROUND OF THE INVENTION
Flexible bags, particularly those made of comparatively inexpensive polymeric materials, have been widely employed for the containment and/or disposal of various items and/or materials.
As utilized herein, the term “flexible” is utilized to refer to materials which are capable of being flexed or bent, especially repeatedly, such that they are pliant and yieldable in response to externally applied forces. Accordingly, “flexible” is substantially opposite in meaning to the terms inflexible, rigid, or unyielding. Materials and structures which are flexible, therefore, may be altered in shape and structure to accommodate external forces and to conform to the shape of objects brought into contact with them without losing their integrity. Flexible bags of the type commonly available are typically formed from materials having consistent physical properties throughout the bag structure, such as stretch, tensile, and/or elongation properties.
With such flexible bags, it is frequently difficult to provide bags which precisely accommodate the dimensions and volume of the contents to be placed therein. Excess interior space may lead to degradation of the contents due to trapped air space, not to mention wasted bag material due to unused volume. In addition, for such uses as colostomy bags, it is desirable to maximize discretion by minimizing the size of the bag to the volume and dimensions necessary to accommodate the contents. The packaging of bags prior to use is also constrained by the dimensions of the bag as-provided.
Accordingly, it would be desirable to provide a flexible bag which is capable of closely conforming to the volume and/or dimensions of the bag contents in use.
SUMMARY OF THE INVENTION
The present invention provides a flexible bag comprising at least one sheet of flexible sheet material assembled to form a semi-enclosed container having an opening defined by a periphery. The opening defines an opening plane, and bag is expandable in response to forces exerted by contents within the bag to provide an increase in volume of the bag such that said the accommodates the contents placed therein.
REFERENCES:
patent: 584555 (1897-06-01), Lorenz
patent: 605343 (1898-06-01), Ross
patent: 1853374 (1932-04-01), Oxhandler
patent: 1962071 (1934-06-01), Greene
patent: 2653751 (1953-09-01), Vogt
patent: 3186626 (1965-06-01), Shvetz
patent: 3217971 (1965-11-01), Shvetz
patent: 3224574 (1965-12-01), McConnell et al.
patent: 3254828 (1966-06-01), Lerner
patent: 3367380 (1968-02-01), Dickey
patent: 3411698 (1968-11-01), Reynolds
patent: 3462067 (1969-08-01), Shore
patent: 3549381 (1970-12-01), Kinsinger
patent: 3575781 (1971-04-01), Pezely
patent: 3682372 (1972-08-01), Rodley
patent: 3738565 (1973-06-01), Ackley et al.
patent: 3904465 (1975-09-01), Haase et al.
patent: 3970241 (1976-07-01), Hanson
patent: 3973063 (1976-08-01), Clayton
patent: 4555605 (1985-11-01), Brown et al.
patent: 4567984 (1986-02-01), Gietman, Jr.
patent: 4571337 (1986-02-01), Cage et al.
patent: 4583642 (1986-04-01), Blythe et al.
patent: 4597494 (1986-07-01), Benoit
patent: 4612431 (1986-09-01), Brown et al.
patent: 4661671 (1987-04-01), Maroszek
patent: 4736450 (1988-04-01), Van Erden et al.
patent: 4739884 (1988-04-01), Duplessy
patent: 4742203 (1988-05-01), Brown et al.
patent: 4781301 (1988-11-01), Le Bret et al.
patent: 4808421 (1989-02-01), Mendenhall et al.
patent: 4848930 (1989-07-01), Williams et al.
patent: 4849090 (1989-07-01), Case et al.
patent: 4850508 (1989-07-01), Lee
patent: 4890736 (1990-01-01), Greyvenstein
patent: 4898477 (1990-02-01), Cox et al.
patent: 4904092 (1990-02-01), Campbell et al.
patent: 4930644 (1990-06-01), Robbins, III
patent: 4938608 (1990-07-01), Espinosa
patent: 5044774 (1991-09-01), Bullard et al.
patent: 5061500 (1991-10-01), Mendenhall
patent: 5140119 (1992-08-01), Brown et al.
patent: 5167377 (1992-12-01), Chalmers
patent: 5186988 (1993-02-01), Dixon
patent: 5195829 (1993-03-01), Watkins et al.
patent: 5205650 (1993-04-01), Rasmussen
patent: 5246110 (1993-09-01), Greyvenstein
patent: 5290104 (1994-03-01), Sengewald
patent: 5314252 (1994-05-01), Happ
patent: 5364189 (1994-11-01), Kuge et al.
patent: 5507579 (1996-04-01), Sorenson
patent: 5518801 (1996-05-01), Chappell et al.
patent: 5524990 (1996-06-01), Buck
patent: 5547284 (1996-08-01), Imer
patent: 5554093 (1996-09-01), Porchia et al.
patent: 5575747 (1996-11-01), Dais et al.
patent: 5605594 (1997-02-01), May
patent: 5618111 (1997-04-01), Porchia et al.
patent: 5650214 (1997-07-01), Anderson et al.
patent: 5699932 (1997-12-01), Claydon et al.
patent: 5730312 (1998-03-01), Hung
patent: 5743458 (1998-04-01), French
patent: 5743460 (1998-04-01), Capy et al.
patent: 5921390 (1999-07-01), Simhaee
patent: 5950818 (1999-09-01), Paulsen
patent: 6113269 (2000-09-01), DeMatteis et al.
patent: 6150647 (2000-11-01), Anderson et al.
patent: 703818 (1941-03-01), None
patent: 2444742 (1976-04-01), None
patent: 2437968 (1979-12-01), None
patent: 0 338 747 (1989-10-01), None
patent: 991671 (1951-10-01), None
patent: 2056951 (1971-05-01), None
patent: 2576834 (1986-08-01), None
patent: 1302940 (1973-01-01), None
patent: 2175564 (1986-12-01), None
patent: 4065223 (1999-05-01), None
patent: 6918650 (1971-06-01), None
patent: WO 92/20593 (1992-11-01), None
patent: WO 95/00405 (1995-01-01), None
patent: WO 96/06733 (1996-03-01), None
patent: WO 97/29966 (1997-08-01), None
Anderson Barry Jay
Berg, Jr. Charles John
Cerone Daniel Raymond
Cooper John Thomas
Jackson Beverly Julian
Andes William S.
Hylton Robin A.
Mattheis David K.
Murphy Stephen T.
Young Lee
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