GB1603547A - Blanket for the production of extensible paper - Google Patents

Blanket for the production of extensible paper Download PDF

Info

Publication number
GB1603547A
GB1603547A GB20393/78A GB2039378A GB1603547A GB 1603547 A GB1603547 A GB 1603547A GB 20393/78 A GB20393/78 A GB 20393/78A GB 2039378 A GB2039378 A GB 2039378A GB 1603547 A GB1603547 A GB 1603547A
Authority
GB
United Kingdom
Prior art keywords
blanket
cords
plies
ply
laterally
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB20393/78A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beloit Corp
Original Assignee
Beloit Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beloit Corp filed Critical Beloit Corp
Priority to GB20393/78A priority Critical patent/GB1603547A/en
Priority to JP7405478A priority patent/JPS54151609A/en
Priority to DE2832054A priority patent/DE2832054C2/en
Publication of GB1603547A publication Critical patent/GB1603547A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D21F3/0227—Belts or sleeves therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C21/00—Shrinking by compressing
    • D06C21/005—Compacting belts
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/005—Mechanical treatment
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/24—Special paper or cardboard not otherwise provided for having enhanced flexibility or extensibility produced by mechanical treatment of the unfinished paper
    • D21H5/245—Special paper or cardboard not otherwise provided for having enhanced flexibility or extensibility produced by mechanical treatment of the unfinished paper obtained by compressing the (moist) paper in directions lying in, and optionally perpendicular to, the paper plane, e.g. plain-surfaced Clupak papers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/08—Reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2433/00—Closed loop articles

Description

(54) IMPROVED BLANKET FOR THE PRODUCTION OF EXTENSIBLE PAPER (71) We, BELOIT CORPORATION, a corporation organised and existing under the laws of the State of Wisconsin, United States of America, of Beloit, Wisconsin 53511, United States of America, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- The present invention relates to a flexible endless belt, known as a "blanket", for use in the manufacture of extensible webs of paper or textile material.
In one known method of making such extensible webs, a flexible endless blanket is trained about a plurality of pulleys or rolls.
The blanket is trained about one pulley and then passes through a nip formed with a second pulley. Upon exiting from the nip, the belt is reversely flexed about the second pulley. The web to be longitudinally compressed is applied to the outer surface of the flexible blanket as it passes over the first pulley. The decrease in length of the outer surface of the blanket as it passes through the compression nip and changes direction of curvature causes the web to be foreshortened. This high flexure and particularly the compression of the blanket in the nip can eventually cause the blanket to fail.
It is an object, therefore, of this invention to provide a flexible endless blanket for use in such machines which will have good resistance to failure or separation of the components.
According to the invention there is provided a flexible endless blanket of elastomeric material, for use in apparatus for longitudinally compressing a web, and comprising first and third plies of material extending circumferentially through said blanket and having reinforcing cords embedded therein, the cords extending transversely across said blanket, and a second ply of material sandwiched between said first and third plies and having reinforcing cords embedded therein, the cords in said second ply extending circumferentially with respect to said blanket and being completely encased between said first and third plies with the laterally outermost cords in said second ply being disposed laterally inwardly with respect to the end of the cords in said first and third plies, and all three plies being disposed within the lower 25% of the blanket.
The following is a more detailed description of one embodiment of the invention, reference being made to the accompanying drawings in which: Figure 1 is a schematic elevational view of portions of an apparatus for longitudinally compressing webs; Figure 2 is a fragmentary sectional view taken substantially along line 2-2 of Figure 1 and illustrating a prior art blanket; Figure 3 is a fragmentary sectional view of the prior art blanket of Figure 3 taken substantially along line 3-3 of Figure 2; Figure 4 is a view similar to that in Figure 2, but showing the prior art blanket in its compressed configuration; and Figures 5, 6 and 7 are similar respectively to Figures 2, 3 and 4, but illustrating a blanket in accordance with the present invention.
Figure 1 shows an apparatus 10 for longitudinally compressing a web of material The apparatus 10 includes a flexible endless belt 12 which is trained about first, second, third and fourth pulleys 14, 16, 18 and 20, respectively. The belt 12 is known to those in the limited field of making extensible webs as a "blanket" and will, therefore, be referred to as the blanket 12 hereinafter.
The third pulley 18 is disposed adjacent the pulley 14 to provide a compression nip 22 through which the blanket 12 passes. The first, third and fourth pulleys are arranged such that the blanket 12 passes about these pulleys in serpentine fashion. The fourth pulley 20 is spaced from the third pulley 18 so that there is no compression nip therebetween. It will be appreciated that the fourth pulley 20 could be eliminated and the second pulley 16 made larger in diameter, thus providing a serpentine path for the blanket 12, but utilising only three pulleys.
A web of material 24, such as paper or textile, is applied to the outer surface 28 of the blanket 12 as it enters the nip 22. The web of material 24 passes about the third pulley 18 and exits at 26. The blanket 12 is provided with an inextensible reinforcing structure 13 and is tightly trained about the pulleys 14, 16, 18 and 20. The outer surface 28 of the blanket 12 will, therefore, be stretched in the machine direction or circumferentially as its wraps about the first pulley 14. The stretching of the outer surface 28 will be increased by the nipping or Venturi effect of the constriction ofthe thickness ofthe belt.
In.the same manner, the outer surface 28 of the belt 12 will be compressed as it reverses curvature passing about the third pulley 18.
Thus, a web applied to the outer surface 28 of the blanket 12 in the stretched condition as it enters nip 22 will be foreshortened as it passes through the nip 22 between the rolls 14 and 18 and changes directions of curvature as described above.
With reference to Figures 2, 3 and 4, there is illustrated a common prior art structure for such a blanket 12. The reinforcing structure 13 includes two plies 30 and 32 of cord or cord reinforced fabric. The structure 13 is disposed closely adjacent the bottom side 34 of the blanket 12. For purposes of this invention, the bottom or lower side 34 of the blanket 12 will be that side of the blanket 12 which is closest to the first pulley 14, i.e. the pulley about which the blanket 12 is trained when the fabric or web 24 is first applied to the belt.
As is customary in prior art blanket structures, the first ply 30 has its reinforcing cords extending transversely or from side to side with respect to the blanket 12. The second ply 32 has its cords extending circumferentially or in the machine direction. These cords can be applied by helically winding a single cord or helically winding a band of several cords. In any event, it will be appreciated that prior art structures provide for the plies 30 and 32 to be of uniform width and to terminate substantially short of the lateral edges 36 of the blanket and completely encase the cords in rubber.
As best seen, however, in Figure 4, as the blanket 12 passes through the nip 22, it is compressed up to 25% or more of its normal thickness. In doing so, a pair of bulges 38 and 40 are developed along the lateral edges. It has been discovered that this bulging is a major cause of the failure of the lateral edges of the reinforcing structure 13. The laterally outer cord 42 in the ply 32 is drawn laterally sideways as the belt passes through the nip 22, and after several such strains and flexures, the cord 42 will break. Successively the cords 43 and 44 and so on will break, ultimately rendering the blanket 12 useless.
In addition a circumferential crack or rupture 45 can develop adjacent the lateral edge of the first ply 30 which extends to the lower surface 34.
In accordance with the present invention, and as illustrated in Figures 5, 6 and 7, three plies of fabric are arranged in the reinforcing structure 13 in a specific manner to reduce or eliminate this edge failure. The first ply of cord fabric 50 is disposed closely adjacent the bottom side 34 of the blanket 12 and has its cords extending transversely with respect to the blanket. The second ply of cord fabric 52 has its cords extending circumferentially about the blanket 12 while the third ply 54 has its cords extending transversely with respect to the blanket 12. The laterally outer edge 56 of the second ply 52 is disposed laterally inwardly of the laterally outer edges 58 and 60 of the first and third plies 50 and 54. More specifically, the laterally outer edges 58 and 60 of the first and third plies 50 and 54 extent all the way to the laterally outer edge 36 of the blanket 12, while the laterally outer edge 56 of the central ply 52 is located a distance D of between 1/8 inch and 1 1/2 inches inwardly from the edge 36 of the blanket 12 and the edges 58 and 60 of the plies 50 and 54. An optimum distance D is about 1/2 inch.
As best seen in Figure 7, the sandwiching of the circumferentially extending cords between two layers of transversely extending cords. Specifically, as shown in Figure 7, the major bulge 62 in the belt as it passes through the nip 22 will be confined to the thick area above the reinforcing structure 13.
It is preferable that the reinforcing plies 50, 52 and 54 be confined to an area as close to the bottom side 34 of the blanket 12 as possible. This will provide a greater volume of compressible rubber above the reinforcing material which can be deformed as the blanket 12 passes through the nip 22. It is preferred that the plies be kept within the of compressible rubber above the reinforcing material which can be deformed as the blanket 12 passes throughthe nip 22. It is preferred that the plies be kept within the lower 25% of the blanket 12. The transversely extending cords in the ply 54 tend to restrict and distribute the outwardly stretching forces of the rubber and protect the circumferentially extending cords from being unduly strained and broken.
WHAT WE CLAIM IS: 1. A flexible endless blanket of elastomeric material, for use in apparatus for longitudinally compressing a web, and comprising first and third plies of material extending circumferentially through said blanket and having reinforcing cords embedded therein, the cords extending transversely across said blanket, and a second ply of material sandwiched between said first and third plies and having reinforcing cords embedded therein, the cords in said second ply extending
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. the blanket 12 as it enters the nip 22. The web of material 24 passes about the third pulley 18 and exits at 26. The blanket 12 is provided with an inextensible reinforcing structure 13 and is tightly trained about the pulleys 14, 16, 18 and 20. The outer surface 28 of the blanket 12 will, therefore, be stretched in the machine direction or circumferentially as its wraps about the first pulley 14. The stretching of the outer surface 28 will be increased by the nipping or Venturi effect of the constriction ofthe thickness ofthe belt. In.the same manner, the outer surface 28 of the belt 12 will be compressed as it reverses curvature passing about the third pulley 18. Thus, a web applied to the outer surface 28 of the blanket 12 in the stretched condition as it enters nip 22 will be foreshortened as it passes through the nip 22 between the rolls 14 and 18 and changes directions of curvature as described above. With reference to Figures 2, 3 and 4, there is illustrated a common prior art structure for such a blanket 12. The reinforcing structure 13 includes two plies 30 and 32 of cord or cord reinforced fabric. The structure 13 is disposed closely adjacent the bottom side 34 of the blanket 12. For purposes of this invention, the bottom or lower side 34 of the blanket 12 will be that side of the blanket 12 which is closest to the first pulley 14, i.e. the pulley about which the blanket 12 is trained when the fabric or web 24 is first applied to the belt. As is customary in prior art blanket structures, the first ply 30 has its reinforcing cords extending transversely or from side to side with respect to the blanket 12. The second ply 32 has its cords extending circumferentially or in the machine direction. These cords can be applied by helically winding a single cord or helically winding a band of several cords. In any event, it will be appreciated that prior art structures provide for the plies 30 and 32 to be of uniform width and to terminate substantially short of the lateral edges 36 of the blanket and completely encase the cords in rubber. As best seen, however, in Figure 4, as the blanket 12 passes through the nip 22, it is compressed up to 25% or more of its normal thickness. In doing so, a pair of bulges 38 and 40 are developed along the lateral edges. It has been discovered that this bulging is a major cause of the failure of the lateral edges of the reinforcing structure 13. The laterally outer cord 42 in the ply 32 is drawn laterally sideways as the belt passes through the nip 22, and after several such strains and flexures, the cord 42 will break. Successively the cords 43 and 44 and so on will break, ultimately rendering the blanket 12 useless. In addition a circumferential crack or rupture 45 can develop adjacent the lateral edge of the first ply 30 which extends to the lower surface 34. In accordance with the present invention, and as illustrated in Figures 5, 6 and 7, three plies of fabric are arranged in the reinforcing structure 13 in a specific manner to reduce or eliminate this edge failure. The first ply of cord fabric 50 is disposed closely adjacent the bottom side 34 of the blanket 12 and has its cords extending transversely with respect to the blanket. The second ply of cord fabric 52 has its cords extending circumferentially about the blanket 12 while the third ply 54 has its cords extending transversely with respect to the blanket 12. The laterally outer edge 56 of the second ply 52 is disposed laterally inwardly of the laterally outer edges 58 and 60 of the first and third plies 50 and 54. More specifically, the laterally outer edges 58 and 60 of the first and third plies 50 and 54 extent all the way to the laterally outer edge 36 of the blanket 12, while the laterally outer edge 56 of the central ply 52 is located a distance D of between 1/8 inch and 1 1/2 inches inwardly from the edge 36 of the blanket 12 and the edges 58 and 60 of the plies 50 and 54. An optimum distance D is about 1/2 inch. As best seen in Figure 7, the sandwiching of the circumferentially extending cords between two layers of transversely extending cords. Specifically, as shown in Figure 7, the major bulge 62 in the belt as it passes through the nip 22 will be confined to the thick area above the reinforcing structure 13. It is preferable that the reinforcing plies 50, 52 and 54 be confined to an area as close to the bottom side 34 of the blanket 12 as possible. This will provide a greater volume of compressible rubber above the reinforcing material which can be deformed as the blanket 12 passes through the nip 22. It is preferred that the plies be kept within the of compressible rubber above the reinforcing material which can be deformed as the blanket 12 passes throughthe nip 22. It is preferred that the plies be kept within the lower 25% of the blanket 12. The transversely extending cords in the ply 54 tend to restrict and distribute the outwardly stretching forces of the rubber and protect the circumferentially extending cords from being unduly strained and broken. WHAT WE CLAIM IS:
1. A flexible endless blanket of elastomeric material, for use in apparatus for longitudinally compressing a web, and comprising first and third plies of material extending circumferentially through said blanket and having reinforcing cords embedded therein, the cords extending transversely across said blanket, and a second ply of material sandwiched between said first and third plies and having reinforcing cords embedded therein, the cords in said second ply extending
circumferentially with respect to said blanket and being completely encased between said first and third plies with the laterally outermost cords in said second ply being disposed laterally inwardly with respect to the ends of the cords in said first and third plies, and all three plies being disposed within the lower 25% of the blanket.
2. A blanket according to claim 1, wherein the cords in said first and third plies extend to the laterally outer edges of said blanket.
3. A blanket according to claim 1 or claim 2, wherein the laterally outer edge of said second ply is disposed between 1/8 and I 1/2 inches laterally inwardly with respect to the laterally outer edges of said first and third plies.
4. A blanket according to claim 1 to claim 2, wherein the laterally outer edges of said first and third plies are disposed about 1/2 inch laterally outwardly of the laterally outer edge of said second ply.
5. A flexible endless blanket according to claim 1 and substantially as hereinbefore described with reference to Figures 5, 6 and 7 of the accompanying drawings.
6. Apparatus for longitudinally compressing a web comprising first, second and third rolls rotatable about their respective axes and a flexible endless blanket of elastomeric material according to any one of the preceding claims, said blanket being trained about said first and second rolls and passing through a nip between said second and third rolls which compresses said blanket.
GB20393/78A 1978-05-18 1978-05-18 Blanket for the production of extensible paper Expired GB1603547A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB20393/78A GB1603547A (en) 1978-05-18 1978-05-18 Blanket for the production of extensible paper
JP7405478A JPS54151609A (en) 1978-05-18 1978-06-19 Flexible endless blanket
DE2832054A DE2832054C2 (en) 1978-05-18 1978-07-21 Endless pressure belt made of elastomeric material for use in a device for longitudinally compressing a web

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20393/78A GB1603547A (en) 1978-05-18 1978-05-18 Blanket for the production of extensible paper

Publications (1)

Publication Number Publication Date
GB1603547A true GB1603547A (en) 1981-11-25

Family

ID=10145231

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20393/78A Expired GB1603547A (en) 1978-05-18 1978-05-18 Blanket for the production of extensible paper

Country Status (3)

Country Link
JP (1) JPS54151609A (en)
DE (1) DE2832054C2 (en)
GB (1) GB1603547A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229253A (en) * 1979-04-26 1980-10-21 Beloit Corporation Extended nip press with special belt reinforcement
US4229254A (en) * 1979-04-26 1980-10-21 Beloit Corporation Extended nip press with bias ply reinforced belt
US4238287A (en) * 1979-04-26 1980-12-09 Beliot Corporation Extended nip press with transverse stiffening means in the belt
FR2482147A1 (en) * 1980-04-16 1981-11-13 Binet Et Cie Ets Louis WET FELT FOR STATIONERY
GB2106555B (en) * 1981-09-15 1985-10-02 Albany Int Corp Improvements relating to extended nip dewatering presses and to the manufacture of belts for use in such presses
DE3629736A1 (en) * 1986-09-01 1988-03-03 Becker Gummiwerke Wet press for dewatering fibrous webs
JPS63130027U (en) * 1987-02-17 1988-08-25
DE3715153A1 (en) * 1987-05-07 1988-12-01 Voith Gmbh J M REINFORCED PRESS SHEATH FOR A PRESS DEVICE FOR TREATING RAIL-SHAPED GOODS, SUCH AS, FOR example, OF PAPER SHEETS, AND METHOD AND DEVICE FOR THE PRODUCTION THEREOF
WO2004026080A1 (en) 2002-09-03 2004-04-01 Kabushiki Kaisha Toyota Chuo Kenkyusho Seat
DE102007044552A1 (en) 2007-09-15 2009-03-19 Voith Patent Gmbh Conveyor belt with edge reinforcement
DE102015212481A1 (en) * 2015-07-03 2017-01-05 Contitech Transportbandsysteme Gmbh In the longitudinal direction endless closed band, in particular round baler belt
DE102015212480A1 (en) * 2015-07-03 2017-01-05 Contitech Transportbandsysteme Gmbh In the longitudinal direction endless closed band, in particular round baler belt

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2021975A (en) * 1931-02-10 1935-11-26 Cluett Peabody & Co Inc Method of and means for treating woven and the like fabrics and yarns
BE516549A (en) * 1952-06-11
NL240641A (en) * 1956-11-23 1900-01-01
FR1265868A (en) * 1960-05-16 1961-07-07 Michelin & Cie Further development of conveyor belts

Also Published As

Publication number Publication date
DE2832054A1 (en) 1979-11-22
DE2832054C2 (en) 1982-12-16
JPS5726224B2 (en) 1982-06-03
JPS54151609A (en) 1979-11-29

Similar Documents

Publication Publication Date Title
US4238287A (en) Extended nip press with transverse stiffening means in the belt
US4229253A (en) Extended nip press with special belt reinforcement
US4229254A (en) Extended nip press with bias ply reinforced belt
GB1603547A (en) Blanket for the production of extensible paper
US3941005A (en) Power transmission belt
US3968703A (en) Endless power transmission belt
KR101156981B1 (en) Press belt
US2167384A (en) Belt
CA1153922A (en) Extended nip press
US3996813A (en) Endless power transmission belt
US4296640A (en) Power transmission V-belt and method of manufacture
US10730210B2 (en) Flexibility-controlled composite material and method of manufacture
US2114517A (en) Tension band
WO2015174480A1 (en) Endless flat belt and method for manufacturing same
US20080153647A1 (en) Endless Belt
US2194833A (en) Endless v-type belt
US6216852B1 (en) Conveyor belt with heavier lower reinforcing layer
GB1574545A (en) Power transmission belts
JP5523808B2 (en) Aircraft pneumatic tire
EP0975898B1 (en) Method of making a reinforcing fabric for power transmission belts
EP2028317B1 (en) Belt for shoe press
JP2018058338A (en) Transmission belt and manufacturing method of transmission belt
JPH07251606A (en) Radial ply tire for car wheel
US2698032A (en) Check strap for looms
SE445575B (en) Elastomeric Elements, Separate for Elastic Couplings

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19980517