Patent US3886016A successfully refreshed from Google Patents.
US3886016A
Expired / Lapsed
US
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Method and apparatus for making a reinforced wall
Assignee: Owens Corning
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Filing: 1972-12-29
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Granted: 1975-05-27
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Expires: 1992-12-29
Abstract
Abstract A method and apparatus for making a rib construction for reinforcing fluid retaining walls, particularly walls formed of reinforced synthetic resin. The method involves the application to the wall of a prefabricated rib form of convex cross-section radially encircling the wall, winding a plurality of layers of resin-impregnated fibrous reinforcement mat on the rib form and the concurrent winding of spaced bundles of resin-impregnated radial filament wound roving wound onto the rib form, the filament windings being placed at the crown and the feet of the mat-covered rib form. The windings are separated or spaced during the rib build-up to cover and reinforce specific portions of the rib. The apparatus for making such ribs is also disclosed, whereby the rib form and the mat layers are placed and secured on the wall. The apparatus facilitates the insertion of the rib form and mat layers at the nip defined by the tensioned filament wound roving extending tangentially of the wall as is rotated past a non-rotatable work station. The method and apparatus are specifically disclosed for forming radial ribs on a rotatable, axially movable endless wall formed on a band-type mandrel, the work station moving axially with the wall.
Inventors
- 👤 Agnar Gilbu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:08
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/08; B29C41/085; B29C53/00; B29C53/56; B29C53/58; B29C53/583; B29C53/587; B29C53/74
Claims Analysis
Total Claims: 84
Claim 1
Independent Claim
22 words
IN A METHOD OF MAKING AN EXTERIOR PERIPHERAL SUPPORT RIB FOR A CYLINDRICAL WALL STRUCTURE HAVING A LONGITUDIANL AXIS, THE STEPS OF
Claim 2
Dependent Claim
22 words
IN A METHOD OF MAKING AN EXTERIOR PERIPHERAL SUPPORT RIB FOR A CYLINDRICAL WALL STRUCTURE HAVING A LONGITUDIANL AXIS, THE STEPS OF
Claim 3
Dependent Claim
8 words
ROTATING SAID WAL STRUCTURE ABOUT ITS LONGITUDINAL AXIS,
Claim 4
Dependent Claim
8 words
ROTATING SAID WAL STRUCTURE ABOUT ITS LONGITUDINAL AXIS,
Claim 5
Dependent Claim
58 words
WINDING PERIPHERALLY UPON SAID WALL STRUCTURE A PLURALITY OF GROUPS OF ENDLESS, RESIN-IMPREGNATED REINFORCING FILAMENTS TRAVERSING MOVABLE GUIDE ELEMENTS LOCATED AT A NON-ROTATABLE WORK STATION, SAID GROUPS OF FILAMENTS BEING AXIALLY SPACED FROM ONE ANOTHER ALONG SAID LONGITUDINAL AXIS, AND SAID FILAMENTS BEING TENSIONED AXIALLY TO LIE GENERALLY TANGENTIALLY TO SAID WALL AT THE POINT OF FILAMENTWALL CONTACT,
Claim 6
Dependent Claim
58 words
WINDING PERIPHERALLY UPON SAID WALL STRUCTURE A PLURALITY OF GROUPS OF ENDLESS, RESIN-IMPREGNATED REINFORCING FILAMENTS TRAVERSING MOVABLE GUIDE ELEMENTS LOCATED AT A NON-ROTATABLE WORK STATION, SAID GROUPS OF FILAMENTS BEING AXIALLY SPACED FROM ONE ANOTHER ALONG SAID LONGITUDINAL AXIS, AND SAID FILAMENTS BEING TENSIONED AXIALLY TO LIE GENERALLY TANGENTIALLY TO SAID WALL AT THE POINT OF FILAMENTWALL CONTACT,
Claim 7
Dependent Claim
58 words
winding peripherally upon said wall structure a plurality of groups of endless, resin-impregnated reinforcing filaments traversing movable guide elements located at a non-rotatable work station, said groups of filaments being axially spaced from one another along said longitudinal axis, and said filaments being tensioned axially to lie generally tangentially to said wall at the point of filament-wall contact,
Claim 8
Dependent Claim
58 words
winding peripherally upon said wall structure a plurality of groups of endless, resin-impregnated reinforcing filaments traversing movable guide elements located at a non-rotatable work station, said groups of filaments being axially spaced from one another along said longitudinal axis, and said filaments being tensioned axially to lie generally tangentially to said wall at the point of filament-wall contact,
Claim 9
Dependent Claim
33 words
In a method of fabricating a peripheral support rib for a cylindrical wall of partially cured resin and reinforcing fibers admixed with said resin, said wall having a longitudinal axis, the steps of
Claim 10
Dependent Claim
33 words
In a method of fabricating a peripheral support rib for a cylindrical wall of partially cured resin and reinforcing fibers admixed with said resin, said wall having a longitudinal axis, the steps of
Claim 11
Dependent Claim
32 words
affixing to said wall the free ends of a plurality of bundles of resin-impregnated, elongated reinforcing filaments, said plurality of bundles being spaced from one another along the axis of said wall.
Claim 12
Dependent Claim
32 words
affixing to said wall the free ends of a plurality of bundles of resin-impregnated, elongated reinforcing filaments, said plurality of bundles being spaced from one another along the axis of said wall.
Claim 13
Dependent Claim
27 words
peripherally winding upon said wall a plurality of groups of endless resin-impregnated reinforcing filaments traversing filament guides movable relative to one another and to the work station,
Claim 14
Dependent Claim
27 words
peripherally winding upon said wall a plurality of groups of endless resin-impregnated reinforcing filaments traversing filament guides movable relative to one another and to the work station,
Claim 15
Dependent Claim
19 words
means for radially filament winding on said wall a plurality of bundles of endless filaments impregnated with curable resin,
Claim 16
Dependent Claim
19 words
means for radially filament winding on said wall a plurality of bundles of endless filaments impregnated with curable resin,
Claim 17
Dependent Claim
17 words
In a method of making a peripheral support rib for an endless cylindrical wall the steps of
Claim 18
Dependent Claim
17 words
In a method of making a peripheral support rib for an endless cylindrical wall the steps of
Claim 19
Dependent Claim
24 words
tensioning said filaments as they are wound so that the filaments lie tangentially to the wall at their points of contact with the wall,
Claim 20
Dependent Claim
24 words
tensioning said filaments as they are wound so that the filaments lie tangentially to the wall at their points of contact with the wall,
Claim 21
Dependent Claim
40 words
peripherally winding said bundles of filaments about said wall in an essentially radial plane, said filaments being tensioned to project tangentially of said wall in proximity to said station, thereby defining a nip located at the wall adjacent said station,
Claim 22
Dependent Claim
40 words
peripherally winding said bundles of filaments about said wall in an essentially radial plane, said filaments being tensioned to project tangentially of said wall in proximity to said station, thereby defining a nip located at the wall adjacent said station,
Claim 23
Dependent Claim
17 words
means for tensioning said filaments to tangentially contact said wall at the location of said work station,
Claim 24
Dependent Claim
17 words
means for tensioning said filaments to tangentially contact said wall at the location of said work station,
Claim 25
Dependent Claim
35 words
feeding a pre-fabricated, resin-impregnated elongated rib assembly from said work station into the nip between said tangential filaments and said wall, said filaments under tension pulling said prefabricated rib assembly radially onto said wall structure,
Claim 26
Dependent Claim
35 words
feeding a pre-fabricated, resin-impregnated elongated rib assembly from said work station into the nip between said tangential filaments and said wall, said filaments under tension pulling said prefabricated rib assembly radially onto said wall structure,
Claim 27
Dependent Claim
35 words
FEEDING A PRE-FABRICATED, RESIN-IMPREGNATED ELONGATED RIB ASSEMBLY FROM SAID WORK STATION INTO THE NIP BETWEEN SAID TANGENTIAL FILAMENTS AND SAID WALL, SAID FILAMENTS UNDER TENSION PULLING SAID PREFABRICATED RIB ASSEMBLY INTO ONTO SAID WALL STURCTURE,
Claim 28
Dependent Claim
35 words
FEEDING A PRE-FABRICATED, RESIN-IMPREGNATED ELONGATED RIB ASSEMBLY FROM SAID WORK STATION INTO THE NIP BETWEEN SAID TANGENTIAL FILAMENTS AND SAID WALL, SAID FILAMENTS UNDER TENSION PULLING SAID PREFABRICATED RIB ASSEMBLY INTO ONTO SAID WALL STURCTURE,
Claim 29
Dependent Claim
22 words
CONTAINUING TO FEED SAID PRE-FABRICATED RIB ASSEMBLY INTO NIP UNITL SAID WALL STRUCTURE IS COMPLETELY ENCIRCLED BY SAID PREFABRICATED RIB ASSEMBLY, AND
Claim 30
Dependent Claim
22 words
CONTAINUING TO FEED SAID PRE-FABRICATED RIB ASSEMBLY INTO NIP UNITL SAID WALL STRUCTURE IS COMPLETELY ENCIRCLED BY SAID PREFABRICATED RIB ASSEMBLY, AND
Claim 31
Dependent Claim
22 words
continuing to feed said pre-fabricated rib assembly into nip until said wall structure is completely encircled by said prefabricated rib assembly, and
Claim 32
Dependent Claim
22 words
continuing to feed said pre-fabricated rib assembly into nip until said wall structure is completely encircled by said prefabricated rib assembly, and
Claim 33
Dependent Claim
43 words
means located at said work station for feeding a pre-fabricated rib assembly between said filaments and said wall at the point of tangential contact therebetween, the tension of said filaments pulling said rib assembly into contact with the exterior of said wall, and
Claim 34
Dependent Claim
43 words
means located at said work station for feeding a pre-fabricated rib assembly between said filaments and said wall at the point of tangential contact therebetween, the tension of said filaments pulling said rib assembly into contact with the exterior of said wall, and
Claim 35
Dependent Claim
51 words
at said station, feeding (a) a generally convex rib form and (b) a resin-impregnated reinforcing fiber mat superimposed on said rib form into said nip while continuing the winding of said filaments, said filaments under tension radially forcing said rib form and said mat into arcuate peripheral contact with said wall,
Claim 36
Dependent Claim
51 words
at said station, feeding (a) a generally convex rib form and (b) a resin-impregnated reinforcing fiber mat superimposed on said rib form into said nip while continuing the winding of said filaments, said filaments under tension radially forcing said rib form and said mat into arcuate peripheral contact with said wall,
Claim 37
Dependent Claim
27 words
interposing a pre-fabricated, resin-impregnated rib assembly between said filaments and said wall at their common points of tangency while advancing the rib assembly with said work station,
Claim 38
Dependent Claim
27 words
interposing a pre-fabricated, resin-impregnated rib assembly between said filaments and said wall at their common points of tangency while advancing the rib assembly with said work station,
Claim 39
Dependent Claim
99 words
In a method of making an exterior support rib for a cylindrical wall structure having a longitudinal axis, said rib including a rib form encircling the wall structure, the improvement of filament winding a plurality of axially spaced bundles of filament rovings onto said rib form, each such bundle traversing a filament guide initially aligned with a specific portion of said rib form, and progressively displacing some of said filament guides relative to others of said guides during the filament winding to corresponding progressively superimpose the respective bundles traversing the displaced guides on different portions of said rib form.
Claim 40
Dependent Claim
99 words
In a method of making an exterior support rib for a cylindrical wall structure having a longitudinal axis, said rib including a rib form encircling the wall structure, the improvement of filament winding a plurality of axially spaced bundles of filament rovings onto said rib form, each such bundle traversing a filament guide initially aligned with a specific portion of said rib form, and progressively displacing some of said filament guides relative to others of said guides during the filament winding to corresponding progressively superimpose the respective bundles traversing the displaced guides on different portions of said rib form.
Claim 41
Dependent Claim
116 words
In a method of making an exterior support rib for a cylindrical wall having a longitudinal axis, the wall being rotated and axially advanced as the method is carried out, and the rib being built up on a rib form encircling the wall, the steps of advancing a pivotable plate in synchronism with the axial advance of the wall carrying the rib form, tensioning a plurality of bundles of reinforcing filaments from a source of such filaments past guides on said plate and onto said rib form, and pivoting said plate as a consequence of advancement of said plate to vary the positions of said guides and the placement of said filaments on said rib form.
Claim 42
Dependent Claim
116 words
In a method of making an exterior support rib for a cylindrical wall having a longitudinal axis, the wall being rotated and axially advanced as the method is carried out, and the rib being built up on a rib form encircling the wall, the steps of advancing a pivotable plate in synchronism with the axial advance of the wall carrying the rib form, tensioning a plurality of bundles of reinforcing filaments from a source of such filaments past guides on said plate and onto said rib form, and pivoting said plate as a consequence of advancement of said plate to vary the positions of said guides and the placement of said filaments on said rib form.
Claim 43
Dependent Claim
28 words
terminating the feeding of said rib form when said rib form completely encircles said wall, while continuing the feeding of said mat and the winding of sAid filaments,
Claim 44
Dependent Claim
28 words
terminating the feeding of said rib form when said rib form completely encircles said wall, while continuing the feeding of said mat and the winding of sAid filaments,
Claim 45
Dependent Claim
72 words
means for progressively axially spreading said bundles of filaments to overlie selected portions of said rib assembly, including a fixed guide located at the work station for guiding a first medial bundle of filaments onto the prefabricated rib, a plurality of movable guide elements at said work station for guiding additional bundles of filaments onto said prefabricated rib, and means for displacing said movable guide elements relative to said fixed guide element.
Claim 46
Dependent Claim
72 words
means for progressively axially spreading said bundles of filaments to overlie selected portions of said rib assembly, including a fixed guide located at the work station for guiding a first medial bundle of filaments onto the prefabricated rib, a plurality of movable guide elements at said work station for guiding additional bundles of filaments onto said prefabricated rib, and means for displacing said movable guide elements relative to said fixed guide element.
Claim 47
Dependent Claim
32 words
continuing the peripheral winding of said filaments upon said pre-fabricated rib assembly to build up a plurality of layers of filaments wound radially thereon at axially spaced portions of said pre-fabricated rib,
Claim 48
Dependent Claim
32 words
continuing the peripheral winding of said filaments upon said pre-fabricated rib assembly to build up a plurality of layers of filaments wound radially thereon at axially spaced portions of said pre-fabricated rib,
Claim 49
Dependent Claim
21 words
utilizing the tension of said filaments to force said pre-fabricated rib assembly snugly against said wall to peripherally encircle said wall,
Claim 50
Dependent Claim
21 words
utilizing the tension of said filaments to force said pre-fabricated rib assembly snugly against said wall to peripherally encircle said wall,
Claim 51
Dependent Claim
32 words
CONTINUING THE PERIPHERA WINDING OF SAID FILAMENTS UPON SAID PRE-FABRICATED RIB ASEMBLY TO BUILD UP A PLURALITY OF LAYERS OF FILAMENTS WOUND RADIALLY THEREON AT AXIALLY SPACED PORTIONS OF SAID PER-FABRICATED RIB,
Claim 52
Dependent Claim
32 words
CONTINUING THE PERIPHERA WINDING OF SAID FILAMENTS UPON SAID PRE-FABRICATED RIB ASEMBLY TO BUILD UP A PLURALITY OF LAYERS OF FILAMENTS WOUND RADIALLY THEREON AT AXIALLY SPACED PORTIONS OF SAID PER-FABRICATED RIB,
Claim 53
Dependent Claim
30 words
MOVING SAID GUIDE ELEMENTS RELATIVE TO SAID RIB ASEMBLY DURING THE PERFORMANCE OF STEPS 5 TO VARY THE AXIAL SPSPACING SAID PRE-FABRICATED RIB ASSEMBLY TO BUILD UP A PLURALITY OF
Claim 54
Dependent Claim
30 words
MOVING SAID GUIDE ELEMENTS RELATIVE TO SAID RIB ASEMBLY DURING THE PERFORMANCE OF STEPS 5 TO VARY THE AXIAL SPSPACING SAID PRE-FABRICATED RIB ASSEMBLY TO BUILD UP A PLURALITY OF
Claim 55
Dependent Claim
20 words
terminating the feeding of said mat after a plurality of layers of mat have been superimposed on said rib form,
Claim 56
Dependent Claim
20 words
terminating the feeding of said mat after a plurality of layers of mat have been superimposed on said rib form,
Claim 57
Dependent Claim
26 words
moving said guide elements relative to said rib assembly during the performance of step 5 to vary the axial spacing of said groups of filaments and
Claim 58
Dependent Claim
26 words
moving said guide elements relative to said rib assembly during the performance of step 5 to vary the axial spacing of said groups of filaments and
Claim 59
Dependent Claim
43 words
moving said filament guides relative to one another and relative to said work station while superimposing additional wound filaments on said rib assembly to reinforce different portions of the rib assembly and to bind the different portions of the rib to said wall,
Claim 60
Dependent Claim
43 words
moving said filament guides relative to one another and relative to said work station while superimposing additional wound filaments on said rib assembly to reinforce different portions of the rib assembly and to bind the different portions of the rib to said wall,
Claim 61
Dependent Claim
123 words
In a method of making an exterior support rib for a cylindrical wall having a longitudinal axis, the wall being rotated and axially advanced as the method is carried out, and the rib being built up on a rib form encircling the wall, the steps of advancing a plurality of axially spaced filament guides in synchronism with the axial advance of the wall carrying the rib form, applying a plurality of bundles of reinforcing filaments onto said rib form, said bundles each contacting one of said filament guides to position each bundle on the rib form, and varying the positions of said guides relative to one anOther as said guides are advanced to vary the placement of said filaments on said rib form.
Claim 62
Dependent Claim
123 words
In a method of making an exterior support rib for a cylindrical wall having a longitudinal axis, the wall being rotated and axially advanced as the method is carried out, and the rib being built up on a rib form encircling the wall, the steps of advancing a plurality of axially spaced filament guides in synchronism with the axial advance of the wall carrying the rib form, applying a plurality of bundles of reinforcing filaments onto said rib form, said bundles each contacting one of said filament guides to position each bundle on the rib form, and varying the positions of said guides relative to one anOther as said guides are advanced to vary the placement of said filaments on said rib form.
Claim 63
Dependent Claim
229 words
In an apparatus for applying an encircling rib to a cylindrical wall for a tank or the like, said wall being supported for rotation about its longitudinal axis and being advanced axially along said longitudinal axis, the improvements of an endless chain located at said work station and having a horizontal reach parallel to the longitudinal axis of said wall, means for driving said chain so that said reach advances at the speed of axial advancement of said wall, a supply tray supported on said chain for displacement therewith, a pivotal horizontal plate journalled by said tray and having a plurality of vertically extending filament guide means movable with said plate, said filaments being tensioned from a source into contact with said guide means and then to said wall to tangentially contact said wall at a location radially aligned with said guide means, means on said tray movable therewith for feeding a pre-fabricated rib assembly between said filaments and said wall at the point of tangential contact therebetween, the tension of said filaments pulling said rib assembly into contact with the exterior of said wall, fixed cam means adjacent said chain, and cam follower means on said pivotal plate engageable with said cam means as said tray advances with the chain to pivot said plate and vary the location of said filament guide means relative to said rib assembly.
Claim 64
Dependent Claim
229 words
In an apparatus for applying an encircling rib to a cylindrical wall for a tank or the like, said wall being supported for rotation about its longitudinal axis and being advanced axially along said longitudinal axis, the improvements of an endless chain located at said work station and having a horizontal reach parallel to the longitudinal axis of said wall, means for driving said chain so that said reach advances at the speed of axial advancement of said wall, a supply tray supported on said chain for displacement therewith, a pivotal horizontal plate journalled by said tray and having a plurality of vertically extending filament guide means movable with said plate, said filaments being tensioned from a source into contact with said guide means and then to said wall to tangentially contact said wall at a location radially aligned with said guide means, means on said tray movable therewith for feeding a pre-fabricated rib assembly between said filaments and said wall at the point of tangential contact therebetween, the tension of said filaments pulling said rib assembly into contact with the exterior of said wall, fixed cam means adjacent said chain, and cam follower means on said pivotal plate engageable with said cam means as said tray advances with the chain to pivot said plate and vary the location of said filament guide means relative to said rib assembly.
Claim 65
Dependent Claim
14 words
and finally concurrently curing the resin of said rib assembly and of said filaments.
Claim 66
Dependent Claim
14 words
and finally concurrently curing the resin of said rib assembly and of said filaments.
Claim 67
Dependent Claim
13 words
concurrently curing the resin of said pre-fabricated rib and of said filament windings.
Claim 68
Dependent Claim
13 words
concurrently curing the resin of said pre-fabricated rib and of said filament windings.
Claim 69
Dependent Claim
28 words
continuing the winding of said filaments after termination of the feeding of said mat to build up additional layers of filament windings on the uppermost layer of mat,
Claim 70
Dependent Claim
28 words
continuing the winding of said filaments after termination of the feeding of said mat to build up additional layers of filament windings on the uppermost layer of mat,
Claim 71
Dependent Claim
13 words
CONCURRENTLY CURING THE RESIN OF SAID PRE-FABRICATED RIB AND OF SAID FILAMENT WINDINGS.
Claim 72
Dependent Claim
13 words
CONCURRENTLY CURING THE RESIN OF SAID PRE-FABRICATED RIB AND OF SAID FILAMENT WINDINGS.
Claim 73
Dependent Claim
38 words
varying the spacing of said bundles of filaments from one another axially of said wall during the performance of steps 4, 5 and 7 to selectively place the successive layers of filament windings on the resultant rib structure,
Claim 74
Dependent Claim
38 words
varying the spacing of said bundles of filaments from one another axially of said wall during the performance of steps 4, 5 and 7 to selectively place the successive layers of filament windings on the resultant rib structure,
Claim 75
Dependent Claim
28 words
In an appratus for applying an encircling rib to a cylindrical wall for a tank or the like, said wall being supported for rotation about its longitudinal axis,
Claim 76
Dependent Claim
28 words
In an appratus for applying an encircling rib to a cylindrical wall for a tank or the like, said wall being supported for rotation about its longitudinal axis,
Claim 77
Dependent Claim
7 words
terminating the winding of said filaments, and
Claim 78
Dependent Claim
7 words
terminating the winding of said filaments, and
Claim 79
Dependent Claim
216 words
In an apparatus for applying an encircling rib to a cylindrical wall for a tank or the like, said wall being supported for rotation about its longitudinal axis and being advanced axially along said longitudinal axis, the improvements of means defining a non-rotatable work station radially aligned with the location of the rib including an endless chain located at said work station and having a horizontal reach parallel to the longitudinal axis of said wall, means for driving said chain so that it advances at the speed of axial advancement of said wall, means for radially filament winding on said wall a plurality of bundles of endless filaments impregnated with curable resin and including filament guide means movable with said chain means for tensioning said filaments into tangential contact said wall at a location radially aligned with said guide means, and means carried by said chain and movable therewith for feeding a pre-fabricated rib assembly between said filaments and said wall at the point of tangential contact therebetween, the tension of said filaments pulling said rib assembly into contact with the exterior of said wall, said filament guide means including a pivot plate, filament-contacting guides carried by said plate, and means for pivoting said pLate relative to said chain to vary the spacing of said guides.
Claim 80
Dependent Claim
216 words
In an apparatus for applying an encircling rib to a cylindrical wall for a tank or the like, said wall being supported for rotation about its longitudinal axis and being advanced axially along said longitudinal axis, the improvements of means defining a non-rotatable work station radially aligned with the location of the rib including an endless chain located at said work station and having a horizontal reach parallel to the longitudinal axis of said wall, means for driving said chain so that it advances at the speed of axial advancement of said wall, means for radially filament winding on said wall a plurality of bundles of endless filaments impregnated with curable resin and including filament guide means movable with said chain means for tensioning said filaments into tangential contact said wall at a location radially aligned with said guide means, and means carried by said chain and movable therewith for feeding a pre-fabricated rib assembly between said filaments and said wall at the point of tangential contact therebetween, the tension of said filaments pulling said rib assembly into contact with the exterior of said wall, said filament guide means including a pivot plate, filament-contacting guides carried by said plate, and means for pivoting said pLate relative to said chain to vary the spacing of said guides.
Claim 81
Dependent Claim
207 words
In an apparatus for applying an encircling rib to a cylindrical wall for a tank or the like, said wall being supported for rotation about its longitudinal axis and being advanced axially along said longitudinal axis, the improvements of means defining a non-rotatable work station radially aligned with the location of the rib including an endless chain located at said work station and having a horizontal reach parallel to the longitudinal axis of said wall, means for driving said chain so that it advances at the speed of axial advancement of said wall, means for radially filament winding on said wall a plurality of bundles of endless filaments impregnated with curable resin and including a tray carried by said chain, a pivot plate movable relative to said tray, filament guide means mounted on said plate, and cam and follower means for pivoting said plate, means for tensioning said filaments into tangential contact said wall at a location radially aligned with said guide means, and means on said tray and movable therewith for feeding a prefabricated rib assembly between said filaments and said wall at the point of tangential contact therebetween, the tension of said filaments pulling said rib assembly into contact with the exterior of said wall.
Claim 82
Dependent Claim
207 words
In an apparatus for applying an encircling rib to a cylindrical wall for a tank or the like, said wall being supported for rotation about its longitudinal axis and being advanced axially along said longitudinal axis, the improvements of means defining a non-rotatable work station radially aligned with the location of the rib including an endless chain located at said work station and having a horizontal reach parallel to the longitudinal axis of said wall, means for driving said chain so that it advances at the speed of axial advancement of said wall, means for radially filament winding on said wall a plurality of bundles of endless filaments impregnated with curable resin and including a tray carried by said chain, a pivot plate movable relative to said tray, filament guide means mounted on said plate, and cam and follower means for pivoting said plate, means for tensioning said filaments into tangential contact said wall at a location radially aligned with said guide means, and means on said tray and movable therewith for feeding a prefabricated rib assembly between said filaments and said wall at the point of tangential contact therebetween, the tension of said filaments pulling said rib assembly into contact with the exterior of said wall.
Claim 83
Dependent Claim
21 words
effecting a common final curing of the resin of said wall and of said rib to yield an integral monolithic structure.
Claim 84
Dependent Claim
21 words
effecting a common final curing of the resin of said wall and of said rib to yield an integral monolithic structure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |