Patent CA908382A successfully refreshed from Google Patents.
Patent US4632342A successfully refreshed from Google Patents.
US4632342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gutter system
Assignee: DAYMOND REDPATH INDUSTRIES Ltd
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Filing: 1984-12-12
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Granted: 1986-12-30
•
Expires: 2004-12-12
Abstract
Abstract A gutter section of plastics material comprising front and rear walls and a bottom, the front and rear walls carrying fastening elements for being removably secured to complementary fastening elements of a hanger bracket and a raised bead or projection on the inner surface of the rear wall extending in the same direction as the top of the rear wall and spaced therefrom whereby when a hanger bracket is secured to the gutter section, a hanger bracket engages the bead or projection on the rear wall of the gutter to rigidify the structure and permit ease of expansion and contraction of the gutter section relative to any hanger brackets supporting the gutter section.
Inventors
- 👤 James Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:13
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/04; E04D13/064; E04D13/072; E04D13/0725; E04D13/068
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
350 words
A gutter system of thermoplastics expandable and contractable material for mounting to a wall, the gutter system comprising a plurality of gutter sections for being joined together and a plurality of hanger brackets for mounting the sections to the wall, each hanger bracket comprising a mounting plate for mounting the hanger bracket to the wall, a beam secured to the mounting plate and extending therefrom to an end remote the mounting plate, a downwardly opening channel carried by the beam proximate the mounting plate, the channel having a reduced or restricted mouth portion for receiving and securing a resiliently deformable lip carried on the top of the rear wall of each gutter section which lip deforms when pressed through the mouth of the channel into the channel and resiliently restores for locking in the channel, the gutter comprising front and rear walls and a bottom, the top of the rear wall carrying a resiliently deformable lip for being inserted and secured in the channel by being pressed through the restricted channel mouth portion into the channel to restore therein to its normal configuration and be precluded from being removed until resiliently depressed to be removed through the channel mouth, complementary fastening elements at the end of the beam remote the mounting plate and on top of the front wall of the gutter for securing together, and a raised bead or projection on the inner surface of the rear wall extending in the same direction as the lip carried on the top of the rear wall and spaced therefrom whereby when the lip is in the channel, and the complementary fastening elements secured, the beam portion proximate the mounting plate of each hanger bracket engages the bead or projection on the rear wall of the gutter to rigidify the structure and permit ease of expansion and contraction of the gutter sections relative to the hanger brackets supporting the gutter sections, and the mounting plate spaces the rear wall of the gutter sections from the wall to which the gutter system is secured to ease expansion and contraction of the gutter sections.
Claim 2
Dependent Claim
350 words
A gutter system of thermoplastics expandable and contractable material for mounting to a wall, the gutter system comprising a plurality of gutter sections for being joined together and a plurality of hanger brackets for mounting the sections to the wall, each hanger bracket comprising a mounting plate for mounting the hanger bracket to the wall, a beam secured to the mounting plate and extending therefrom to an end remote the mounting plate, a downwardly opening channel carried by the beam proximate the mounting plate, the channel having a reduced or restricted mouth portion for receiving and securing a resiliently deformable lip carried on the top of the rear wall of each gutter section which lip deforms when pressed through the mouth of the channel into the channel and resiliently restores for locking in the channel, the gutter comprising front and rear walls and a bottom, the top of the rear wall carrying a resiliently deformable lip for being inserted and secured in the channel by being pressed through the restricted channel mouth portion into the channel to restore therein to its normal configuration and be precluded from being removed until resiliently depressed to be removed through the channel mouth, complementary fastening elements at the end of the beam remote the mounting plate and on top of the front wall of the gutter for securing together, and a raised bead or projection on the inner surface of the rear wall extending in the same direction as the lip carried on the top of the rear wall and spaced therefrom whereby when the lip is in the channel, and the complementary fastening elements secured, the beam portion proximate the mounting plate of each hanger bracket engages the bead or projection on the rear wall of the gutter to rigidify the structure and permit ease of expansion and contraction of the gutter sections relative to the hanger brackets supporting the gutter sections, and the mounting plate spaces the rear wall of the gutter sections from the wall to which the gutter system is secured to ease expansion and contraction of the gutter sections.
Claim 3
Dependent Claim
16 words
The gutter system of claim 1, wherein the beam is in the form of an I-beam.
Claim 4
Dependent Claim
33 words
The gutter system of claim 1, wherein the beam is in the form of an I-beam triangular in shape with a taller web portion proximate the mounting plate than remote the mounting plate.
Claim 5
Dependent Claim
13 words
The gutter system of claim 1, wherein the resiliently deformable lip is V-shaped.
Claim 6
Dependent Claim
13 words
The gutter system of claim 2, wherein the resiliently deformable lip is V-shaped.
Claim 7
Dependent Claim
13 words
The gutter system of claim 3, wherein the resiliently deformable lip is V-shaped.
Claim 8
Dependent Claim
16 words
The gutter system of claim 1, wherein each of the gutter sections is formed by extrusion.
Claim 9
Dependent Claim
16 words
The gutter system of claim 2, wherein each of the gutter sections is formed by extrusion.
Claim 10
Dependent Claim
16 words
The gutter system of claim 3, wherein each of the gutter sections is formed by extrusion.
Claim 11
Dependent Claim
16 words
The gutter system of claim 4, wherein each of the gutter sections is formed by extrusion.
Claim 12
Dependent Claim
16 words
The gutter system of claim 5, wherein each of the gutter sections is formed by extrusion.
Claim 13
Dependent Claim
16 words
The gutter system of claim 6, wherein each of the gutter sections is formed by extrusion.
Claim 14
Dependent Claim
77 words
The gutter system of claim 1, wherein the fastening element at the end of the beam comprises a channel proximate the end of the beam remote the mounting plate opening upwardly with a restricted mouth portion above the channel and a lip is provided on the front wall of each gutter section for insertion into the upwardly opening channel proximate the end of the beam by pushing the lip down through the channel mouth into the channel.
Claim 15
Dependent Claim
77 words
The gutter system of claim 2, wherein the fastening element at the end of the beam comprises a channel proximate the end of the beam remote the mounting plate opening upwardly with a restrictive mouth portion above the channel and a lip is provided on the front wall of each gutter section for insertion into the upwardly opening channel proximate the end of the beam by pushing the lip down through the channel mouth into the channel.
Claim 16
Dependent Claim
77 words
The gutter system of claim 3, wherein the fastening element at the end of the beam comprises a channel proximate the end of the beam remote the mounting plate opening upwardly with a restricted mouth portion above the channel and a lip is provided on the front wall of each gutter section for insertion into the upwardly opening channel proximate the end of the beam by pushing the lip down through the channel mouth into the channel.
Claim 17
Dependent Claim
77 words
The gutter system of claim 4, wherein the fastening element at the end of the beam comprises a channel proximate the end of the beam remote the mounting plate opening upwardly with a restricted mouth portion above the channel and a lip is provided on the front wall of each gutter section for insertion into the upwardly opening channel proximate the end of the beam by pushing the lip down through the channel mouth into the channel.
Claim 18
Dependent Claim
77 words
The gutter system of claim 5, wherein the fastening element at the end of the beam comprises a channel proximate the end of the beam remote the mounting plate opening upwardly with a restricted mouth portion above the channel and a lip is provided on the front wall of each gutter section for insertion into the upwardly opening channel proximate the end of the beam by pushing the lip down through the channel mouth into the channel.
Claim 19
Dependent Claim
77 words
The gutter system of claim 6, wherein the fastening element at the end of the beam comprises a channel proximate the end of the beam remote the mounting plate opening upwardly with a restricted mouth portion above the channel and a lip is provided on the front wall of each gutter section for insertion into the upwardly opening channel proximate the end of the beam by pushing the lip down through the channel mouth into the channel.
Claim 20
Dependent Claim
77 words
The gutter system of claim 7, wherein the fastening element at the end of the beam comprises a channel proximate the end of the beam remote the mounting plate opening upwardly with a restricted mouth portion above the channel and a lip is provided on the front wall of each gutter section for insertion into the upwardly opening channel proximate the end of the beam by pushing the lip down through the channel mouth into the channel.
Claim 21
Dependent Claim
77 words
The gutter system of claim 8, wherein the fastening element at the end of the beam comprises a channel proximate the end of the beam remote the mounting plate opening upwardly with a restricted mouth portion above the channel and a lip is provided on the front wall of each gutter section for insertion into the upwardly opening channel proximate the end of the beam by pushing the lip down through the channel mouth into the channel.
Claim 22
Dependent Claim
77 words
The gutter system of claim 9, wherein the fastening element at the end of the beam comprises a channel proximate the end of the beam remote the mounting plate opening upwardly with a restricted mouth portion above the channel and a lip is provided on the front wall of each gutter section for insertion into the upwardly opening channel proximate the end of the beam by pushing the lip down through the channel mouth into the channel.
Claim 23
Dependent Claim
77 words
The gutter system of claim 10, wherein the fastening element at the end of the beam comprises a channel proximate the end of the beam remote the mounting plate opening upwardly with a restricted mouth portion above the channel and a lip is provided on the front wall of each gutter section for insertion into the upwardly opening channel proximate the end of the beam by pushing the lip down through the channel mouth into the channel.
Claim 24
Dependent Claim
77 words
The gutter system of claim 11, wherein the fastening element at the end of the beam comprises a channel proximate the end of the beam remote the mounting plate opening upwardly with a restricted mouth portion above the channel and a lip is provided on the front wall of each gutter section for insertion into the upwardly opening channel proximate the end of the beam by pushing the lip down through the channel mouth into the channel.
Claim 25
Dependent Claim
77 words
The gutter system of claim 12, wherein the fastening element at the end of the beam comprises a channel proximate the end of the beam remote the mounting plate opening upwardly with a restricted mouth portion above the channel and a lip is provided on the front wall of each gutter section for insertion into the upwardly opening channel proximate the end of the beam by pushing the lip down through the channel mouth into the channel.
Claim 26
Dependent Claim
149 words
A plastics hanger bracket for mounting a plastics gutter system, the hanger bracket comprising a mounting plate for mounting the hanger bracket on a wall, the mounting plate carrying at least one aperture therethrough for mounting the bracket to the wall, a beam secured to the mounting plate, the at least one aperture at approximately the same level as the beam is on the mounting plate, a pair of channels having reduced mouth portions carried between the beam and mounting plate, and proximate the end of the beam remote the mounting plate, for receiving and securing resiliently deformable lips carried on the top of front and rear walls of plastic gutter sections which lips deform when pressed through the mouth of the channel into the channel where they resiliently restore to their normal position to lock in the channel, the channel between the beam and mounting plate opening downwardly.
Claim 27
Dependent Claim
149 words
A plastics hanger bracket for mounting a plastics gutter system, the hanger bracket comprising a mounting plate for mounting the hanger bracket on a wall, the mounting plate carrying at least one aperture therethrough for mounting the bracket to the wall, a beam secured to the mounting plate, the at least one aperture at approximately the same level as the beam is on the mounting plate, a pair of channels having reduced mouth portions carried between the beam and mounting plate, and proximate the end of the beam remote the mounting plate, for receiving and securing resiliently deformable lips carried on the top of front and rear walls of plastic gutter sections which lips deform when pressed through the mouth of the channel into the channel where they resiliently restore to their normal position to lock in the channel, the channel between the beam and mounting plate opening downwardly.
Claim 28
Dependent Claim
16 words
The hanger bracket of claim 25, wherein the beam is in the form of an I-beam.
Claim 29
Dependent Claim
35 words
The hanger bracket of claim 25, wherein the beam is in the form of a modified I-beam being triangular in shape with a wider beam portion proximate the mounting plate than remote the mounting plate.
Claim 30
Dependent Claim
30 words
The hanger bracket of claim 25, wherein the channel proximate the end of the beam remote the mounting plate opens upwardly and has a restricted mouth portion above the channel.
Claim 31
Dependent Claim
30 words
The hanger bracket of claim 26, wherein the channel proximate the end of the beam remote the mounting plate opens upwardly and has a restricted mouth portion above the channel.
Claim 32
Dependent Claim
30 words
The hanger bracket of claim 27, wherein the channel proximate the end of the beam remote the mounting plate opens upwardly and has a restricted mouth portion above the channel.
Claim 33
Dependent Claim
191 words
A gutter section of expandable and contractable plastics material for mounting on a wall, the gutter section comprising front and rear walls and a bottom, the tops of each of the front and rear walls comprising resiliently deformable lips for being inserted and secured in channels carried by a beam of a hanger bracket by being pressed through restricted channel mouth portions of the hanger bracket leading into the channels to restore therein to their normal position and be precluded from being removed therefrom until resiliently laterally depressed to be removed through the channel mouth, the lips on the front wall being directed downwardly and the lips on the rear wall being directed upwardly, and a raised bead or projection on the inner surface of the rear wall extending in the same direction as the lip on the top of the rear wall and spaced therefrom whereby when the lips are in the channels, the beam proximate the mounting plate of each hanger bracket engages the bead or projection on the rear wall of the gutter to rigidify the structure and permit ease of expansion and contraction of the gutter section.
Claim 34
Dependent Claim
191 words
A gutter section of expandable and contractable plastics material for mounting on a wall, the gutter section comprising front and rear walls and a bottom, the tops of each of the front and rear walls comprising resiliently deformable lips for being inserted and secured in channels carried by a beam of a hanger bracket by being pressed through restricted channel mouth portions of the hanger bracket leading into the channels to restore therein to their normal position and be precluded from being removed therefrom until resiliently laterally depressed to be removed through the channel mouth, the lips on the front wall being directed downwardly and the lips on the rear wall being directed upwardly, and a raised bead or projection on the inner surface of the rear wall extending in the same direction as the lip on the top of the rear wall and spaced therefrom whereby when the lips are in the channels, the beam proximate the mounting plate of each hanger bracket engages the bead or projection on the rear wall of the gutter to rigidify the structure and permit ease of expansion and contraction of the gutter section.
Claim 35
Dependent Claim
326 words
A gutter system of thermoplastics expandable and contractable material for securing to a wall, comprising a plurality of gutter sections to be connected together and a plurality of hanger brackets for mounting the sections, each hanger bracket being of the cantilever type and comprising a back mounting plate and a tapered I-beam connected to, and extending laterally away from, the back mounting plate, a downwardly opening channel between the back mounting plate and the laterally extending member and having a reduced entrance to the channel narrower than a wider portion adjacent the reduced entrance within the channel, the modified tapered I-beam having a bearing surface on the modified tapered I-beam below the reduced entrance to the channel, and spaced from the mounting plate, the modified tapered I-beam further carrying a channel on the end of the tapered I-beam remote the mounting plate, this channel also having a reduced entrance to the channel, each gutter section comprising a longitudinally extending back wall, a bottom, and a front wall, the top edge of the back wall having an upwardly directed laterally depressible V-shaped projection, the top edge of the front wall having a laterally depressible V-shaped projection, both back and front projections extending longitudinally of the gutters to be laterally depressed when pushed past the reduced entrance of the channel, and on passing through the reduced entrance of each hanger bracket channel, restoring to its initial configuration in said channel upon entering the channel to prevent vertical removal thereof, and a longitudinal extending bead spaced below the top edge of the back wall against which bead the bearing surface of the hanger bracket abuts when the bracket supports the load of the gutter, to rigidify the structure and permit ease of expansion and contraction of the gutter sections relative to the hanger brackets and whereby the mounting plate spaces the rear wall of the gutter sections from the wall to ease expansion and contraction of the gutter sections.
Claim 36
Dependent Claim
326 words
A gutter system of thermoplastics expandable and contractable material for securing to a wall, comprising a plurality of gutter sections to be connected together and a plurality of hanger brackets for mounting the sections, each hanger bracket being of the cantilever type and comprising a back mounting plate and a tapered I-beam connected to, and extending laterally away from, the back mounting plate, a downwardly opening channel between the back mounting plate and the laterally extending member and having a reduced entrance to the channel narrower than a wider portion adjacent the reduced entrance within the channel, the modified tapered I-beam having a bearing surface on the modified tapered I-beam below the reduced entrance to the channel, and spaced from the mounting plate, the modified tapered I-beam further carrying a channel on the end of the tapered I-beam remote the mounting plate, this channel also having a reduced entrance to the channel, each gutter section comprising a longitudinally extending back wall, a bottom, and a front wall, the top edge of the back wall having an upwardly directed laterally depressible V-shaped projection, the top edge of the front wall having a laterally depressible V-shaped projection, both back and front projections extending longitudinally of the gutters to be laterally depressed when pushed past the reduced entrance of the channel, and on passing through the reduced entrance of each hanger bracket channel, restoring to its initial configuration in said channel upon entering the channel to prevent vertical removal thereof, and a longitudinal extending bead spaced below the top edge of the back wall against which bead the bearing surface of the hanger bracket abuts when the bracket supports the load of the gutter, to rigidify the structure and permit ease of expansion and contraction of the gutter sections relative to the hanger brackets and whereby the mounting plate spaces the rear wall of the gutter sections from the wall to ease expansion and contraction of the gutter sections.
Claim 37
Dependent Claim
19 words
The gutter system of claim 32, wherein the laterally depressible V-shaped projection on the front wall is directed downwardly.
Claim 38
Dependent Claim
168 words
The gutter system of claim 32, wherein the tapered I-beam comprises a modified tapered I-beam comprising a tapered central vertical web tapering in the direction away from the mounting plate, a top substantially horizontally extending flange carried on the top of the web, and a bottom generally angularly upwardly inclined flange which top and bottom flanges extend from both sides of the web, the downwardly opening channel extending longitudinally between the back mounting plate and a portion of the tapered I-beam being defined by the back mounting plate and a flange carried on the tapered central vertical web proximate the mounting plate, the configuration of the last flange from the bottom to the top thereof being oriented to slope angularly upwardly towards the back mounting plate then transversely away from the back mounting plate and then curving towards the back mounting plate, to provide, the bearing surface for abutting the longitudinally extending bead of the gutter, the reduced channel opening, and a wider portion proximate the channel opening.
Claim 39
Dependent Claim
168 words
The gutter system of claim 33, wherein the tapered I-beam comprises a modified tapered I-beam comprising a tapered central vertical web tapering in the direction away from the mounting plate, a top substantially horizontally extending flange carried on the top of the web, and a bottom generally angularly upwardly inclined flange which top and bottom flanges extend from both sides of the web, the downwardly opening channel extending longitudinally between the back mounting plate and a portion of the tapered I-beam being defined by the back mounting plate and a flange carried on the tapered central vertical web proximate the mounting plate, the configuration of the last flange from the bottom to the top thereof being oriented to slope angularly upwardly towards the back mounting plate then transversely away from the back mounting plate and then curving towards the back mounting plate, to provide, the bearing surface for abutting the longitudinally extending bead of the gutter, the reduced channel opening, and a wider portion proximate the channel opening.
Claim 40
Dependent Claim
42 words
The gutter system of claim 34, wherein the back mounting plate and the tapered I-beam are joined at the upper end of the channel proximate the top substantially horizontally extending flange or by an extension of that flange to the mounting plate.
Claim 41
Dependent Claim
42 words
The gutter system of claim 35, wherein the back mounting plate and the tapered I-beam are joined at the upper end of the channel proximate the top substantially horizontally extending flange or by an extension of that flange to the mounting plate.
Claim 42
Dependent Claim
114 words
A gutter section of plastics material comprising front and rear walls and a bottom, the front and rear walls carrying fastening elements for being removably secured to complementary fastening elements of a hanger bracket and a raised bead or projection on the inner surface of the rear wall extending in the same direction as the top of the rear wall and spaced therefrom so that when a hanger bracket is secured to the gutter section, the hanger bracket engages the bead or projection on the rear wall of the gutter to rigidify the structure and permit ease of expansion and contraction of the gutter section relative to any hanger brackets supporting the gutter section.
Claim 43
Dependent Claim
114 words
A gutter section of plastics material comprising front and rear walls and a bottom, the front and rear walls carrying fastening elements for being removably secured to complementary fastening elements of a hanger bracket and a raised bead or projection on the inner surface of the rear wall extending in the same direction as the top of the rear wall and spaced therefrom so that when a hanger bracket is secured to the gutter section, the hanger bracket engages the bead or projection on the rear wall of the gutter to rigidify the structure and permit ease of expansion and contraction of the gutter section relative to any hanger brackets supporting the gutter section.
Claim 44
Dependent Claim
52 words
The gutter section of claim 38, wherein the tops of each of the front and rear walls of the gutter section comprise resiliently deformable lips for being inserted and secured in channels carried by a beam of a hanger bracket by being pressed through restricted channel mouth portions of the hanger bracket.
Claim 45
Dependent Claim
203 words
A gutter system of thermoplastics material comprising a plurality of gutter sections for being joined together and a plurality of hanger brackets for mounting the sections, each hanger bracket comprising, a mounting plate for mounting the hanger bracket on a wall, a member extending therefrom to an end remote the mounting plate, and fastening elements carried by the hanger bracket proximate the mounting plate and the end of the hanger bracket remote the mounting plate, and each gutter section comprises a bottom and front and rear walls, the front and rear walls comprising complementary fastening elements for being secured to the fastening elements carried by the hanger, each gutter section further comprising a raised bead or projection on the inner surface of the rear wall extending in the same direction as the top of the gutter section and spaced therefrom so that when the hanger bracket is secured to the gutter by the securing of the fastening elements and complementary fastening elements, a larger bracket portion proximate the mounting plate engages the bead or projection on the rear wall to rigidify the structure and permits ease of expansion and contraction of the gutter section relative to any hanger brackets supporting the gutter section.
Claim 46
Dependent Claim
203 words
A gutter system of thermoplastics material comprising a plurality of gutter sections for being joined together and a plurality of hanger brackets for mounting the sections, each hanger bracket comprising, a mounting plate for mounting the hanger bracket on a wall, a member extending therefrom to an end remote the mounting plate, and fastening elements carried by the hanger bracket proximate the mounting plate and the end of the hanger bracket remote the mounting plate, and each gutter section comprises a bottom and front and rear walls, the front and rear walls comprising complementary fastening elements for being secured to the fastening elements carried by the hanger, each gutter section further comprising a raised bead or projection on the inner surface of the rear wall extending in the same direction as the top of the gutter section and spaced therefrom so that when the hanger bracket is secured to the gutter by the securing of the fastening elements and complementary fastening elements, a larger bracket portion proximate the mounting plate engages the bead or projection on the rear wall to rigidify the structure and permits ease of expansion and contraction of the gutter section relative to any hanger brackets supporting the gutter section.
Claim 47
Dependent Claim
221 words
A gutter system of expandable and contractable thermoplastics material comprising a plurality of gutter sections for being joined together and a plurality of cantilevered hanger brackets for mounting the sections to a wall, each hanger bracket comprising, a mounting plate for mounting the hanger bracket on a wall, a cantilever member extending therefrom to an end remote the mounting plate, and fastening elements carried by the hanger bracket proximate the mounting plate and the end of the cantilever beam of the hanger bracket remote the mounting plate, the fastening element on the bracket proximate the mounting plate comprising a downwardly opening channel providing a restricted channel mouth portion, each gutter section comprising a bottom and front and rear walls comprising fastening elements for being secured to the fastening elements carried by each hanger bracket, the gutter sections and hanger brackets when secured together further comprises a raised bead or projection between the two spaced from the top of each gutter section whereby the bead or projection rigidifies the gutter system and permits ease of expansion and contraction of the gutter sections relative to the hanger brackets supporting the gutter sections and the mounting plate spaces the rear wall of the gutter sections from the wall to which the gutter sections are secured to ease expansion and contraction of the gutter sections.
Claim 48
Dependent Claim
221 words
A gutter system of expandable and contractable thermoplastics material comprising a plurality of gutter sections for being joined together and a plurality of cantilevered hanger brackets for mounting the sections to a wall, each hanger bracket comprising, a mounting plate for mounting the hanger bracket on a wall, a cantilever member extending therefrom to an end remote the mounting plate, and fastening elements carried by the hanger bracket proximate the mounting plate and the end of the cantilever beam of the hanger bracket remote the mounting plate, the fastening element on the bracket proximate the mounting plate comprising a downwardly opening channel providing a restricted channel mouth portion, each gutter section comprising a bottom and front and rear walls comprising fastening elements for being secured to the fastening elements carried by each hanger bracket, the gutter sections and hanger brackets when secured together further comprises a raised bead or projection between the two spaced from the top of each gutter section whereby the bead or projection rigidifies the gutter system and permits ease of expansion and contraction of the gutter sections relative to the hanger brackets supporting the gutter sections and the mounting plate spaces the rear wall of the gutter sections from the wall to which the gutter sections are secured to ease expansion and contraction of the gutter sections.
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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) | 1989-12-29 | 1990-06-30 | 1990-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-29 | 1994-06-30 | 1994-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-29 | 1998-06-30 | 1998-12-30 | $7700.00 | Window Closed / Lapsed |