IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0080062
(2011-04-05)
|
등록번호 |
US-8596414
(2013-12-03)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
4 |
초록
▼
An improved roof scaffolding system for a steeply pitched roof includes a pair of rails supported on casters and connected by planks supported on plank support brackets mounted along the rails. Each rail includes a ridge hook which reaches over the roof ridge and rests on a caster touching the oppos
An improved roof scaffolding system for a steeply pitched roof includes a pair of rails supported on casters and connected by planks supported on plank support brackets mounted along the rails. Each rail includes a ridge hook which reaches over the roof ridge and rests on a caster touching the opposite side of the roof. When the scaffolding system is to be moved laterally along the roof on which work is to be done, the rails may roll on the casters to the desired location. When the scaffolding system is in place for work to be done, stand assemblies can lower stands which raise the rails off the casters supporting them. Optionally a gable anchor is used to provide a connection point for a rope cable which may be pulled to move the scaffolding system toward the gable end on which the anchor is located.
대표청구항
▼
1. A scaffolding system for use on a pitched roof, the roof having a first side and a second side, the first side and the second side separated by a ridge, the invention comprising at least two elongate spaced apart rail members,each rail member having a longitudinal axis,the at least two rail membe
1. A scaffolding system for use on a pitched roof, the roof having a first side and a second side, the first side and the second side separated by a ridge, the invention comprising at least two elongate spaced apart rail members,each rail member having a longitudinal axis,the at least two rail members generally parallel with each other,each rail member extending along a slope of the first side of the roof,each rail member including a ridge hook at an upper end thereof,each ridge hook extending over the ridge of the roof and overlying a portion of the second side of the roof,each ridge hook including a roof facing side,a caster mounted to the roof facing side of each ridge hook,the caster of each ridge hook supported by the second side of the roof,each caster capable of rolling in a direction substantially perpendicular to the longitudinal axis of the rail member,a plank supporting bracket supported along each rail,a plank spanning the space between the rails and supported by the plank supporting brackets of adjoining rails,the at least two rail members are maintained in spaced apart parallel relationship by at least two cross members,each of the at least two cross members connected to each of the at least two rail members,the plank being retained to each of the plank supporting brackets by end brackets,the end brackets resisting longitudinal movement of the plank relative to the plank supporting brackets,each rail member includes at least one caster underlying and supporting the rail member,the at least one caster of the rail member is capable of rolling in a direction perpendicular to the longitudinal axis of the rail member,the at least one caster of each rail member supporting the rail member above the first side of the roof,each plank supporting bracket is selectively positionable along the rail member on which it is supported,each rail member includes a plurality of spaced apart slotted holes therealong,the slotted holes in a top of the rail member,each plank supporting bracket includes a base member,the base member overlies a section of the rail member,the base member including a pin depending from an underside thereof,the pin selectively receivable in a one of the slotted holes of the rail member,each plank supporting bracket further includes: a plank support arm hinged to the base member of the plank supporting bracket,the plank support arm adjustably supported by a brace hinged to a free end of the plank support arm,the brace having a free end,the free end of the brace having a transverse bar,the base member including plural receiving elements to receive a free end of the brace,the angle between the plank support arm and the rail member variable based on selection of a one of the plural receiving elements by placing of the transverse bar of the free end of the brace in a selected one of the receiving elements of the base member. 2. The scaffolding system of claim 1 wherein the base member includes a pair of spaced apart substantially vertical sidewalls joined by a transverse wall,the substantially vertical sidewalls of the base member disposed alongside opposing longitudinal sides of the rail member when the base member is mounted to the rail member. 3. The scaffolding system of claim 2 wherein the plural receiving elements are a plurality of paired slots formed in top edges of the substantially vertical sidewalls of the base member,the transverse bar receivable in a selected one of the plurality of paired slots. 4. The scaffolding system of claim 1 wherein each plank supporting bracket is selectively positionable along the rail member on which it is supported,each rail member includes a plurality of spaced apart slotted holes therealong,the slotted holes in a top of the rail member,each plank supporting bracket includes a base member,the base member overlies a section of the rail member,the base member including a pin depending from an underside thereof,the pin selectively receivable in a one of the slotted holes of the rail member. 5. A scaffolding system for use on a pitched roof, the roof having a first side and a second side, the first side and the second side separated by a ridge, the invention comprising at least two elongate spaced apart rail members,each rail member having a longitudinal axis,the at least two rail members generally parallel with each other,each rail member extending along a slope of the first side of the roof,each rail member including a ridge hook at an upper end thereof,each ridge hook extending over the ridge of the roof and overlying a portion of the second side of the roof,each ridge hook including a roof facing side,a caster mounted to the roof facing side of each ridge hook,the caster of each ridge hook supported by the second side of the roof,each caster capable of rolling in a direction substantially perpendicular to the longitudinal axis of the rail member,a plank supporting bracket supported along each rail,a plank spanning the space between the rails and supported by the plank supporting brackets of adjoining rails,an anchor member adapted for mounting to a gable end of a building on which the roof is supported,means on one of the rail members to draw the rail members toward the anchor member. 6. The scaffolding system of claim 5the anchor member includes an attachment point,the means on one of the rail members to draw the rail members toward the anchor member comprises a winch mounted along a one of the rails,motive power coupled to the winch to cause it to wind a cable thereon,the cable joining the winch to the attachment point on the anchor member. 7. The scaffolding system of claim 5 wherein the anchor member includes an upright member extending to a height above the first side of the roof,the anchor member including an attachment point,the attachment point being on the upright member. 8. The scaffolding system of claim 5 wherein the means on one of the rail members to draw the rail members toward the anchor member includes a first pulley attached to a first of the at least two rail members,the anchor member including a connection point for attachment of a rope thereto,a second pulley attached to the connection point, anda rope passing about the first and second pulleys,the rope having a first end fastened to the first of the at least two rail members,the rope having an opposing second end free for use of a user to draw the scaffolding system toward the anchor member. 9. The scaffolding system of claim 5 wherein each rail member includes a stand assembly,the stand assembly includes the at least one caster and a stand foot mounted on a jack stand,the jack stand selectively adjustable to cause the stand foot to press against the first side of the roof to selectively elevate the at least one caster of the rail member. 10. The scaffolding system of claim 5 wherein each plank supporting bracket is selectively positionable along the rail member on which it is supported,each rail member includes a plurality of spaced apart slotted holes therealong,the slotted holes in a top of the rail member. 11. A scaffolding system for use on a pitched roof, the roof having a first side and a second side, the first side and the second side separated by a ridge, the invention comprising at least two elongate spaced apart rail members,each rail member having a longitudinal axis,the at least two rail members generally parallel with each other,at least two cross members linking the at least two rail members,the at least two cross members being spaced apart,each cross member substantially parallel to the other cross member,each of the at least two cross members removably attached to the at least two rail members,each of the at least two cross members spaced apart from opposing ends of the at least two rail members,each rail member extending along a slope of the first side of the roof,each rail member including a ridge hook at an upper end thereof,each ridge hook extending over the ridge of the roof and overlying a portion of the second side of the roof,each ridge hook including a roof facing side,a caster mounted to the roof facing side of each ridge hook,the caster of each ridge hook supported by the second side of the roof,each caster capable of rolling in a direction substantially perpendicular to the longitudinal axis of the rail membera plank supporting bracket supported along each rail,a plank spanning the space between the rails and supported by the plank supporting brackets of adjoining rails,the plank being retained to each plank supporting bracket so that the plank may not move longitudinally relative to the plank supporting brackets,each of the at least two rail members being selectively immovable laterally along the first side of the pitched roof,each rail member includes at least one stand assembly,the stand assembly including at least one caster and a stand foot mounted on a jack stand,the caster underlying and selectively supporting the rail member,the at least one caster of each rail member supporting the rail member above the first side of the pitched roof,the jack stand selectively adjustable to cause the stand foot to press against the first side of the roof to elevate the at least one caster of the rail member,the at least one caster of the rail member is capable of rolling in a direction perpendicular to the longitudinal axis of the rail member,the stand assembly further comprising a bracket member,the at least one caster of the rail member is mounted to the bracket member,the bracket member detachably mounted to the rail member,the bracket member including a plate from which the at least one caster depends,the bracket member further including an open topped channel into which the rail member is removably received,the plate disposed alongside the rail member to which the bracket member is detachably mounted. 12. The scaffolding system of claim 11 wherein the open topped channel is selectively mounted to the rail member by at least one removable cross pin,the stand foot comprising a foot plate at a lower end of the threaded rod,the jack stand including a sleeve through which the threaded rod is received,the sleeve mounted to a substantially vertical sidewall of the open topped channel. 13. A scaffolding system for use on a pitched roof, the roof having a first side and a second side, the first side and the second side separated by a ridge, the invention comprising at least two elongate spaced apart rail members,each rail member having a longitudinal axis,the at least two rail members generally parallel with each other,at least two cross members linking the at least two rail members,the at least two cross members being spaced apart,each cross member substantially parallel to the other cross member,each of the at least two cross members removably attached to the at least two rail members,each of the at least two cross members spaced apart from opposing ends of the at least two rail members,each rail member extending along a slope of the first side of the roof,each rail member including a ridge hook at an upper end thereof,each ridge hook extending over the ridge of the roof and overlying a portion of the second side of the roof,each ridge hook including a roof facing side,a caster mounted to the roof facing side of each ridge hook,the caster of each ridge hook supported by the second side of the roof,each caster capable of rolling in a direction substantially perpendicular to the longitudinal axis of the rail membera plank supporting bracket supported along each rail,a plank spanning the space between the rails and supported by the plank supporting brackets of adjoining rails,the plank being retained to each plank supporting bracket so that the plank may not move longitudinally relative to the plank supporting brackets,each of the at least two rail members being selectively immovable laterally along the first side of the pitched roof,each plank supporting bracket is selectively positionable along the rail member on which it is supported,each rail member includes a plurality of spaced apart slotted holes therealong,the slotted holes in a top of the rail member,each plank supporting bracket includes a base member,the base member overlies a section of the rail member,the base member comprising an upper channel and a lower channel,the lower channel including sidewalls depending from a transverse wall thereof,the sidewalls disposed alongside opposing sides of the rail member,the base member including a pin depending from an underside thereof,the pin selectively receivable in a one of the slotted holes of the rail member,each plank supporting bracket further includes:a plank support arm hinged to the base member of the plank supporting bracket,the plank support arm adjustably supported by a brace hinged to a free end of the plank support arm,the brace having a free end,the base member including plural receiving elements to receive a free end of the brace,the angle between the plank support arm and the rail member variable based on selection of a one of the plural receiving elements by placing of the free end of the brace in a selected one of the receiving elements of the base member,the free end of the brace having a transverse bar,each of the plural receiving elements being a pair of open topped slots along the base member,the transverse bar receivable in a one of the pairs of the plural open-topped slots of the base member,each of the rail members including an upper rail and a lower rail,the upper rail having a joiner secured thereto,the joiner accepting an upper end of the lower rail,a pin selectively attaching the upper end of the lower rail to the joiner by passing through a hole on the joiner aligned with a hole on the upper end of the lower rail.
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