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US 7,726,445 B2Granted
Pump-jack scaffold stabilizer
OwnerKevin Livingstone Parnellinventor
Life of this patent
Estimating the term…
Abstract
A stabilizer for bracing a pump-jack scaffold to a roof is provided that includes an arm having a plurality of slots for engaging and disengaging one or more anchor points on a roof and a base or foot coupled to the arm for relative movement with respect to the arm and engagement with a scaffold post and with the roof. The slotted arm permits engagement and disengagement with fasteners in the roof without requiring removal of the fasteners from the roof.
Claims8
A stabilizer for bracing a scaffold pole to a structure the structure having first and second attachment points, the stabilizer comprising:
- a first plate member having a planar configuration and comprising an opening engaging an anchor to slideably engage with and disengage from the first attachment point on the structure;
- and
- a second plate member configured for removable attachment to the scaffold pole, the second plate member having a planar configuration and hingedly attached to the first plate member to form a one-piece stabilizer in which the first plate member and second plate member pivot relative to one another to enable rotation of the second plate member so that a top surface of the second plate member is in a position on top of a top surface of the first plate member to expose a bottom surface of the second plate member, the second plate member having a opening adjacent a first end of the second plate member sized and shaped to be received over the pole, the stabilizer further comprising an attachment plate slideably mounted on the second plate member to engage the second plate member with the pole at a selected angle to the pole, the second plate member further comprising a flange extending from a second end of the second plate member adjacent the hinged attachment of the first plate member, the flange comprising an angle having a first leg fixed to the bottom surface of the second plate member and a flange leg projecting away from the bottom surface of the second plate member, said flange leg having apertures receiving fasteners for attachment to the structure and when the second plate member is in position on top of the first plate member, the flange leg projects away from the second plate member and is sized and shaped to enable hammering on the flange leg to disengage the first plate member from the first attachment point, and the attachment plate has a U-shaped configuration formed of first and second legs that are structured to be positioned on respective sides of the pole.
A scaffold system for use with a building structure having at least first and second attachment points, the system comprising:
- a scaffold having at least one pole for supporting the scaffold;
- and
- a stabilizer for bracing the pole with respect to the structure, the stabilizer comprising:
- a first plate member having a planar configuration and comprising a plurality of openings engaging at least one anchor to slideably engage with and disengage from the first attachment point on the structure;
- and
- a second plate member configured for removable attachment to the scaffold pole, the second plate member having a planar configuration and hingedly attached to the first plate member to form a one-piece stabilizer in which the first plate member and second plate member pivot relative to one another to enable rotation of the second plate member in a position on top of a top surface of the first plate member to expose a bottom surface of the second plate member, the second plate member having a opening adjacent a first end of the second plate member sized and shaped to be received over the pole and an attachment plate slideably mounted on the second plate member to engage the second plate member with the pole at a selected angle to the pole, the second plate member further comprising a flange extending from a second end of the second plate member adjacent the hinged attachment of the first plate member, the flange comprising an angle having a first leg fixed to the bottom surface of the second plate member and a flange leg projecting away from the bottom surface of the second plate member at substantially a right angle, the flange leg having apertures receiving fasteners for attachment to the second attachment point on the structure, and when the second plate member is in position on top of the first plate member the flange leg projects outward and is sized and shaped to enable hammering on the flange leg to disengage the first plate member from the first attachment point on the structure, and the attachment plate has a U-shaped configuration formed of first and second legs that are structured to be positioned on respective sides of the pole.
3 more elements
Dependencies are inferred from the claim text.