초록 ▼

An improved portable safety guardrail system which utilizes cast iron bases or welded bases and tubular guardrail sections and gates. The system is designed to meet and exceed OSHA Fall Protection Regulations while having the appeal of being modular and portable with no need for anchoring devices (i

An improved portable safety guardrail system which utilizes cast iron bases or welded bases and tubular guardrail sections and gates. The system is designed to meet and exceed OSHA Fall Protection Regulations while having the appeal of being modular and portable with no need for anchoring devices (i.e., anchor bolts, etc.). This invention allows for infinite configuration of a guardrail system to suit the needs of the user.

대표청구항 ▼

An improved portable safety guardrail system which utilizes cast iron bases or welded bases and tubular guardrail sections and gates. The system is designed to meet and exceed OSHA Fall Protection Regulations while having the appeal of being modular and portable with no need for anchoring devices (i

An improved portable safety guardrail system which utilizes cast iron bases or welded bases and tubular guardrail sections and gates. The system is designed to meet and exceed OSHA Fall Protection Regulations while having the appeal of being modular and portable with no need for anchoring devices (i.e., anchor bolts, etc.). This invention allows for infinite configuration of a guardrail system to suit the needs of the user. y at right angles to the support surface, the hoist comprising: a base member for mounting on the support surface; a jib portion; the jib portion having a bottom coupling at a bottom end for attachment to an attachment portion of the base member such that the jib portion is supported thereby; and a winch mounting for receiving thereon a winch for paying out and drawing in a cable; the jib portion having a cable guide member at an upper end over which the cable can pass to be guided from the winch over the cable guide member downwardly from the upper end of the jib portion for attachment to a load to be lifted; the jib portion being shaped such that the upper end is located upwardly from and forwardly of the bottom coupling such that, with the bottom coupling located by the base member on the support structure behind a load to be lifted, the upper end is located above the load to be lifted; the jib portion being formed by a tubular body of constant cross-section extending substantially from the bottom end to the upper end which tubular body is long substantially its full length from the bottom end at the bottom coupling to the upper end at the cable guide member smoothly curved with a constant radius of curvature; wherein the base member includes two horizontal legs each extending outwardly from the attachment portion and defining therebetween a generally V-shape; and wherein each of the legs is formed by a tubular leg body of constant cross-section extending substantially from an inner end at the attachment portion to an outer end which tubular leg body is along substantially its full length from the attachment portion to an outer end of the tubular leg body smoothly curved with a constant radius of curvature. 6. The hoist according to claim 5 wherein each tubular leg body is formed in two pieces where one piece has an end slidable into an end of the other so as to adjust a length of the body, with each piece being curved to the same radius of curvature. 7. The hoist according to claim 5 wherein each tubular leg body has end portions at the inner end and the outer end which are straight. 8. The hoist according to claim 7 wherein the inner end of each leg portion is engaged onto a respective one of two straight stub members of the attachment portion. 9. The hoist according to claim 7 wherein the straight outer end is engaged onto a ground engaging element for supporting the base member. 10. The hoist according to claim 9 wherein the ground engaging element comprises a pivotal foot. 11. The hoist according to claim 9 wherein the ground engaging element comprises a wheel. 12. The hoist according to claim 5 wherein the tubular body has end portions at the bottom end and the upper end which are straight and wherein the length of the straight portions is less than 10 inches. 13. The hoist according to claim 5 wherein the tubular body forming the jib portion is formed in two pieces where one piece has an end slidable into an end of the other so as to adjust a length of the body, with each piece being smoothly curved to the same radius of curvature. 14. A hoist for mounting on a support surface for lifting a load in a direction generally at right angles to the support surface, the hoist comprising: a base member for mounting on the support surface; a jib portion; the jib portion having a bottom coupling at a bottom end for attachment to an attachment portion of the base member such that the jib portion is supported thereby; and a winch mounting for receiving thereon a winch for paying out and drawing in a cable; the jib portion having a cable guide member at an upper end over which the cable can pass to be guided from the winch over the cable guide member downwardly from the upper end of the jib portion for attachment to a load to be lifted; the jib portion being shaped such that the upper end is located upwardly from and forwardly of the bottom coupling such that, with the bottom coupling located by the base memb