Abstract

A fall protection apparatus includes a heavy support base with a pivotal mast having a top member for rotation around the axis of the mast carrying a series of booms pivotal about respective vertical axes, each having an end coupling member for receiving a fall restraint harness. Each boom is formed by a tube which fractures on a fall and an elongate stainless steel strap inside the tube which bends without fracturing. The mast includes a series of telescopic rectangular mast sections with a winch driven cable and pulley arrangement for extending the first section which acts to pull the second inner section to the extended position as the first inner section moves out of the outer section. Each section includes first and second pulleys mounted at the same face of the section with the cable located between the face of the section and the face of the next section.

IPC Classes  ?

• A62B 35/00 - Safety belts or body harnessesSimilar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
• F16M 11/42 - Stands or trestles as supports for apparatus or articles placed thereon with arrangement for propelling the support
• E04H 12/18 - TowersMasts or polesChimney stacksWater-towersMethods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic

Abstract

A fall protection apparatus includes a heavy support base with a pivotal mast having a top member for rotation around the axis of the mast carrying a series of booms pivotal about respective vertical axes, each having an end coupling member for receiving a fall restraint harness. Each boom is formed by a tube which fractures on a fall and an elongate stainless steel strap inside the tube which bends without fracturing. The mast includes a series of telescopic rectangular mast sections with a winch driven cable and pulley arrangement for extending the first section which acts to pull the second inner section to the extended position as the first inner section moves out of the outer section. Each section includes first and second pulleys mounted at the same face of the section with the cable located between the face of the section and the face of the next section.

IPC Classes  ?

• F16M 11/42 - Stands or trestles as supports for apparatus or articles placed thereon with arrangement for propelling the support
• A62B 35/00 - Safety belts or body harnessesSimilar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
• E04G 21/32 - Safety or protective measures for persons during the construction of buildings
• F16M 11/18 - Heads with mechanism for moving the apparatus relatively to the stand
• F16M 11/20 - Undercarriages with or without wheels
• F16M 11/28 - Undercarriages for supports with one single telescoping pillar
• E04H 12/18 - TowersMasts or polesChimney stacksWater-towersMethods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic
• E04H 12/34 - Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like

Abstract

A fall protection apparatus includes a heavy support base with a pivotal mast having a top member for rotation around the axis of the mast carrying a series of booms pivotal about respective vertical axes, each having an end coupling member for receiving a fall restraint harness. Each boom is formed by a tube which fractures on a fall and an elongate stainless steel strap inside the tube which bends without fracturing. The mast includes a series of telescopic rectangular mast sections with a winch driven cable and pulley arrangement for extending the first section which acts to pull the second inner section to the extended position as the first inner section moves out of the outer section. Each section includes first and second pulleys mounted at the same face of the section with the cable located between the face of the section and the face of the next section.

IPC Classes  ?

• E04G 21/32 - Safety or protective measures for persons during the construction of buildings
• A62B 35/00 - Safety belts or body harnessesSimilar equipment for limiting displacement of the human body, especially in case of sudden changes of motion

Abstract

A method is provided for supporting an upstanding mast and particularly a davit with a jib where the jib includes a load connecting point arranged such that on application of a load beyond a predetermined limit the spacing of the load connecting point from the mast is reduced to reduce a side load on the base. The method comprises providing a base which includes bottom and side panels connected edge to edge to form a container. The hollow interior is filled by concrete through an opening in one of side panels so that the set solid material substantially fills the hollow interior up to the top and bottom panels and surrounds the sleeve so that the set concrete is in intimate contact with an outer surface of the sleeve and at least part of the inside surfaces of the top and bottom panels. The sleeve which is welded to reinforcing bars passing through the material receives and supports the mast and is held in place by forces contributed both by the set filling material and the panels.

IPC Classes  ?

• E04H 12/22 - Sockets or holders for poles or posts
• A62B 35/00 - Safety belts or body harnessesSimilar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
• F41J 1/10 - Target standsTarget holders
• G09F 1/00 - Cardboard or like show-cards of foldable or flexible material
• E01F 9/012 - free-standing, e.g. traffic cones, foldable or inflatable devices
• F16B 5/00 - Joining sheets or plates to one another or to strips or bars parallel to them

Abstract

A latching device for insertion into a tube provides two large flat buttons one on each side to lock the tube relative to an outer tube or to two parallel plates. A tubular housing with open ends slides into the tube between the side walls of the tube with the ends of the housing substantially butting inside surfaces of the side walls. The buttons are mounted on respective slide members mounted in the housing spring biased apart so that the buttons can be depressed. One or two set screws acting as stop members can be inserted after the housing is moved to the required location in the tube to prevent depression of the buttons to a position inward of the inner surface of the tube so that the housing is held in place.

IPC Classes  ?

• F16B 7/14 - Telescoping systems locking in intermediate positions
• F16B 7/10 - Telescoping systems

Abstract

A latching device for insertion into a tube provides two large flat buttons one on each side to lock the tube relative to an outer tube or to two parallel plates. A tubular housing with open ends slides into the tube between the side walls of the tube with the ends of the housing substantially butting inside surfaces of the side walls. The buttons are mounted on respective slide members mounted in the housing spring biased apart so that the buttons can be depressed. One or two set screws acting as stop members can be inserted after the housing is moved to the required location in the tube to prevent depression of the buttons to a position inward of the inner surface of the tube so that the housing is held in place.

IPC Classes  ?

• F16B 7/10 - Telescoping systems

Abstract

A latching device for insertion into a tube provides two large flat buttons one on each side to lock the tube relative to an outer tube or to two parallel plates. A tubular housing with open ends slides into the tube between the side walls of the tube with the ends of the housing substantially butting inside surfaces of the side walls. The buttons are mounted on respective slide members mounted in the housing spring biased apart so that the buttons can be depressed. One or two set screws acting as stop members can be inserted after the housing is moved to the required location in the tube to prevent depression of the buttons to a position inward of the inner surface of the tube so that the housing is held in place.

IPC Classes  ?

• F16B 7/14 - Telescoping systems locking in intermediate positions
• F16B 7/10 - Telescoping systems

Abstract

A fall protection apparatus includes a heavy support base with a pivotal
mast having a top member for rotation around the axis of the mast carrying a
series
of booms pivotal about respective vertical axes, each having an end coupling
member for receiving a fall restraint harness. Each boom is formed by a tube
which
fractures on a fall and an elongate stainless steel strap inside the tube
which bends
without fracturing. The mast includes a series of telescopic rectangular mast
sections with a winch driven cable and pulley arrangement for extending the
first
section which acts to pull the second inner section to the extended position
as the
first inner section moves out of the outer section. Each section includes
first and
second pulleys mounted at the same face of the section with the cable located
between the face of the section and the face of the next section.

IPC Classes  ?

• A62B 35/00 - Safety belts or body harnessesSimilar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
• B66C 15/00 - Safety gear
• B66C 23/88 - Safety gear

Abstract

A fall protection apparatus includes a heavy support base with a pivotal mast having a top member for rotation around the axis of the mast carrying a series of booms pivotal about respective vertical axes, each having an end coupling member for receiving a fall restraint harness. Each boom is formed by a tube which fractures on a fall and an elongate stainless steel strap inside the tube which bends without fracturing. The mast includes a series of telescopic rectangular mast sections with a winch driven cable and pulley arrangement for extending the first section which acts to pull the second inner section to the extended position as the first inner section moves out of the outer section. Each section includes first and second pulleys mounted at the same face of the section with the cable located between the face of the section and the face of the next section.

IPC Classes  ?

• A62B 35/00 - Safety belts or body harnessesSimilar equipment for limiting displacement of the human body, especially in case of sudden changes of motion

Abstract

A latching device for insertion into a tube provides two large flat
buttons one on each side to lock the tube relative to an outer tube or to two
parallel
plates. A tubular housing with open ends slides into the tube between the side
walls
of the tube with the ends of the housing substantially butting inside surfaces
of the
side walls. The buttons are mounted on respective slide members mounted in the

housing spring biased apart so that the buttons can be depressed. One or two
set
screws acting as stop members can be inserted after the housing is moved to
the
required location in the tube to prevent depression of the buttons to a
position inward
of the inner surface of the tube so that the housing is held in place.

IPC Classes  ?

• F16B 7/10 - Telescoping systems
• F16B 7/12 - Telescoping systems locking only in extreme extended position
• F16B 7/14 - Telescoping systems locking in intermediate positions