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US 7,779,599 B2Granted
Articulating work platform support system, work platform system, and methods of use thereof
AssigneeSafway Services, LLC
InventorsPaul Jolicoeur, Roy Scrafford, Clifford Westrick, Dave Gordon, Tom Silic, Edward Tifft, Mathieu Grumberg
Life of this patent
Estimating the term…
Abstract
The invention includes a work platform and support system that includes a hub and joist configuration, wherein the hubs and joists are capable of articulation, or pivoting. One method of installation allows for sections of new work platform system to be extended from an existing suspended work platform system. The system is also capable of supporting, without failure, its own weight and at least four times the maximum intended load applied to it.
Claims48
A work platform support system comprising:
- a plurality of joists;
- and
- a plurality of hubs;
- wherein the plurality of joists comprises four joists and wherein the plurality of hubs comprises four hubs;
- wherein the joists and hubs are configured to be interconnected so that:
- i) one of the joists and two of the hubs are to remain stationary;
- ii) two of the joists are rotatable;
- and iii) two of the hubs and one of the joists are translatable;
- wherein the joists and hubs are to be interconnected so that the two rotatable joists, the two translatable hubs, and the one translatable joist can articulate from an initial position to a final position with respect to the stationary joist and the stationary hubs;
- wherein the plurality of joists are substantially co-planar with respect to each other in the initial and the final position;
- wherein at least one of the joists is to be connected with at least one of the hubs using a pin to provide free rotation of the at least one joist with respect to the at least one hub about the pin;
- and
- wherein the free rotation is restricted by at least one of:
- i) an additional pin that is to be located proximate a perimeter of the at least one hub;
- and ii) at least a portion of a work platform when the platform is positioned with respect to the hubs and the joists in the final position.
12 more elements
A work platform support system comprising:
- at least four hubs;
- and
- at least four joists, each of the four joists are configured to be interconnected with at least two of the four hubs;
- wherein the joists and the hubs are configured to be interconnected so that:
- i) one of the joists—and two of the hubs—are configured to remain stationary;
- ii) two of the joists—are rotatable;
- and iii) two of the hubs—and one of the joists—are translatable;
- wherein, when interconnected, the two rotatable joists, the two translatable hubs, and the one translatable joist can articulate from an initial position to a final position with respect to the stationary joist and the stationary hubs;
- wherein the at least four joists—are substantially co-planar with respect to each other in the initial and the final positions;
- wherein at least one of the joists is configured to be connected with at least one of the hubs using a pin to provide free rotation of the at least one joist with respect to the at least one hub about the pin;
- and
- wherein the free rotation is restricted by at least one of:
- i) an additional pin that is to be located proximate a perimeter of the at least one hub;
- and ii) at least a portion of a work platform when the platform is positioned with respect to the hubs and the joists in the final position.
11 more elements
A work platform support system for suspending a work platform from a structure, said system comprising:
- a plurality of joists;
- at least one of a plurality of hubs for interconnecting at least two of said plurality of joists;
- and
- a suspension connector for suspending at least one of the plurality of joists and at least one of the plurality of hubs from a structure;
- wherein the plurality of joists comprises four joists and wherein the plurality of hubs comprises four hubs;
- wherein the joists and hubs are configured to be interconnected so that:
- i) one of the joists and two of the hubs are to remain stationary;
- ii) two of the joists are rotatable;
- and iii) two of the hubs and one of the joists are translatable;
- wherein, when interconnected, the two rotatable joists, the two translatable hubs, and the one translatable joist can articulate from an initial position to a final position with respect to the stationary joist and the stationary hubs;
- wherein the plurality of joists are substantially coplanar with respect to each other in the initial and the final positions;
- and
- wherein at least one of the joists is configured to be connected with at least one of the hubs using a pin to provide free rotation of the at least one joist with respect to the at least one hub about the pin;
- and
- wherein the free rotation is restricted by at least one of:
- i) an additional pin that is to be located proximate a perimeter of the at least one hub;
- and ii) at least a portion of a work platform when the platform is positioned with respect to the hubs and the joists in the final position.
14 more elements
A work platform support structure comprising:
- a first hub connectable in fixed relation to a second hub using a first joist;
- and
- a third hub connectable to a fourth hub using a second joist, the third and the fourth hubs further connectable to the first and the second hubs using third and fourth joists;
- wherein, when connected, the second, the third and the fourth joists, and the third and the fourth hubs articulate from an initial position to an extended position with respect to the first and second hubs and the first joist;
- wherein, when connected, each of the first, second, third and the fourth joists extends substantially perpendicularly with respect to an axis of at least one of the respective first, second, third and fourth hubs about which the respective joists rotate;
- wherein the first, second, third and the fourth joists are substantially co-planar with respect to each other in the initial and the extended positions;
- wherein at least one of the joists is to be connected with at least one of the hubs using a pin to provide free rotation of the at least one joist with respect to the at least one hub about the pin;
- and
- wherein the free rotation is restricted by at least one of:
- i) an additional pin that is configured to be located proximate a perimeter of the at least one hub;
- and ii) at least a portion of a work platform when the platform is positioned with respect to the hubs and the joists in the extended position.
8 more elements
A work platform support structure comprising:
- a first pair of hubs connectable in fixed relation to each other using a first joist;
- and
- a second pair of hubs connectable to each other using a second joist, the second pair of hubs further connectable to the first pair of hubs using third and fourth joists;
- wherein, when connected, the second, the third and the fourth joists and the second pair of hubs articulate from an initial position to a final position with respect to the first pair of hubs and the first joist;
- wherein, when connected, each of the first, second, third and the fourth joists extends substantially perpendicularly with respect to an axis of at least one of the respective hubs in the first and the second pair of hubs about which the respective joists rotate;
- and
- wherein the first, second, third and the fourth joists are substantially co-planar with respect to each other in the initial and the final positions;
- wherein at least one of the joists is configured to be connected with at least one of the hubs using a pin to provide free rotation of the at least one joist with respect to the at least one hub about the pin;
- and
- wherein the free rotation is restricted by at least one of:
- i) an additional pin that is to be located proximate a perimeter of the at least one hub;
- and ii) at least a portion of a work platform when the platform is positioned with respect to the hubs and the joists in the final position.
9 more elements
A work platform structure comprising:
- a first hub and joist assembly comprising pair of hubs connectable in fixed relation to each other using a first joist;
- a second hub and joist assembly comprising a pair of hubs connectable to each other using a second joist, the pair of hubs further connectable to third and fourth joists;
- wherein, when connected, the second hub and joist assembly articulates with respect to the first hub and joist assembly;
- wherein, when connected, each of the joists in the first and the second hub and joist assemblies extends substantially perpendicularly with respect to an axis of at least one of the respective first, second, third and fourth hubs about which the respective joists rotate;
- wherein, when connected, each of the joists in the first and the second hub and joist assemblies is substantially co-planar with respect to each other in an initial position and an extended position;
- and
- wherein at least one of the joists is configured to be connected with at least one of the hubs using a pin to provide free rotation of the at least one joist with respect to the at least one hub about the pin;
- and
- wherein the free rotation is restricted by at least one of:
- i) an additional pin that is to be located proximate a perimeter of the at least one hub;
- and ii) at least a portion of a work platform when the platform is positioned with respect to the hubs and the joists in the extended position.
8 more elements
A work platform support structure comprising:
- a first joist having fixed first and second hubs connectable thereto;
- a rotatable second joist connectable to either the first or the second hub,
- a rotatable third joist connectable to the other of the first or the second hub;
- a third hub connectable to either the rotatable second joist or the rotatable third joist and a fourth hub connectable to the other of the second or the third joist;
- and
- a fourth joist connectable to the third and the fourth hubs;
- wherein, when connected, the second, third and fourth joists and the third and fourth hubs together articulate with respect to the stationary first joist and fixed first and second hubs from an initial position to a final position in which a work platform can be received and supported;
- wherein at least one of the joists is to be connected with at least one of the hubs using a pin to provide free rotation of the at least one joist with respect to the at least one hub about the pin;
- wherein the free rotation is restricted by at least one of:
- i) an additional pin that is to be located proximate a perimeter of the at least one hub;
- and ii) at least a portion of a work platform when the platform is positioned with respect to the hubs and the joists in the final position;
- wherein each of the first, second, third and the fourth hubs comprises a first surface with a first set of openings;
- a second surface substantially parallel to said first surface and having a second set of openings;
- and a structural element connected between the first surface and the second surface, such that each one of the openings in the first set of openings is co-axial with a respective one of the openings in the second set of openings;
- and
- wherein the first, second, third and the fourth joists are substantially co-planar with respect to each other in both the initial and the final positions.
13 more elements
A work platform support structure comprising:
- a first hub and joist assembly comprising a first joist and a pair of hubs connectable to the first joist;
- and
- a second hub and joist assembly comprising a rotatable second joist, a rotatable third joist and a translatable fourth joist, the second, third and fourth joists connectable together using a pair of hubs;
- wherein at least two of the three joists of the second hub and joist assembly are connectable to the hubs of the first hub and joist assembly;
- wherein, when connected, the second hub and joist assembly articulates with respect to the first hub and joist assembly in order to receive and support a work platform;
- wherein each of the hubs in the first and the second hub and joist assemblies comprises a first surface with a first set of openings;
- a second surface substantially parallel to said first surface and having a second set of openings;
- and a structural element connected between the first surface and the second surface, such that each one of the openings in the first set of openings is co-axial with a respective one of the openings in the second set of openings;
- wherein, when connected, each of the joists in the first and the second hub and joist assemblies is substantially co-planar with respect to each other in a first initial position and a second extended position;
- wherein at least one of the joists is configured to be connected with at least one of the hubs using a pin to provide free rotation of the at least one joist with respect to the at least one hub about the pin;
- and
- wherein the free rotation is restricted by at least one of:
- i) an additional pin that is to be located proximate a perimeter of the at least one hub;
- and ii) at least a portion of a work platform when the platform is positioned with respect to the hubs and the joists in the extended position.
11 more elements
A work platform assembly comprising:
- first, second, third and fourth hubs, each of the hubs comprising a first surface with a first set of openings;
- a second surface substantially parallel to said first surface and having a second set of openings, such that each one of the openings in the first set of openings is co-axial with a respective one of the openings in the second set of openings;
- and a structural element connected between the first surface and the second surface such that a longitudinal axis of the structural element is at least substantially normal to the planes of the first and the second surfaces;
- first, second, third and fourth joists adapted for operable association with the first, second, third and fourth hubs, such that, when so associated, each of the first, second, third and the fourth joists extends substantially perpendicularly with respect to an axis of at least one of the respective first, second, third and the fourth hubs about which the respective joists can rotate;
- a work platform that is adapted to be positioned upon at least one of the first, second, third and the fourth joists, at least one of the first, second, third and the fourth hubs, or a combination thereof, when the hubs and joists are operably associated, to form a work platform system;
- wherein, when operably associated, (i) the first hub is connected in fixed relation to the second hub using the first joist;
- (ii) the third hub is connected to the fourth hub using the second joist—and (iii) the third and the fourth joists are connected to the first and the third, and the second and the fourth hubs respectively;
- wherein, when operably associated, at least one of the second, third and the fourth joists, and at least one of the third and the fourth hubs articulate from an initial position to a final position by at least one of translating, rotating and pivoting with respect to the first and the second hubs and the first joist to obtain a closed-loop structure such that the first and the third joists are parallel or substantially parallel to the second and the fourth joists respectively in the final position upon articulation;
- wherein each of the first, second, third and fourth joists is substantially co-planar in the initial and the final positions;
- wherein at least one of the joists is configured to be connected with at least one of the hubs using a pin to provide free rotation of the at least one joist with respect to the at least one hub about the pin;
- and
- wherein the free rotation is restricted by at least one of:
- i) an additional pin that is to be located proximate a perimeter of the at least one hub;
- and ii) at least a portion of a work platform when the platform is positioned with respect to the hubs and the joists in the final position.
11 more elements
A work platform support structure comprising:
- a first hub connectable in fixed relation to a second hub using a first joist;
- a third hub connectable to a fourth hub using a second joist, the third and the fourth hubs further connectable to the first and the second hubs using third and fourth joists;
- wherein, when connected, the second, the third and the fourth joists, and the third and the fourth hubs articulate with respect to the first and second hubs and the first joist to an extended or final position;
- wherein at least one of the joists is connectable with at least one of the hubs using a pin to provide free rotation of the at least one joist with respect to the at least one hub about the pin;
- and
- wherein the free rotation is restricted by at least one of:
- i) an additional pin that is to be located proximate a perimeter of the at least one hub;
- and ii) at least a portion of a work platform when the platform is positioned with respect to the hubs and the joists in the extended or final position.
5 more elements
Dependencies are inferred from the claim text.