摘要:
An edifice such as a sports stadium is adapted for open use during good weather as well as for covered use during poor weather by having at least one movable roof member. Each movable roof member includes a transport mechanism that is constructed and arranged to permit the roof member to move in a predetermined path with respect to the underlying structure of the edifice. The transport mechanism includes structure for supporting both ends of the roof member, which bridges an otherwise open area of the edifice. In order to permit some flexure and movement of the roof member with respect to the underlying edifice, as will inevitably occur as a result of natural forces such as winds, orientation structure is provided for maintaining the transport mechanism in a predetermined orientation while simultaneously permitting a limited amount of movement of the roof member in a direction that is nonparallel to the predetermined path of movement. The orientation structure has been found to be most effective when it is provided at but one end of the roof member.
摘要:
A stadium that is adapted for open use during good weather as well as for covered use during poor weather includes a foundation and a pair of movable end roof members that are movable between first, retracted positions and second, operational positions for covering first and second end areas, respectively, of the stadium. The stadium also includes a center roof member that is movable between a retracted position and an operational position for covering a center area of the stadium. All of the roof members are supported for movement between the retracted positions and the operational positions by a guide and support assembly that includes at least one rail member that is secured to the foundation and a plurality of independently suspended follower assemblies that are mounted to the respective roof member. Each of said follower assemblies include a wheel member that is positioned in contact with the rail and a resilient member that is interposed between the wheel member and the roof member, so that each of the wheel members is independently suspended with respect to the other wheel members. This creates a number of advantages, including that it makes alignment easier to achieve and maintain, and that it allows the guide and support assembly to be constructed with a large number of small wheels and to have a relatively low profile, which makes the system attractive from both an aesthetic and a structural standpoint.
摘要:
A stadium that is adapted for open use during good weather as well as for covered use during poor weather includes a foundation and a pair of movable end roof members that are movable between first, retracted positions and second, operational positions for covering first and second end areas, respectively, of the stadium. The stadium also includes a center roof member that is movable between a retracted position and an operational position for covering a center area of the stadium. All of the roof members are supported for movement between the retracted positions and the operational positions by a guide and support assembly that includes at least one rail member that is secured to the foundation and a plurality of independently suspended follower assemblies that are mounted to the respective roof member. Each of said follower assemblies include a wheel member that is positioned in contact with the rail and a resilient member that is interposed between the wheel member and the roof member, so that each of the wheel members is independently suspended with respect to the other wheel members. This creates a number of advantages, including that it makes alignment easier to achieve and maintain, and that it allows the guide and support assembly to be constructed with a large number of small wheels and to have a relatively low profile, which makes the system attractive from both an aesthetic and a structural standpoint.
摘要:
A convertible stadium includes a playing field, a seating area, a stationary roof structure and a large, heavy roof panel mounted for movement with respect to the stationary roof structure, A plurality of cable drums are mounted for movement together with the roof panel. Each cable drum has at least one cable wound thereabout. The cable is secured to the stationary roof structure and is payable from the respective cable drum. The system is designed so as to minimize movement between the cable and the roof panel, so there will be no possibility of frictional engagement therebetween.
摘要:
A movable roof member includes a transport mechanism that is constructed and arranged to permit the roof member to move in a predetermined path with respect to the underlying structure of the supporting edifice. The transport mechanism includes structure for supporting both ends of the roof member, which bridges an otherwise open area of the edifice. In order to permit some flexure and movement of the roof member with respect to the underlying edifice, as will inevitably occur as a result of natural forces such as winds, a lateral release system is provided for maintaining the transport mechanism in a predetermined orientation while simultaneously permitting a limited amount of movement of the roof member in a direction that is nonparallel to the predetermined path of movement. The lateral release system has been found to be most effective when it is provided at but one end of the roof member. The lateral release system preferably includes a linear slide bearing that in the preferred embodiment has a longitudinal axis that is oriented so as to be substantially perpendicular to the predetermined path of travel of the roof member.
摘要:
A movable roof member includes a transport mechanism that is constructed and arranged to permit the roof member to move in a predetermined path with respect to the underlying structure of the supporting edifice. The transport mechanism includes structure for supporting both ends of the roof member, which bridges an otherwise open area of the edifice. In order to permit some flexure and movement of the roof member with respect to the underlying edifice, as will inevitably occur as a result of natural forces such as winds, a lateral release system is provided for maintaining the transport mechanism in a predetermined orientation while simultaneously permitting a limited amount of movement of the roof member in a direction that is nonparallel to the predetermined path of movement. The lateral release system has been found to be most effective when it is provided at but one end of the roof member. The lateral release system preferably includes a linear slide bearing that in the preferred embodiment has a longitudinal axis that is oriented so as to be substantially perpendicular to the predetermined path of travel of the roof member.
摘要:
Embodiments of the present invention function to modify the cation concentration of carrageenans using an ion-exchange process. Processes for modifying the cation concentrations of solid carrageenans are provided. The processes include treating solid carrageenan with an aqueous treatment solution comprising an alcohol and a salt and washing the corresponding treated solid carrageenan with an aqueous solution comprising an alcohol.
摘要:
A convertible stadium includes a playing field, a seating area, a stationary roof structure and a large, heavy roof panel mounted for movement with respect to the stationary roof structure, A plurality of cable drums are mounted for movement together with the roof panel. Each cable drum has at least one cable wound thereabout. The cable is secured to the stationary roof structure and is payable from the respective cable drum. The system is designed so as to minimize movement between the cable and the roof panel, so there will be no possibility of frictional engagement therebetween.