Extended safety cage for retractable gangway
Patent 8015647 Issued on September 13, 2011. Estimated Expiration Date: 
October 6, 2029. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 6, 2029. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 298212 2362170 3641604 Ship's embarkation device Mobile tank vehicle access system Bulk material load vehicle access system Work station with mobile elevatable work platform Bulk material load vehicle access system Modular bulk material handling station Mobile lift unit InventorAssigneeApplicationNo. 12574241 filed on 10/06/2009US Classes:14/37Hinged sectionsExaminersPrimary: Addie, RaymondAttorney, Agent or FirmInternational ClassE04G 1/22AbstractAn extended safety cage provides access to a plurality of hatches on the top of a mobile container. The cage is rotatably attached to the end of a gangway, which extends from and is rotatably attached to a platform. The platform carries a pair of braces that extend out in opposite directions and support the cage through spring-loaded lifting arms. The apparatus can include actuators, such as hydraulic or pneumatic actuators, that urge the gangway and cage downward when activated. Secondary braces ensure that the lifting arms and safety cage move in unison. | |
