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...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.

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Class 212/316 - Having plural trolleys


Subclass of Class 212 - Traversing hoists
Definition: Subject matter wherein two trolleys* are provided
No. of applications: 3
Last issue date: 08/11/2011


Application No.Application TitleIssue Date
20110192816Powered Auxiliary Hoist Mechanism for a Gantry Crane
A gantry crane (10) is configured in a panel turner application. The gantry crane (10) generally includes a gantry crane structure (14) having a first cross-beam (28) and a second cross-beam (30). A first main hoist mechanism (40
08/11/2011
20110147330INDEPENDENTLY POWERED TROLLEYS
A trolley control system for a gantry crane having a multiple trolley arrangement such as a first and second trolley. The control system including a trolley beam connected to the gantry crane with a first and second drive device connected to the trolley beam. The first ...
06/23/2011
20080264889Dual trolley, single boom crane system
A dual trolley, single boom crane system for loading and unloading containers from ships moored at a dock that effectively doubles the rate of container loading and unloading of conventional prior art single boom crane systems. The present invention also concerns a nove...
10/30/2008
 
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