Traversing Hoists Patents (Class 212)
- Senses crane tilt (e.g., outrigger sensors) (Class 212/277)
- Means determining overloading produced by load (e.g., strain gauges) (Class 212/278)
- Sensor regulates counterweight or counterbalancing means (Class 212/279)
- Boom movement stops responsive to overtravel or proximity to powerline (Class 212/280)
- Hoisting stops upon load being raised to a predetermined position (e.g., anti-two blocking) (Class 212/281)
- Movable along nonvertical rectilinear path (Class 212/200)
- Length of hoisting cable between boom and load decreases automatically as boom is raised (Class 212/201)
- Vertically spaced fastening means along boom support (Class 212/202)
- Fluid actuated (Class 212/203)
- By mounting on vertically extensible support (Class 212/204)
- Flexible (Class 212/313)
- Having vertically adjustable track (Class 212/314)
- Supporting second traveling bridge (Class 212/315)
- Having plural trolleys (Class 212/316)
- Having vertically or horizontally swinging boom on bridge or trolley (Class 212/317)
- Having horizontally swingable track- or load-rotating means on trolley (Class 212/318)
- Having load engager mounted for guided vertical movement beneath trolley (Class 212/319)
- Motor fixed to bridge-supporting structure (Class 212/320)
- Trolley mounted motor for trolley traversal via cable means (Class 212/321)
- Bridge mounted motor for trolley traversal via cable means (Class 212/322)
- Bridge mounted motor for load lifting (Class 212/323)
- Having vertical supporting legs (e.g., gantry) (Class 212/324)
- Having specific engager for load (Class 212/327)
- Boom mounted for guided horizontal translation (e.g., trolley mounted) (Class 212/224)
- Having trolley thereon (Class 212/225)
- Extensible by movement of boom or boom segment along longitudinal axis thereof (Class 212/230)
- And vertically swinging (Class 212/232)
- And means to swing boom horizontally (Class 212/245)
- Having fluid ram directly actuating load cable or sheave therefor (Class 212/250)
- Having specific engager for load (Class 212/251)
- Having passage for hoist cable through boom supporting member (Class 212/252)
- Having specific bearing structure (Class 212/253)
- And compensating means to maintain horizontal movement of load (Class 212/256)
- And trolley (Class 212/257)
- Protruding laterally from vehicle (Class 212/258)
- Having specific engager for load (Class 212/259)
- Having means to swing boom vertically (Class 212/260)
- Extensible by movement of boom or boom segment along longitudinal axis thereof (Class 212/264)
