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Document |
Document Title |
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7503548 |
Winch device
The invention relates to a winch device with a first winch having a first winch drum and a second winch having a second winch drum. There is also a synchronizing device through which a rotation of...
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7028811 |
Vehicle lifting platform
A lifting platform for vehicles having at least one column, at least one support arm shiftable on the column by vertical guides and having supports. The lifting platform also includes a prime mover...
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4779844 |
Draw works for mobile cranes
A draw works for a mobile crane, to selectively reel in and reel out the cable of the crane by appropriate rotation of the cable pulley, includes a stable platform having mounted in fixed...
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4454978 |
Process for improved manufacture of shells for tunnel tubes
This invention relates to improved apparatus and process for manufacture of tunnel modules and tunnel sections used to build underwater tunnel tubes. A collapsible fixture is situated to roll up...
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4418561 |
Apparatus for manufacture of tunnel tubes
This invention relates to improved apparatus and process for manufacture of tunnel modules and tunnel sections used to build underwater tunnel tubes. A collapsible fixture is used to roll up a...
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4406151 |
Collapsible fixture for manufacture of tunnel tubes
An improved collapsible fixture for fabrication of tunnel modules and tunnel sections for building underwater tunnel tubes is provided. The fixture has a series of shell-like support members along...
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4406150 |
Apparatus and process for improved manufacture of shells for tunnel tubes
This invention relates to improved apparatus and process for manufacture of tunnel modules and tunnel sections used to build underwater tunnel tubes. A collapsible fixture is situated to roll up...
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4168937 |
Ice rake with automatic leveling hoist
An ice rake and hoist are disclosed. The ice rake is suspended over an ice storage bin by two pairs of cables, one pair on each side of the rake. The cables of each pair are joined together and...
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4029297 |
Winches for use with high masts
A double-rope winch, which is designed for supporting a load such as a lantern carriage from the top of a high mast, has a primary drum which receives one of the ropes and is provided with driving...
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3801070 |
HOIST SYSTEM
A hoist system including elevated means having spaced contact points, carrier means disposed below the elevated means, having similarly arranged contact points, cable means operatively...
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3285575 |
Aerial target towing installations
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3130597 |
Servo-mechanisms
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2918718 |
Body lift
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0938611 |
Title is not available
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