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Class Information
Number: 212/257
Name: Traversing hoists > Having vertically swinging boom > And trolley
Description: Apparatus wherein the vertically swinging boom* serves as or bears a separate track or guide on which a load-supporting trolley* is adapted to move.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6286695 |
Engine lifting and positioning assembly |
Sep. 11, 2001 |
| 6000562 |
Powered lifting apparatus using multiple booms |
Dec. 14, 1999 |
| 5322404 |
Wall lifting device |
Jun. 21, 1994 |
| 5188247 |
Lifting apparatus |
Feb. 23, 1993 |
| 5052566 |
Engine hoist and support apparatus |
Oct. 1, 1991 |
| 4930970 |
Collapsible hoist for a truck bed |
Jun. 5, 1990 |
| 4883184 |
Cable arrangement and lifting platform for stabilized load lifting |
Nov. 28, 1989 |
| 4772175 |
Space station erectable manipulator placement system |
Sep. 20, 1988 |
| 4693384 |
Excavator boom derrick |
Sep. 15, 1987 |
| 4666049 |
Sideboom excavator with lifting means |
May. 19, 1987 |
| 4613276 |
Vehicle with load handling apparatus |
Sep. 23, 1986 |
| 4572383 |
Crane |
Feb. 25, 1986 |
| 4506791 |
Ship's derrick |
Mar. 26, 1985 |
| 4480757 |
Collapsible frame support for pivotal boom on a portable crane |
Nov. 6, 1984 |
| 4392574 |
Tower crane |
Jul. 12, 1983 |
| 4310277 |
Apparatus for transferring cargo between relatively movable bodies |
Jan. 12, 1982 |
| 4144973 |
Combination hoist and mount |
Mar. 20, 1979 |
| 3967744 |
Extensible reach load lifting mechanism |
Jul. 6, 1976 |
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