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US 2018/0044145 A1Published application
Lifting arrangement
AssigneeMhwirth AS
InventorERLEND ANGEL-DALANE
Life of this patent
Estimating the term…
Abstract
A back-up load retention system includes a retention line which is connected to a load, a counterweight unit which is connected to the retention line, and a double-acting hydraulic cylinder which is connected to the counterweight unit. The counterweight unit maintains a tension force in the retention line. The double-acting hydraulic cylinder brakes and/or stops the load in a case of a failure in a main lifting system.
Claims21
1-12. (canceled)
A back-up load retention system comprising:
- a retention line configured to be connected to a load;
- a counterweight unit connected to the retention line, the counterweight unit being configured to maintain a tension force in the retention line;
- and
- a double-acting hydraulic cylinder connected to the counterweight unit, the double-acting hydraulic cylinder being configured to at least one of brake and stop the load in a case of a failure in a main lifting system.
1 more element
A lifting system comprising:
- a main lifting system configured to be connected to a load;
- and
- a back-up load retention system comprising:
- a retention line configured to be connected to the load,
- a counterweight unit connected to the retention line, the counterweight unit being configured to maintain a tension force in the retention line, and
- a double-acting hydraulic cylinder connected to the counterweight unit, the double-acting hydraulic cylinder being configured to at least one of brake and stop the load in a case of a failure in a main lifting system of the load.
3 more elements
A back-up load retention system comprising:
- a retention line configured to be connected to a load;
- a counterweight configured to maintain a tension force in the retention line;
- and
- a double-acting hydraulic cylinder connected to the counterweight, the double-acting hydraulic cylinder being configured to at least one of brake and stop the load in a case of a failure in a main lifting system.
1 more element
Dependencies are inferred from the claim text.