Static structures (e.g. – buildings) – Mechanism operated relatively movable shaft assembly – Tilts relative to base
Patent
1977-10-17
1979-02-13
Perham, Alfred C.
Static structures (e.g., buildings)
Mechanism operated relatively movable shaft assembly
Tilts relative to base
52116, E04H 1234
Patent
active
041388054
ABSTRACT:
A first and second mobile trailer means are secured together for forming a base substructure support for a mast, setback tower and drawworks. A working floor is provided in elevated position above the base substructure support when the mast, setback tower and drawworks is in position to conduct well operations. The telescoping mast and setback structure is pivotally carried on the first trailer means and a drawworks is pivotally carried by the second trailer means. A power and rig up arrangement is provided to elevate in a desired sequence the mast, setback structure and drawworks to a desired position for securing on the base substructure support formed by the first and second trailer means for conducting well operations.
REFERENCES:
patent: 3228151 (1966-01-01), Woolslayer et al.
patent: 3749183 (1973-07-01), Branham et al.
Hayden Jack W.
Perham Alfred C.
Pyramid Manufacturing Company
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