Pick up sub
AssigneeBaldwin Machining & Installation Ltd.
InventorsJoanne M.I. Dupras, Anthony D. Kadatz
Life of this patent
Estimating the term…
Abstract
A pick up sub includes a male body with a lifting attachment at a first end and an integrally formed male member with external threads at a second end. The male member is received in mating relation within an interior bore of a female body. At least one nut engages external threads at an extremity of the male member to secure the male body to the female body. The nut fits within a second portion of the interior bore, but is too large to fit within a first portion of the interior bore. A hand wheel is secured to the female body to deliver a jarring impact of a hammer against an anvil when the threaded pin connection is engaged with a box connection of a tubular component, thereby eliminating the need for a wrench or tongs.
Claims5
A pick up sub, comprising:
- a male body having a first end and a second end, with a lifting attachment at the first end and an integrally formed male member at the second end, an extremity of the male member having external threads;
- a female body having a first end, a second end, an exterior surface, and an interior surface defining an interior bore extending axially between the first end and the second end, the exterior surface having a threaded pin connection at the second end, the interior bore having a first portion of a first diameter at the first end and a second portion of a second diameter at the second end, the second diameter being larger than the first diameter;
- the male member of the male body being received in mating relation within the interior bore of the female body;
- at least one nut engaging the external threads at the extremity of the male member to secure the male body to the female body, the nut fitting within the second portion of the interior bore, but being too large to fit within the first portion of the interior bore;
- and
- a hand wheel being secured to the female body, the hand wheel having inwardly oriented contact members, rotation in a first rotational direction being limited by a first hammer face on one of the contact members engaging a first anvil on the male body, rotation in a second rotational direction being limited by a second hammer face on one of the contact members engaging a second anvil on the male body, thereby delivering a jarring impact when the threaded pin connection is engaged with a box connection of a tubular component.
A pick up sub, comprising:
- a male body having a first end and a second end, with a lifting attachment at the first end and an integrally formed male member at the second end, an extremity of the male member having external threads;
- a female body having a first end, a second end, an exterior surface, and an interior surface defining an interior bore extending axially between the first end and the second end, the exterior surface having a threaded pin connection at the second end, the interior bore having a first portion of a first diameter at the first end and a second portion of a second diameter at the second end, the second diameter being larger than the first diameter;
- the male member of the male body being received in mating relation within the interior bore of the female body;
- a pair of adjacent nuts engaging the external threads at the extremity of the male member to secure the male body to the female body, the nut fitting within the second portion of the interior bore, but being too large to fit within the first portion of the interior bore;
- a retention washer at the extremity of the male member, the retention wash fitting within the second portion of the interior bore but being too large to fit within the first portion of the interior bore, the retention washer being held in position by a snap ring;
- a bushing between the male member and interior surface of the female body to facilitate relative rotation of the male body and the female body;
- and
- a hand wheel being secured to the female body, the hand wheel having inwardly oriented contact members, rotation in a first rotational direction being limited by a first hammer face on one of the contact members engaging a first anvil on the male body, rotation in a second rotational direction being limited by a second hammer face on one of the contact members engaging a second anvil on the male body, thereby delivering a jarring impact when the threaded pin connection is engaged with a box connection of a tubular component.
Dependencies are inferred from the claim text.