Spring-biased pin connection system
View Patent ↗A connection system is described for connecting parts of an apparatus. A first part having one or more pin receptacles cooperatively mates to a second part housing one or more spring-biased pin assemblies to provide a fluid-tight seal. The second part further provides one or more pin assembly housings. The first and second parts assemble such that at least one pin assembly housing aligns with at least one pin receptacle. At least one pin assembly disposed through the at least one pin assembly housing selectively engages the pin receptacle to secure the connection of the first part to the second part of the apparatus. Each pin assembly may include a pin assembly sleeve having a spring stop; a spring seated within the sleeve; a pin, also having a spring stop, axially disposed through the spring, and a pin handle connected to the pin distally from the pin spring stop. The pin selectively engages the retention pin receptacle with a spring-loaded bias to secure the connection of the first part to the second part of the apparatus. The invention contemplates an adapter between the first and second parts. The connection system is illustrated by reference to connecting a stripper rubber to equipment of a drilling head at a well.
1. An assembly for connecting a stripper rubber to drilling head equipment, the assembly comprising:
an adapter having a primary bore and comprising a circular groove concentric to the primary bore to receive a stripper rubber insert flange, the adapter further comprising means for connecting the adapter to the drilling head equipment and one or more pin assembly housings to receive at least one spring-biased pin assembly;
a stripper rubber insert comprising a circular flange adapted to fit into the circular groove of the adapter, the flange further comprising one or more pin receptacles, wherein the stripper rubber insert cooperatively mates with the adapter groove such that at least one pin assembly housing aligns with at least one pin receptacle;
one or more fluid-tight seals between the adapter and the stripper rubber insert; and
at least one pin assembly having a spring-biased pin, housed in at least one pin assembly housing of the adapter, wherein the pin selectively engages the pin receptacle of the stripper rubber insert flange with a spring-loaded bias to secure the connection of the adapter to the stripper rubber.