Abstract: A core catcher for a coring tool may include a sleeve including a slit extending along at least a portion of a height of the sleeve. A crosspiece may extend at least partially across the at least one slit and at least partially around a perimeter of the sleeve. A track may extend at least partially around the perimeter of the sleeve, the crosspiece being slidably engaged with the track. The crosspiece and the track may be configured to cooperatively delimit relative movement of portions of the sleeve on opposite sides of the slit as a width of the slit increases or decreases responsive to receipt of a core sample into the core catcher.

Abstract: A core catcher for a coring tool, may include a sleeve including a slit extending along at least a portion of a height of the sleeve. A crosspiece may extend at least partially across the at least one slit and at least partially around a perimeter of the sleeve. A track may extend at least partially around the perimeter of the sleeve, the crosspiece being slidably engaged with the track. The crosspiece and the track may be configured to cooperatively delimit relative movement of portions of the sleeve on opposite sides of the slit as a width of the slit increases or decreases responsive to receipt of a core sample into the core catcher.

Abstract: A core catcher for a coring tool comprises a sleeve comprising a longitudinal axis and at least one slit extending at least partially along a height of the sleeve between an upper end and a lower end thereof. The at least one slit separates a first side surface and a second side surface of the sleeve. The first and second side surfaces are located a first distance and a second distance from the longitudinal axis, respectively, measured in a direction transverse to the longitudinal axis. The core catcher further comprises a bridging element extending at least partially about a sleeve perimeter. The bridging element operatively couples movement of the first side surface and the second side surface to limit a difference between the first and second distances as a width of the at least one slit that separates the first side surface and the second side surface increases or decreases.

Abstract: A core catcher for a coring tool comprises a sleeve comprising a longitudinal axis and at least one slit extending at least partially along a height of the sleeve between an upper end and a lower end thereof. The at least one slit separates a first side surface and a second side surface of the sleeve. The first and second side surfaces are located a first distance and a second distance from the longitudinal axis, respectively, measured in a direction transverse to the longitudinal axis. The core catcher further comprises a bridging element extending at least partially about a sleeve perimeter. The bridging element operatively couples movement of the first side surface and the second side surface to limit a difference between the first and second distances as a width of the at least one slit that separates the first side surface and the second side surface increases or decreases.