Screw able device with retractable thread sections

An eyebolt comprising:

• a generally tubular shaft extending along a longitudinal axis and having a front section formed with a radially outwardly open aperture and a rear section,
• at least one locking element comprising a threaded section and being radially displaceable in the aperture between an outer position with the threaded section projecting radially outward from the shaft and an inner position in which the threaded section is recessed within the tubular shaft,
• an actuating rod coaxially slidable in the shaft between a front position and a rear position,
• the actuating rod comprising a push-button at its rod rear end,
• the actuating rod comprising a structure for engaging the locking element in at least one of its positions pressing the locking element into the outer locking position,
• a spring coaxially aligned with the longitudinal axis, having a first spring end abutting against the push-button of the actuating rod and having a second spring end abutting against an inner shoulder of the tubular shaft, the spring urging the actuating rod to its rear position,
• the push-button comprises a lengthwise oblong passage, in which a bolt is positioned, the oblong passage limiting a longitudinal movement between the bolt within the passage and the actuating rod,
• the tubular shaft comprising throughgoings, in which the bolt is mounted, the bolt comprising protrusions protruding radially outward of the tubular shaft, and
• a one-sided open ring, wherein a first end of a one-sided open ring is connected to a first one of the protrusions and a second end of the one-sided open ring is connected to a second one of the protrusions.

A lifting eye comprising:

• a generally tubular shaft extending along a longitudinal axis and having a front section formed with a radially outwardly open aperture and a rear section,
• at least one locking element comprising a threaded section and being radially displaceable in the aperture between an outer position with the threaded section projecting radially outward from the shaft and an inner position in which the threaded section is recessed within the tubular shaft,
• an actuating rod coaxially slidable in the shaft between a front position and a rear position,
• the actuating rod comprising a push-button at its rod rear end,
• the actuating rod comprising a structure for engaging the locking element in at least one of its positions pressing the locking element into the outer locking position,
• a spring coaxially aligned with the longitudinal axis, having a first spring end abutting against the push-button of the actuating rod and having a second spring end abutting against an inner shoulder of the tubular shaft, the spring urging the actuating rod to its rear position,
• the push-button comprises a lengthwise oblong passage, in which a bolt is positioned, the oblong passage limiting a longitudinal movement between the bolt within the passage and the actuating rod,
• the tubular shaft comprising throughgoings, in which the bolt is mounted, the bolt comprising protrusions protruding radially outward of the tubular shaft, and
• an eyelet being connected to the first protrusion by way of a first connecting element and being connected to the second protrusion by way of a second connecting element.