Anchoring device
AssigneeMcAlpine & Company Limited
InventorsJames Kenneth McAlpine, James Edward McAlpine
Life of this patent
Estimating the term…
Abstract
An anchoring device (10) comprises a resilient sleeve (16) for receiving an elongate member, such as a bolt (18), and first and second stoppers (20,21) for location on the bolt at respective ends of the sleeve. Movement of the stoppers (20,21) towards one another causes the sleeve (16) to expand radially. The inner first stopper (20) may engage one of the bolt head (22) and nut (24) to resist relative rotation thereof. Alternatively, the inner first stopper may be threaded.
Claims22
An anchoring device comprising:
- a threaded elongate member;
- an elastomeric sleeve for receiving the threaded elongate member;
- inner first and outer second stopper portions each having tubular portions extending into respective ends of the sleeve, the inner first stopper portion defining a thread for co-operating with the elongate member, whereby movement of the stopper portions towards one another causes the sleeve to expand radially, the ratio of sleeve wall thickness to elongate member diameter being between 1:4 and 1:8.
An anchoring device comprising:
- an elastomeric sleeve for receiving a threaded elongate member;
- inner first and outer second stopper portions each having tubular portions extending into respective ends of the sleeve, the inner first stopper portion defining a thread for co-operating with the elongate member, whereby movement of the stopper portions towards one another causes the sleeve to expand radially, wherein a profile extends radially outwardly from the sleeve.
An anchoring device comprising:
- an elastomeric sleeve for receiving a threaded elongate member;
- inner first and outer second stopper portions each having tubular portions extending into respective ends of the sleeve, the inner first stopper portion defining a thread for co-operating with the elongate member, whereby movement of the stopper portions towards one another causes the sleeve to expand radially, wherein the sleeve expands substantially elastically, allowing the device to be set in a bore and subsequently removed for inspection.
An anchoring device comprising:
- an elastomeric sleeve having a first diameter for receiving a threaded elongate member;
- inner first and outer second stopper portions located at respective ends of the sleeve, the inner first stopper consisting of a flange for engaging the respective end of the sleeve and an internally threaded tubular portion extending into the end of the sleeve, the flange having a diameter at least as large as said first diameter, whereby movement of the stopper portions towards one another causes the sleeve to expand radially.
An anchoring device for location in a drilled bore, the device comprising:
- an elongate threaded member having inner and outer ends;
- an elastomeric sleeve for receiving said threaded elongate member;
- and
- inner first and second stopper portions each having tubular portions extending into respective ends of the sleeve and flanges for engaging the respective ends of the sleeve, the inner first stopper portion defining a thread for co-operating with the elongate member, the flange of the first outer stopper portion, for location in an outer end of a drilled bore, having a greater axial extent than the flange of the inner stopper portion, movement of the stopper portions towards one another causing the sleeve to expand radially to engage the wall of the drilled bore, the flange of the first outer stopper portion serving to space the sleeve from the outer end of the bore.
Dependencies are inferred from the claim text.