Lock for threaded in place nosecone or spinner
AssigneeUnited Technologies Corporation
InventorAnthony R. Bifulco
Life of this patent
Estimating the term…
Abstract
A lock for securing a nosecone having first threading to an inlet case having second threading and for use with a gas turbine engine having an axis includes an annular ring designed to be positioned about the first threading. The lock also includes a tab extending radially from the annular ring, and having a ramped circumferential end and an angled circumferential end such that the ramped circumferential end passes over a detent of the inlet case in response to the nosecone being fastened to the inlet case and the angled circumferential end engages with the detent to resist unfastening of the nosecone from the inlet case.
Claims19
A lock for securing a nosecone having first threading to an inlet case having second threading of a gas turbine engine having an axis, comprising:
- an annular ring configured to be positioned about the first threading;
- and
- a tab extending radially from the annular ring, and having a ramped circumferential end and an angled circumferential end such that the ramped circumferential end passes over a detent of the inlet case in response to the nosecone being fastened to the inlet case and the angled circumferential end engages with the detent to resist unfastening of the nosecone from the inlet case;
- wherein the tab further includes a first tab portion having the ramped circumferential end, a second tab portion having the angled circumferential end, and a space positioned circumferentially between the first tab portion and the second tab portion;
- wherein the angled circumferential end of the tab is configured to be disengaged from the detent such that the nosecone can be unfastened by applying an axially forward force or a radially inward force to the tab.
A nosecone configured for use with an inlet case having second threading of a gas turbine engine having an axis, comprising:
- a cone portion having first threading configured to mate with the second threading to couple the cone portion to the inlet case;
- and
- a lock having:
- an annular ring configured to be positioned about the first threading, and
- a tab extending radially from the annular ring, and having a ramped circumferential end and an angled circumferential end such that the ramped circumferential end passes over a detent of the inlet case in response to the cone portion being fastened to the inlet case and the angled circumferential end engages with the detent to resist unfastening of the cone portion from the inlet case.
A gas turbine engine having an axis, comprising:
- an inlet case having second threading;
- a cone portion having first threading configured to mate with the second threading to couple the cone portion to the inlet case;
- and
- a lock having:
- an annular ring configured to be positioned about the first threading, and
- a tab extending radially from the annular ring, and having a ramped circumferential end and an angled circumferential end such that the ramped circumferential end passes over a detent of the inlet case in response to the cone portion being fastened to the inlet case and the angled circumferential end engages with the detent to resist unfastening of the cone portion from the inlet case.
Dependencies are inferred from the claim text.