Rotor blade retainer

Claim 2

A bladed rotor structure comprising, in combination, an annular rim having an end face and blade slots extending generally axially of the rim from the end face; blades having roots slidably insertable into and mounted in the slots, the blades and rim having abutment means limiting movement of the roots into the rim and the roots having a portion within the slot inset from the rim face when the blades are in place; the rim face having two opposed overlying flanges defining between them a retainer mounting groove intersecting the blade slots; and a ring of blade retaining plates disposed in the said groove, the blade retaining plates overlying the blade roots to prevent movement of the blade roots from the slots, each retaining plate including a tab deformable into a blade slot confronting a said root portion.

Claim 3

A bladed rotor structure comprising, in combination, an annular rim having an end face and blade slots extending generally axially of the rim from the end face; blades having roots slidably insertable into and mounted in the slots, the blades and rim having abutment means limiting movement of the roots into the rim and the roots having a portion within the slot inset from the rim face when the blades are in place; the rim face having two opposed overlying flanges defining between them a retainer mounting groove intersecting the blade slots; and a ring of blade retaining plates disposed in the said groove and engaging end-to-end, the blade retaining plates overlying the blade roots to prevent movement of the blade roots from the slots, each retaining plate including a tab deformable into a blade slot confronting a said root portion, each retaining plate including an end portion adapted to engage the next retaining plate deformable away from the rim to free the retaining plate for circumferential movement for removal of a plate.

Claim 4

A bladed rotor structure comprising, in combination, an annular rim having an end face and blade slots extending generally axially of the rim from the end face; blades having roots slidably insertable into and mounted in the slots, the blades and rim having abutment means limiting movement of the roots into the rim and the roots having a portion within the slot inset from the rim face when the blades are in place; the rim face having two opposed overlying flanges defining between them a retainer mounting groove intersecting the blade slots; and a ring of blade retaining plates disposed in the said groove and engaging end-to-end, the blade retaining plates overlying the blade roots to prevent movement of the blade roots from the slots, each retaining plate including a tab deformable into a blade slot confronting a said root portion, each retaining plate including an end portion adapted to engage the next retaining plate deformable away from the rim to free the retaining plate for circumferential movement for removal of a plate.

Claim 5

A bladed rotor structure comprising, in combination, a rotor rim having an axis of revolution and having a radial face, the rotor having an undercut groove extending around the face bounded by inner and outer overlying flanges and having dovetail blade mounting slots extending across the face, the slots interrupting the outer flange; blades extending from the rim having roots mounted in the slots, each blade root including a lug abutting the face of the rim to limit blade movement into the slot; and a removable blade locking member restraining blade movement out of the slot, the member being a unitary plate including a strip extending along the groove across at least one slot and received behind the inner flange, at least two fingers received behind the outer flange, and a tab deformable into a blade mounting slot to lock the member against movement circumferentially of the rim.

Claim 6

A bladed rotor structure comprising, in combination, a rotor rim having an axis of revolution and having a radial face, the rotor having an undercut groove extending around the face bounded by inner and outer overlying flanges and having dovetail blade mounting slots extending across the face, the slots interrupting the outer flange; blades extending from the rim having roots mounted in the slots, each blade root including a lug abutting the face of the rim to limit blade movement into the slot; and a removable blade locking member restraining blade movement out of the slot, the member being a unitary plate including a strip extending along the groove across at least one slot and received behind the inner flange, at least two fingers received behind the outer flange, and a tab deformable into a blade mounting slot to lock the member against movement circumferentially of the rim.

Claim 7

A bladed rotor structure comprising, in combination, a rotor rim having an axis of revolution and having a radial face, the rotor having an undercut groove extending around the face bounded by inner and outer overlying flanges and having dovetail blade mounting slots extending across the face, the slots interrupting the outer flange; blades extending from the rim having roots mounted in the slots, each blade root including a lug abutting the face of the rim to limit blade movement into the slot; removable blade locking members restraining blade movement out of the slot, each member being a unitary plate including a strip extending along the groove across at least one slot and received behind the inner flange, at least two fingers received behind the outer flange, and a tab deformable into a blade mounting slot to lock the member against movement circumferentially of the rim, the locking members being in end-to-end abutment around the rim, and each locking member including a part deformable for release of the said locking member abutting the next adjacent locking member.

Claim 8

A bladed rotor structure comprising, in combination, a rotor rim having an axis of revolution and having a radial face, the rotor having an undercut groove extending around the face bounded by inner and outer overlying flanges and having dovetail blade mounting slots extending across the face, the slots interrupting the outer flange; blades extending from the rim having roots mounted in the slots, each blade root including a lug abutting the face of the rim to limit blade movement into the slot; removable blade locking members restraining blade movement out of the slot, each member being a unitary plate including a strip extending along the groove across at least one slot and received behind the inner flange, at least two fingers received behind the outer flange, and a tab deformable into a blade mounting slot to lock the member against movement circumferentially of the rim, the locking members being in end-to-end abutment around the rim, and each locking member including a part deformable for release of the said locking member abutting the next adjacent locking member.