Patent ID: 11877737
Assignee: ULTRADENT PRODUCTS, INC.
Field: nan (nan)
Classification: CPC nan | IPC A

Claim 20:
21. A frame of a cheek and lip expansion device, the frame comprising:
an upper frame portion including a first upper side member, a second upper side member, a first upper connecting portion, and a second upper connecting portion;
a lower frame portion including a first lower side member, a second lower side member, a first lower connecting portion, and a second lower connecting portion;
a first posterior thickened structure disposed between the first upper side member and the first lower side member, the first posterior thickened structure having an enlarged cross-section relative to adjacent frame portions;
a second posterior thickened structure disposed between the second upper side member and the second lower side member, the second posterior thickened structure having an enlarged cross-section relative to adjacent frame portions; and
a posterior crossbar that connects the first posterior thickened structure to the second posterior thickened structure;
wherein the first and the second posterior thickened structures are resistant to bending; and
wherein the first and the second posterior thickened structures are configured to transfer a flexing force acting to press a first frame portion towards a second frame portion.