Patent ID: 9625235
Date: 2017-04-18
CPC Classifications: F41G,G02B

Claim:
1. An optical sight comprising: a housing having a first bearing surface integrally formed therewith; a relay assembly having at least one optical element, a main tube, and a track tube having at least one track, said track tube selectively rotatable relative to and about said main tube to adjust an axial position of said at least one optical element within said main tube along an axis that is substantially parallel to a longitudinal axis of said main tube, said main tube including a spherical surface that is in contact with said first bearing surface of said housing to define a pivot point of said main tube within said housing; and a biasing element attached to said main tube, wherein said biasing element includes a first end fixed for movement with said main tube and a second end in contact with an inner surface of said housing, said biasing element exerting a force on said main tube when said main tube is installed in said housing.