Patent ID: 7708089

Claim:
An upper stripper rubber canister apparatus for a rotating control device, comprising: a canister body including an upper end portion, a lower end portion and a central passage extending therebetween, wherein the central passage is configured for having a stripper rubber assembly disposed therein, wherein the lower end portion includes a mounting structure configured for being engaged with an inner barrel of a bearing assembly in a manner that precludes rotation between the canister body and the inner barrel, wherein the upper end portion includes a breech lock structure exposed within the central passage, wherein the canister body includes a key-receiving recess exposed at an upper edge thereof and extending through an exterior sidewall surface of the canister body into a respective one of said canister body spline members thereby forming a fastener-receiving notch within the exterior sidewall of the canister body; and a canister body lid including an upper end portion, a lower end portion, a central passage extending between said end portions thereof, and a stripper rubber assembly mounting structure configured for allowing a stripper rubber assembly to be attached thereto, wherein the lower end portion is configured for fitting within the central passage of the canister body at the upper end portion of the canister body, wherein the canister body lid includes a breech lock structure integral with an exterior surface of the canister body lid adjacent the lower end portion thereof, wherein said canister body lid breech lock structure is configured for allowing the canister body lid to be fixedly engaged with the canister body by inserting the lower end portion of the canister body lid into said canister body central passage at the upper end portion thereof and rotating the canister body lid with respect to the canister body such that at least a portion of said canister body breech lock structure become at least partially overlapped with a respective one of said canister body lid breech lock structure, and wherein the canister body lid includes a key-receiving recess extending through a exterior edge surface of the flange thereby forming a notch within the exterior edge surface of the flange; wherein said key-receiving recesses are respectively positioned to be aligned when said breech lock structures are in said overlapped orientation thereby allowing a key to be positioned within said key receiving recesses to preclude unrestricted rotational displacement between the canister body and the canister body lid.