Patent ID: 8453558

Claim:
A seal assembly for a ram assembly, said ram assembly having a housing defining a passage and an elongated ram extending through, and longitudinally movable within, said ram housing passage, said ram longitudinal axis defining a primary axis, said ram having a circular cross-section, said seal assembly comprising: a seal assembly housing, said seal assembly housing having a body and a retaining device; said seal assembly housing body defining a passage and having an inner surface, and an outer surface; said seal assembly housing coupled to said ram assembly housing at said passage whereby said seal assembly housing assembly passage and said ram assembly housing passage are generally contiguous; said retaining device structured to engage said seal assembly housing and to move longitudinally along said primary axis; said seal assembly housing and said retaining device extending about said ram; at least one seal pack, said at least one seal pack having at least one split seal, each said at least one split seal shaped to correspond to the cross-sectional shape of said ram; said at least one split seal disposed about said ram and between said retaining device and said housing assembly; said retaining device is structured to adjustably compress said at least one seal; said seal assembly housing body defines a substantially circular passage; said seal assembly housing having a threaded coupling device structured to engage said retaining device; said retaining device being a retaining ring, said retaining ring having a threaded coupling device structured to engage said seal assembly housing threaded couping device; whereby, when said retaining ring threadably engages said seal assembly housing threaded coupling device, rotating said retaining ring causes said retaining ring to move longitudinally over said primary axis; whereby the compression on said at least one seal is adjusted; wherein said retaining device includes a locking device structured to prevent movement of said retaining device while said locking device is engaged; said locking device includes a first component and a second component, said locking device first component structured to move between two positions, a first position wherein said locking device first, component does not engage said locking device second component, and a second position wherein said locking device first component engages said locking device second component; said locking device first component disposed on said seal assembly housing body; and said locking device second component disposed on said retaining device.