Patent ID: 8123180

Claim:
An elevation adjustment mechanism comprising a housing, the housing comprising a first end region and a second end region, the housing comprising: a ram cylinder, the ram cylinder being a hollow tube; a sleeve, the sleeve being a hollow tube, the sleeve having a first end region, at least a portion of the sleeve being disposed within at least a portion of the ram cylinder; a coarse adjustment lever; a coarse adjustment rod, a first portion of the coarse adjustment rod extending into a first end of the housing so that the first end region of the housing encircles the first portion of the coarse adjustment rod; a clamping assembly, the clamping assembly engaged to the coarse adjustment lever and releasably engaged to the coarse adjustment rod, the clamping assembly at least partially residing within an opening defined by the housing, the clamping assembly being engaged to the coarse adjustment lever; a fine adjustment washer, the fine adjustment washer being positioned onto the first end region of the sleeve; a fine adjustment nut, the fine adjustment nut being positioned onto the first end region of the sleeve, the fine adjustment nut being engaged to the fine adjustment washer; and a fine adjustment rod, a portion of the fine adjustment rod being disposed within at least a portion of the sleeve.