초록 ▼

A clamp for securing a removable cover on a screening machine is an over-center mechanical clamp which includes two distinct clamping force adjustment mechanisms. A first clamping force adjustment mechanism includes a plurality of clamping positions on a support bracket mounted on the cover. The cla

A clamp for securing a removable cover on a screening machine is an over-center mechanical clamp which includes two distinct clamping force adjustment mechanisms. A first clamping force adjustment mechanism includes a plurality of clamping positions on a support bracket mounted on the cover. The clamp handle assembly is selectively positioned in one of the clamping positions on the support bracket to provide incrementally different clamping force levels. Additionally, irrespective of the clamping position, rotation of a threaded rod of the clamp adjusts the clamping force. A force level indicator is provided on the clamp to indicate the clamping force produced by the clamp.

대표청구항 ▼

[ We claim:] [1.] A screening machine having a screen box and a removable cover releasably secured to the screen box by a plurality of clamps, each of the clamps comprising:a toggle assembly mounted to one of the cover and the screen box;a support bracket mounted to the other of the cover and the sc

[ We claim:] [1.] A screening machine having a screen box and a removable cover releasably secured to the screen box by a plurality of clamps, each of the clamps comprising:a toggle assembly mounted to one of the cover and the screen box;a support bracket mounted to the other of the cover and the screen box;a plurality of spaced clamping positions on the support bracket each of which is adapted to receive and hold a portion of the toggle assembly, the toggle assembly engaging the support bracket at one of the plurality of clamping positions to thereby releasably secure the cover to the screen box, whereby the clamp provides a different clamping force corresponding to the different clamping positions engageable by the toggle assembly;a secondary clamping force adjustment mechanism which provides for adjustment of the clamping force of the clamp irrespective of which of the clamping positions is engaged by the toggle mechanism.