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US 5,634,741 AGranted
Form-drain filter clamp
OwnerRichard L. Tremblay, Christopher G. Semenzainventors
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OwnerRichard L. Tremblay, Christopher G. Semenzainventors
Estimating the term…
A clamping mechanism for removably attaching a fabric to a foraminous element having generally a plank shape. A form-drain is a hollow, foraminous, plank-shaped conduit. The clamp of the invention is a semi-rigid strip of material such as polyvinylchloride. From the strip depend orthogonal projections which form, in a first model, a U-form of shallow definition; this is the "cap" model and is used to capture a fabric between it and the top surface of the form-drain. An alternate embodiment realizes the same strip with depending orthogonal studs (as projections). Projections of both embodiments include mechanisms to impede retrograde motion of the clamp once it is installed on the form-drain. In anticipation of changes to the form-drain, alternate models of the invention have been presented.
A form-drain filter combination comprising:
A form-drain and filter clamp assembly comprising:
A filter clamp for securing a fabric to a rigid, hollow and foraminous form-drain, said form-drain used to form a concrete footing and subsequently serve as a drain means therefor, said clamp comprising an elongated, semi-rigid member having a preponderantly flat character and including a gripping means that is shaped to effect a capture of the fabric between the form-drain and the clamp when the latter is mated to the former and, further, the clamp effective for making full contact between the fabric and said flat character.
Dependencies are inferred from the claim text.