Craig R Rinschler

US Patent:

50572172, Oct 15, 1991

Filed:

Jun 25, 1987

Appl. No.:

7/066281

Inventors:

John H. Lutz - Claymont DE
James L. Manniso - Newark DE
Craig R. Rinschler - Hockessin DE
Gordon R. S. Smith - Northeast MD

Assignee:

W. L. Gore & Associates, Inc. - Newark DE

International Classification:

B01D 2939
B01D 2933

US Classification:

210346

Abstract:

An integral filter leaf assembly comprising microporous polymeric filter cloths heat-bonded to the apices of an undulating screen to form a strong unitary pressure resistant filter unit which essentially replaces filter leaf assemblies. The screen and felt sides of the filter cloths are preferably heat sealable thermoplastics, usually polypropylene to allow heat-bonding and heat-sealing of seams throughout for a unitary assembly strong in compression. Outer filter coat is preferably porous expanded polytetrafluoroethylene. Optionally, a circumferential stiff load-bearing frame may be enclosed within the assembly.

US Patent:

49311786, Jun 5, 1990

Filed:

Apr 16, 1985

Appl. No.:

6/723848

Inventors:

James L. Manniso - Newark DE
John H. Lutz - Claymont DE
Craig R. Rinschler - Hockessin DE

Assignee:

W. L. Gore & Associates, Inc. - Newark DE

International Classification:

B01D 2512

US Classification:

210228

Abstract:

This invention provides a filter cloth assembly for use on a filter plate of a center-feed filter press, which comprises a two-part filter cloth with fittings for rapid and easy assembly on the filter plate, one cloth on each side. Methods of manufacture of the novel assembly and its parts and a new method for bonding otherwise incompatible plastics and elastomers are disclosed.