The screen system comprises a dual screen having a coarse mesh upper screen attached to a finer mesh lower screen with a channel between the two screens.

A screen cylinder, screen, method of manufacture of the screen cylinder, and method of use of the screen cylinder, allow screen capacity to be maximized without sacrificing screen cylinder strength, and while achieving a clean accepts flow.

A screen assembly for a vibratory shaker, the screen assembly including at least two screening members, and the at least two screen members connected by sewing material.

The invention also provides a method for screening using the screen of the invention, a shale shaker incorporating a screen of the present invention and a panel of the screen of the invention.

A shaker screen including a screen frame and an inflatable sealing element integrally formed with the screen frame is disclosed.

A vibrating sieve comprises a sieve frame (3), a sieve mesh (1), and a vibrating head (2).

A screen for a lighting device and a method of manufacturing such a screen are provided.

The support includes a macroporous binder and a sieve selected from the group consisting of a medium pore sieve, a large pore sieve, and mixtures thereof.

A screen unit with a substantially cylindrical hollow screen element (8) is used for this purpose.

A mesoporous alumina molecular sieve and a method of manufacturing a mesoporous alumina molecular sieve are provided.

This device, preferably formed as a dual screen paper machine, has according to a preferred embodiment two endless screens, mainly a lower screen (21) and an upper screen (22).

The screening arrangement may furthermore comprise a screening situated in the plane of the screen-carrying frame, which screening is preferably a roll-up screening.

An apparatus for preventing erosion of wellbore components comprises a wellscreen (126) and a coating disposed on the wellscreen.

A unidirectional drying filter comprising an end cap (1), a cylindrical body (6), an inlet end cap (10), parallely-perforated mesh (8), filter mesh (4), glass fiber (5), granular molecular sieve (7), and a spring (9).

The strainer insert comprises at least one grinding strainer (3) on a strainer carrier (2), the grinding strainer and the strainer carrier being separate units, which can move relative to each other at least in one spatial direction.