Patent ID: 7581647

Claim:
A shale shaker comprising a base, vibration isolation apparatus connected to said base, a basket connected to said vibration isolation apparatus, vibrator apparatus connected to the basket to vibrate said basket, at least one of said base, said basket and said vibration isolation apparatus including a first portion made of flexible composite material and a second portion made of rigid composite material, the vibration isolation apparatus including basket spring mounts connected to the basket, base mount members connected to the base, a spring on each base mount member positioned below a basket spring mount, the first portion made of flexible composite material comprising a portion of the base mount members and the second portion made of rigid composite material comprising a portion of the base mount members, the vibration isolation apparatus including a spring mount base with a core and a portion surrounding the core, the core made of flexible composite material, a first ring around the core, the ring made of rigid material, the first portion made of flexible composite material comprising a second ring around the first ring.