Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
121 words
A disk file including a filtration system, the disk file comprising a disk enclosure (16) containing a disk (30) for information storage, information retrieval means for extracting information from the disk, means (22,34) for mounting the disk on a shaft (20), bearing means (24,26) for rotatably mounting the rotatable member and the disk relative to a support frame (10) characterised in that the disk file includes filtration means fixed to the support frame between the bearing means and the means for mounting the disk and mounted sufficiently closely to the shaft that most of the air flowing from the bearing means into the disk enclosure passes through the filtration means, whereby the filtration means traps contamination shed by the bearing means.
Claim 2
Dependent Claim
121 words
A disk file including a filtration system, the disk file comprising a disk enclosure (16) containing a disk (30) for information storage, information retrieval means for extracting information from the disk, means (22,34) for mounting the disk on a shaft (20), bearing means (24,26) for rotatably mounting the rotatable member and the disk relative to a support frame (10) characterised in that the disk file includes filtration means fixed to the support frame between the bearing means and the means for mounting the disk and mounted sufficiently closely to the shaft that most of the air flowing from the bearing means into the disk enclosure passes through the filtration means, whereby the filtration means traps contamination shed by the bearing means.
Claim 3
Dependent Claim
73 words
A disk file as claimed in claim 1 further characterised in that the bearing means (24,26) is not sealed from the atmosphere surrounding the disk enclosure (16), such that replacement air to replace air leaking from the disk enclosure can enter the disk enclosure via the bearing means and the filtration means (50), whereby the filtration means traps contamination borne by the replacement air in addition to that shed by the bearing means.
Claim 4
Dependent Claim
87 words
A disk file as claimed in claim 1 or claim 2 further characterised in that the filtration means (50) comprises a support ring (52,56) adapted to support and retain a ring of filter material (60), the support ring and the ring of filter material each being disposed around a portion of the rotatable member (20), the support ring having a plurality of openings (54,58) whereby air may flow from the bearing means (24,26) to the disk enclosure (16) via the openings and the ring of filter material.
Claim 5
Dependent Claim
34 words
A disk file as claimed in claim 3 further characterised in that the inner circumference of said support ring (52,56) is located in close proximity to the outer surface of the rotatable member (20).
Claim 6
Dependent Claim
67 words
A disk file as claimed in claim 3 or claim 4 further characterised in that the support ring (52,56) is fabricated as two parts, one part (56) arranged to interlock with the other (52) and both arranged to clamp the ring of filter material (60) between them and to provide said plurality of openings, each part of the support ring being in the shape of a ring.
Claim 7
Dependent Claim
51 words
A disk file as claimed in claim 3, claim 4 or claim 5 further characterised in that it further comprises means (57) for directing airflow so as to increase the proportion of air flowing from the bearing means (24,26) to the disk enclosure (16) which flows through the filtration means (50).