Seal assembly for internal mixers

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

277 72FM, 277134, F16J 1544

Patent

active

050568000

ABSTRACT:
A seal assembly for the rotor shafts of internal mixers and the like used in the compounding of rubber and plastic. The assembly (20, 100) comprises seal rotor (21) carried by the rotor shafts (15, 16) outside of the mixing chamber (14) of the mixer (10) and having a continuous circumferential portion (24) for the bi-directional movement of a viscous melt of flowing material, sleeve (22) non-rotatably carried by the housing (18) of the mixer concentrically disposed about the seal rotor, and retainer (23) rotatable with the rotor shaft and engageable with the seal rotor (21) so as to cause the seal rotor to rotate therewith, wherein movement of the flowable material between the continuous circumferential portion and the sleeve forms a dynamic melt seal thereby controlling the discharge of materials from the mixing chamber between the housing and the rotor shaft. A method for controlling the discharge of materials from the mixing chamber (14) of an internal mixer (10), having at least one rotatable rotor (11) providing opposed shafts (15, 16 ) which pass through the housing (18) of the internal mixer (10), includes the step of continuously providing a flow of viscous melt material within the continuous circumferential portion to form a dynamic melt seal between the seal rotor and the sleeve of the seal assembly, thereby controlling the discharge of materials from the mixing chamber between the housing and the rotor shaft.

REFERENCES:
patent: 450004 (1891-04-01), Daley
patent: 2721747 (1955-10-01), Whitfield
patent: 3131942 (1964-05-01), Ertaud
patent: 3364523 (1968-01-01), Schippers
patent: 3700247 (1972-10-01), Butler et al.
patent: 3746349 (1973-07-01), Smale et al.
patent: 3749412 (1973-07-01), Lingley
patent: 3963247 (1976-06-01), Nommensen
patent: 3968969 (1976-07-01), Mayer et al.
patent: 4509773 (1985-04-01), Wentworth
patent: 4521026 (1985-06-01), Eide
patent: 4575306 (1986-03-01), Monnot
patent: 4790736 (1988-12-01), Keuchel
patent: 4801244 (1989-01-01), Stahl

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Seal assembly for internal mixers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Seal assembly for internal mixers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seal assembly for internal mixers will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-985657

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.