Conveyors: power-driven – Conveyor section – Screw
Patent
1989-05-09
1991-04-02
Skaggs, H. Grant
Conveyors: power-driven
Conveyor section
Screw
198677, B65G 3332
Patent
active
050040952
ABSTRACT:
Conveying apparatus for use in an environment having significant variations in temperature, and having a molded plastic screw conveyor on a metal drive shaft is disclosed. The molded plastic screw conveyor includes a non-circular axial aperture which receives a cooperating drive shaft with a coefficient of expansion different than the plastic screw conveyor. The cross-sectional shapes of the drive shaft and the axial aperture extending through the plastic screw conveyor are such that rotation of the drive shaft results in rotation of the plastic screw conveyor. However, axial motion between the plastic screw conveyor and the drive shaft can occur to accommodate variations in length due to changes in temperature. A journal plug or end means is also included which may receive rotational forces from a motor or other source. The journal plug is joined to the drive shaft such that rotation of the journal plug results in rotation of the drive shaft and consequently in rotation of the plastic screw conveyor.
REFERENCES:
patent: 1829453 (1931-10-01), Parker
patent: 2226078 (1940-12-01), Spahn
patent: 2571036 (1951-10-01), Heyne et al.
patent: 2588901 (1952-03-01), Weikart
patent: 2721647 (1955-10-01), Witworth
patent: 3104757 (1963-09-01), Dougherty et al.
patent: 3194385 (1965-07-01), Barnese
patent: 3323781 (1967-06-01), Murdock
patent: 3333873 (1967-08-01), Triplett
patent: 3664444 (1972-05-01), Henson
patent: 3705644 (1972-12-01), Kawchitch
patent: 4078276 (1978-03-01), Nunes
patent: 4152086 (1979-05-01), Achenbach et al.
patent: 4691818 (1987-09-01), Weber
Greve Christopher G.
Lapeyre James M.
Weber Peter G.
Brown Laurence R.
Reichard Dean A.
Skaggs H. Grant
The Laitram Corporation
LandOfFree
Apparatus for use in variable operating temperatures does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for use in variable operating temperatures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for use in variable operating temperatures will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-322524