I was performing a Google News Archives search on "Eureka canister" and one of the results I found was:
A Eureka 1428DT upright has the post-1974 logo on the bag but still has the pre-1974 logo on the main unit. I suspect this uses the 3.5 or 4 amp "blender" vertical motor. The two canisters - the 3710 and the 671 Roto-Matic Power-Team - still bear the pre-1974 logo. The particular newspaper article in the link is dated October 15, 1981, for your convenience.
I'd like to break down what Eureka model series was used in terms of product quality: economy, step-up, mid-range and top-of-the-line. All Eureka uprights of the '70s-'80s used vertically-mounted motors; the economy and step-up units used what some of you describe as "blender" motors (generally 4 amps or less), while those in the mid-range and TOL use the "pancake" motors (generally 5 amps or greater).
~Ben
http://news.google.com/newspapers?i...IBAJ&pg=5593,4976365&dq=eureka+canister&hl=en
A Eureka 1428DT upright has the post-1974 logo on the bag but still has the pre-1974 logo on the main unit. I suspect this uses the 3.5 or 4 amp "blender" vertical motor. The two canisters - the 3710 and the 671 Roto-Matic Power-Team - still bear the pre-1974 logo. The particular newspaper article in the link is dated October 15, 1981, for your convenience.
I'd like to break down what Eureka model series was used in terms of product quality: economy, step-up, mid-range and top-of-the-line. All Eureka uprights of the '70s-'80s used vertically-mounted motors; the economy and step-up units used what some of you describe as "blender" motors (generally 4 amps or less), while those in the mid-range and TOL use the "pancake" motors (generally 5 amps or greater).
~Ben
http://news.google.com/newspapers?i...IBAJ&pg=5593,4976365&dq=eureka+canister&hl=en