Description: Rare Donald F. Wilkes Rolamite postal scale, Data-Link corporation 1970 Good used condition, in original box, as pictured, working condition. This is an exclusive letter scale. Instead of linkages and sliding pivots in bearings, a rolling construction is applied. Rolling friction results in far less losses compared to sliding friction. In de period 1966-1975 an extensive variety of applications was invented for mechanisms with rolls and thin foil bands. Donald F. Wilkes is the person named most frequently with these "Roller-band devices" later better known under the name Rolamite. He patented it June 1969, with patent number 3,452,175. He was an engineer at Sandia National Laboratory in Albuquerque, New Mexico, USA. The design of the postal scale is made by Carleton W. Sprague. The patent was granted in 1971 in America with the number 3,621,928. This US-patent number is molded into SBB1
Price: 49.99 USD
Location: Bothell, Washington
End Time: 2024-11-08T17:48:30.000Z
Shipping Cost: 0 USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: Data-Link Corperation
