“Negative Spring: New Tool for Engineers”, Business Week, Jul. 2, 1949, 40-42. |
AMETEK Hunter Spring Products, “Stock and custom-designed spring-powered devices for the design engineer”, Bulletin FS-202, 1995, 12 pages. |
Votta, Jr., F.A., “Constant-Force Springs for High Output at Short Deflection”, Machine Design Magazine, 102-103. |
The Neg'ator® Spring . . . , “Two Neg'ators Carry 83% of Sliding-Assembly Weight to Provide Specified Belt Tension on Grinder,” “Neg'ators Exert Constant Operating Force Through 26½ of Travel to Simplify Vending Machine,” and “The Neg'ator Counterbalances—A Fluorescent Lighting Fixture”, 3 pages. |
Neg'ators Springs Counterbalance Without Mass, Simplify Linkages, Save Space, “Oven Doors Counterbalanced with Neg'ator Extension Springs,” and “Neg'ator Springs Simplify Counterbalancing of RCA Included Amplifier”, 1 page. |
Neg'ator Constant-Torque Spring Motor and RW Laminar Spring description pages, 2 pages. |
The Neg'ator® Sketchbook, Hunter Spring Company, Lansdale, PA, 2 pages. |
Mounting Considerations page containing details on “Cavity Mounting,” “Multiple Mountings,” and “Free End Engagement”, 1 page. |
Neg'ator® Constant Force Extension Springs Design Procedure, 1 page. |
The Neg'ator® Spring, “The Neg'ator Spring Used as a Counterbalance”, 1 page. |
More Applications, diagrams of Retraction, Door Closer, Printed Tapes, Morot Brush Springs, Tensioning and Loading, and Merchandise Dispenser, 1 page. |
AMETEK, information regarding “Neg'ator® Constant Force Extension Springs, The Reel Experts, Air/Fluid Hose Reels, Electrical Cord Reels, Cable Reels, and Stock Reels”, Hunter Spring Products, 4 pages. |