Non Accelerating Platen Detent
Original Publication Date: 1981-Aug-01
Included in the Prior Art Database: 2005-Feb-12
Illustrated above is a platen detent mechanism consisting of a spur gear 10 directly attached to the platen 12 and pivoting about point 14. The roller detent 16 is pivoted on a stud 18 mounted on slider 20. The slider 20 is mounted on bellcrank 22 by studs 24. Bellcrank 22 is pivoted on pin 24. Spring 26 provides force F(s) on slider 20, while spring 28 provides moment M(b) on bellcrank 22. Slots 30 limit the motion of slider 20 to approximately 40% of the tooth-to-tooth spacing on gear 10.