1. 6/4/2016 “Selbsteinstellendes Kettenrad”, Karl Herkenrath 1

2. PATENT “Self-Adjusting Chain Sprocket” Patent Document EP 12007544.5 Karl Herkenrath 2

3. 6/4/2016 “self-adjusting chain sprocket”, Karl Herkenrath 3 Contents rSrStarting Situation and Problem Description rMrMotivation and Objective rFrFunctional Principle / Schematic Representation rCrComparison „self-adjusting“ to „conventional“ rSrSelf-Adjustment of the Sprocket Tooth Segments rRrReduction of Wear rCrContact Details

4. 6/4/2016 “self-adjusting chain sprocket”, Karl Herkenrath 4 Starting Situation and Problem Description

5. 6/4/2016 “self-adjusting chain sprocket”, Karl Herkenrath 5  STARTING SITUATION Chains and sprockets in conveyor systems are subject to constant wear and tear not only requiring the chain and sprocket to be regularly replaced but also producing additional costs. Another weak point of chain drives is the sometimes high noise generation. Problem: rcrconstant wear rnrnoise generation rhrhigh costs Costs due to wear and tear

6. 6/4/2016 “self-adjusting chain sprocket”, Karl Herkenrath 6 Motivation and Objective

7. 6/4/2016 “self-adjusting chain sprocket”, Karl Herkenrath 7  Motivation The problems caused by wear and tear and noise generation as well as the resulting costs can be considerably reduced by the „self-adjusting chain sprocket“. Objective: r reduction of wear r noise reduction r reduced costs

8. 6/4/2016 “self-adjusting chain sprocket”, Karl Herkenrath 8 Functional Principle / Schematic Representation

9. 6/4/2016 “self-adjusting chain sprocket”, Karl Herkenrath 9 stress caused by chain force F =  Functional Principle/Schematic Representation distribution on two tooth segments Each sprocket tooth segment is equipped with a pivot bearing below the centre of the tooth as well as cavities on both sides to hold the transmission springs. compensation of tooth segments with no load Following tooth segments will be exposed to the same load

10. 6/4/2016 “self-adjusting chain sprocket”, Karl Herkenrath 10 Comparison „self-adjusting“ to „conventional“

11. 6/4/2016 “self-adjusting chain sprocket”, Karl Herkenrath 11 conventional chain sprocket rprpitch extension (of 2%) due to wear based on almost the same load. rdrdistribution of chain force on several engaged tooth segments. rlrlow wear and tear based on the same chain and load.  Comparison self-adjusting and conventional Round link chain load based on a localized contact with a tensile force of 120kN on the first engaging tooth. self-adjusting chain sprocket

12. 6/4/2016 “self-adjusting chain sprocket”, Karl Herkenrath 12 Self-Adjustment of the Tooth Segments

13. 6/4/2016 “self-adjusting chain sprocket”, Karl Herkenrath 13 pitch error sprocket & chain due to the self-adjustment of the tooth segments the sprocket will adjust to the chain pitch.  Self-Adjustment of the Tooth Segments flank form, flank lines pressure angle, concentricity axle position, deflection damages tooth form, chain spring compensation between tooth segments. adaptation to the break-in conditions of the chain. in the case of double strand chains there is a load compensation between the two chain strands. loads will be distributed across the engaged tooth segments. Each tooth segment of the chain sprocket „self-“adjusts to the respective conditions.

14. 6/4/2016 “self-adjusting chain sprocket”, Karl Herkenrath 14 Reduction of Wear

15. 6/4/2016 “self-adjusting chain sprocket”, Karl Herkenrath 15  Reduction of wear  reduced load on the pins, chains and chain links. r noise-reduced due to spring compensation, low break-in shock. r maintenance-free due to self-adjustment of the chain sprocket.

16. 6/4/2016 “self-adjusting chain sprocket”, Karl Herkenrath 16 Contact Details & Contact Person

17. 6/4/2016 “Selbsteinstellendes Kettenrad”, Karl Herkenrath 17  Contact Details & Contact Person Karl Herkenrath In der Hardt 23 D-56746 Kempenich Tel. 02655 / 942889 Fax 02655 / 942887 E-Mail: info@selbsteinstellendes-kettenrad.com Patent EP 12007544.5 Patent Owner: Karl Herkenrath