(12) United States Patent Reed et a]. US008671509B2 US 8,671,509 B2 *Mar. 18, 2014 (10) Patent N0.: (45) Date of Patent: (54) (75) (73) (21) (22) (65)
US. Patent Mar. 18, 2014 Sheet 8 0f 22 US 8,671,509 B2 FIG. I] 200 205 EORCE APPLIED TO LEVER 210 LEVER PIVOTS ABOUT CONNECTION POINT 215 LEVER ENGAGE
US. Patent Mar. 18, 2014 Sheet 9 0f 22 US 8,671,509 B2 FIG. 13 30 FIG. 12
US 8,671,509 B2 US. Patent Mar. 18, 2014 Sheet 10 0f 22 mmPmmT/ZOU Draw A 2“ av Q; \wwEmDw MUTE/Om saw 3 .Ubm mSDDOE 23m mew
US. Patent Mar. 18, 2014 Sheet 13 0f 22 US 8,671,509 B2 605 FIG. I 7 V _ f/ 000 ENTER SLEEP [J MODE v 6] 0 TURN OFF DISCHARGE /\/ CONTROL MODULE I 61
US. Patent Mar. 18, 2014 Sheet 14 0f 22 US 8,671,509 B2 630 FIG. 18 ENTER WAKE MODE 600 DEVICE POWER SWITCH ON? YES 665 i /J ENTER NORMAL DISCHARGE MO
US. Patent Mar. 18, 2014 Sheet 15 0f 22 US 8,671,509 B2 20 870 920 FIG. 19 815
US. Patent Mar. 18, 2014 Sheet 16 0122 US 8,671,509 B2 S5
US. Patent Mar. 18, 2014 Sheet 17 0122 US 8,671,509 B2
US 8,671,509 B2 Page 2 (56) References Cited U.S. PATENT DOCUMENTS 5,004,276 A 4/1991 Hanley 5,014,388 A 5/1991 SchiaZZaet al. 5,101,532 A 4/1992 Dyso
US. Patent Mar. 18, 2014 Sheet 18 0f 22 US 8,671,509 B2 FIG. 26 890 895
US. Patent Mar. 18, 2014 Sheet 1 0122 US 8,671,509 B2
US. Patent Mar. 18, 2014 Sheet 2 0f 22 US 8,671,509 B2 FIG‘ 2 55
US. Patent Mar. 18, 2014 Sheet 3 0f 22 US 8,671,509 B2 FIG. 3 50 135
US. Patent Mar. 18, 2014 Sheet 4 0f 22 US 8,671,509 B2 FIG. 4 50
US. Patent Mar. 18, 2014 Sheet 5 0f 22 US 8,671,509 B2 FIG. 5 75 100 FIG. 6
US. Patent Mar. 18, 2014 Sheet 6 0f 22 US 8,671,509 B2 FIG. 8 [J 140 FIG. 7
US. Patent Mar. 18, 2014 Sheet 7 0f 22 US 8,671,509 B2 so a: .2:
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