| US 7,525,055 B2 | ||
| Switch box for power tools with safety systems | ||
| Stephen F. Gass, Wilsonville, Oreg. (US); J. David Fulmer, Tualatin, Oreg. (US); and David A. Fanning, Vancouver, Wash. (US) | ||
| Assigned to SD3, LLC, Tualatin, Oreg. (US) | ||
| Filed on Apr. 11, 2006, as Appl. No. 11/401,774. | ||
| Application 11/401774 is a continuation of application No. 11/027322, filed on Dec. 31, 2004, abandoned. | ||
| Application 11/027322 is a continuation of application No. 09/676190, filed on Sep. 29, 2000, granted, now 7,055,417. | ||
| Application 09/676190 is a continuation of application No. 09/292221, filed on Aug. 13, 2001, granted, now 7,284,467. | ||
| Application 09/292221 is a continuation of application No. 09/292227, filed on Aug. 13, 2001, granted, now 7,308,843. | ||
| Application 09/292227 is a continuation of application No. 09/929234, filed on Aug. 13, 2001, granted, now 7,225,712. | ||
| Application 09/929234 is a continuation of application No. 09/929235, filed on Aug. 13, 2001, granted, now 7,350,444. | ||
| Application 09/929235 is a continuation of application No. 09/929236, filed on Aug. 13, 2001. | ||
| Application 09/929236 is a continuation of application No. 09/929237, filed on Aug. 13, 2001. | ||
| Application 09/929237 is a continuation of application No. 09/929238, filed on Aug. 13, 2001, abandoned. | ||
| Application 09/929238 is a continuation of application No. 09/929240, filed on Aug. 13, 2001, granted, now 7,100,483. | ||
| Application 09/929240 is a continuation of application No. 09/929242, filed on Aug. 13, 2001. | ||
| Application 09/929242 is a continuation of application No. 09/929425, filed on Aug. 13, 2001, granted, now 7,137,326. | ||
| Application 09/929425 is a continuation of application No. 09/929426, filed on Aug. 13, 2001, granted, now 7,210,383. | ||
| Application 09/929426 is a continuation of application No. 10/053390, filed on Jan. 16, 2002, granted, now 7,377,199. | ||
| Application 10/053390 is a continuation of application No. 10/100211, filed on Mar. 13, 2002. | ||
| Application 10/100211 is a continuation of application No. 10/146527, filed on May 15, 2002. | ||
| Application 10/146527 is a continuation of application No. 10/172553, filed on Jun. 13, 2002, granted, now 7,231,856. | ||
| Application 10/172553 is a continuation of application No. 10/189027, filed on Jul. 02, 2002. | ||
| Application 10/189027 is a continuation of application No. 10/189031, filed on Jul. 02, 2002, granted, now 7,171,879. | ||
| Application 10/189031 is a continuation of application No. 10/243042, filed on Sep. 13, 2002, granted, now 7,197,969. | ||
| Application 10/243042 is a continuation of application No. 10/292607, filed on Nov. 12, 2002, granted, now 7,077,039. | ||
| Application 10/292607 is a continuation of application No. 10/341260, filed on Jan. 13, 2003, abandoned. | ||
| Application 10/341260 is a continuation of application No. 10/345630, filed on Jan. 15, 2003. | ||
| Application 10/345630 is a continuation of application No. 10/643296, filed on Aug. 18, 2003, abandoned. | ||
| Application 10/643296 is a continuation of application No. 10/794161, filed on Mar. 04, 2004, granted, now 7,098,800. | ||
| Application 10/794161 is a continuation of application No. 10/923273, filed on Aug. 20, 2004, granted, now 7,350,445. | ||
| Application 10/923273 is a continuation of application No. 10/923282, filed on Aug. 20, 2004, abandoned. | ||
| Application 10/923282 is a continuation of application No. 10/923290, filed on Aug. 20, 2004. | ||
| Application 10/923290 is a continuation of application No. 10/932339, filed on Sep. 01, 2004, granted, now 7,290,472. | ||
| Application 10/932339 is a continuation of application No. 10/984643, filed on Nov. 08, 2004. | ||
| Application 10/984643 is a continuation of application No. 11/026006, filed on Dec. 31, 2004. | ||
| Application 11/026006 is a continuation of application No. 11/026114, filed on Dec. 31, 2004. | ||
| Application 11/026114 is a continuation of application No. 11/027254, filed on Dec. 31, 2004, abandoned. | ||
| Application 11/027254 is a continuation of application No. 11/027322, filed on Dec. 31, 2004, abandoned. | ||
| Application 11/027322 is a continuation of application No. 11/027600, filed on Dec. 31, 2004. | ||
| Application 11/027600 is a continuation of application No. 11/045972, filed on Jan. 28, 2005. | ||
| Application 11/045972 is a continuation of application No. 11/061162, filed on Feb. 18, 2005, granted, now 7,228,772. | ||
| Application 11/061162 is a continuation of application No. 11/098984, filed on Apr. 04, 2005, granted, now 7,353,737. | ||
| Application 11/098984 is a continuation of application No. 11/107499, filed on Apr. 15, 2005. | ||
| Application 11/107499 is a continuation of application No. 11/190111, filed on Jul. 25, 2005, granted, now 7,357,056. | ||
| Application 11/190111 is a continuation of application No. 11/208214, filed on Aug. 19, 2005. | ||
| Application 11/208214 is a continuation of application No. 11/218356, filed on Sep. 02, 2005. | ||
| Application 11/218356 is a continuation of application No. 11/256757, filed on Oct. 24, 2005. | ||
| Application 11/256757 is a continuation of application No. 11/348580, filed on Feb. 06, 2006. | ||
| Application 11/348580 is a continuation of application No. 11/353423, filed on Feb. 13, 2006. | ||
| Application 11/353423 is a continuation of application No. 11/395502, filed on Mar. 31, 2006. | ||
| Application 11/395502 is a continuation of application No. 11/401050, filed on Apr. 10, 2006. | ||
| Claims priority of provisional application 60/157340, filed on Oct. 01, 1999. | ||
| Claims priority of provisional application 60/182866, filed on Feb. 16, 2000. | ||
| Claims priority of provisional application 60/533598, filed on Dec. 31, 2003. | ||
| Prior Publication US 2006/0180451 A1, Aug. 17, 2006 | ||
| Int. Cl. H01H 9/26 (2006.01) | ||
| U.S. Cl. 200—50.37 | 9 Claims |
| 1. A switch box for use with a woodworking machine having a cutting blade, a motor adapted to move the blade, a control subsystem
adapted to control the motor, and a safety system to detect contact or proximity between a person and the blade, the switch
box comprising:
a housing;
a first switch at least partially supported by the housing and switchable between an “off” position and an “on” position in
which power is switched to the control subsystem and to the safety system so that the safety system can function as intended
if it is operable;
a second switch at least partially supported by the housing and configured to trigger the operation of the motor, where the
second switch will not trigger the operation of the motor until after the first switch has switched power to the control subsystem
and to the safety system; and
a light system that illuminates when the first switch is in the “on” position regardless of the operability of the safety
system, where the light system illuminates in a first manner to indicate if the safety system is operable and where the light
system illuminates in a second manner distinguishable from the first manner to indicate if the safety system is inoperable.
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