Portable sensor for detecting bends of the back of a person past a predetermined lumbosacral angle
December 22, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3362023 3728675 Posture training device Activity monitor for ambulatory subjects Apparatus for detecting unauthorized egress by patient from position of confinement Signalling device for weight lifters Body position attitude indicator device Back incline indicator Fixture for actuating alarm upon change to upright position of recumbent patient Sleep posture monitor and alarm system InventorsAssigneeApplicationNo. 171849 filed on 12/22/1993US Classes:340/573.7, Posture alarm200/61.52Tilt responsiveExaminersPrimary: Williams, HezronAssistant: Oda, Christine K. Attorney, Agent or FirmForeign Patent References
International ClassG08B 021/00AbstractA torso attitude sensor for attachment to a human A torso at the waist. It senses when a human torso bends past a predetermined lumbosacral angle and sounds an alarm. The sensor may be worn on the left or right side of the waist because it includes two attitude responsive switches which are inclined in directions opposite to each other. The device further includes a counter for determining the number of times the electrical circuit is connected thereby providing the person, or his or her manager, with an indication of the number of times improper bending occurs. A timer is included with which actuation of an attitude responsive switch must persist for a minimum time interval before an alarm signal or excessive bending signal is generated. | |
