Alarm toe switch

Patent · Fri Jan 01 00:00:00 EST 1982

OSTI ID:864344

Ganyard, Floyd P ^[1]

---

1. Albuquerque, NM

An alarm toe switch inserted within a shoe for energizing an alarm circuit n a covert manner includes an insole mounting pad into which a miniature reed switch is fixedly molded. An elongated slot perpendicular to the reed switch is formed in the bottom surface of the mounting pad. A permanent cylindrical magnet positioned in the forward portion of the slot with a diameter greater than the pad thickness causes a bump above the pad. A foam rubber block is also positioned in the slot rearwardly of the magnet and holds the magnet in normal inoperative relation. A non-magnetic support plate covers the slot and holds the magnet and foam rubber in the slot. The plate minimizes bending and frictional forces to improve movement of the magnet for reliable switch activation. The bump occupies the knuckle space beneath the big toe. When the big toe is scrunched rearwardly the magnet is moved within the slot relative to the reed switch, thus magnetically activating the switch. When toe pressure is released the foam rubber block forces the magnet back into normal inoperative position to deactivate the reed switch. The reed switch is hermetically sealed with the magnet acting through the wall so the switch assembly S is capable of reliable operation even in wet and corrosive environments.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• DOE Contract Number: AC04-76
• Assignee: United States of America as represented by Department of Energy (Washington, DC)
• Patent Number(s): US 4350853
• OSTI ID: 864344
• Country of Publication: United States
• Language: English

Related Subjects

alarm
toe
switch
inserted
shoe
energizing
circuit
covert
manner
insole
mounting
pad
miniature
reed
fixedly
molded
elongated
slot
perpendicular
formed
bottom
surface
permanent
cylindrical
magnet
positioned
forward
portion
diameter
thickness
causes
bump
foam
rubber
block
rearwardly
holds
normal
inoperative
relation
non-magnetic
support
plate
covers
minimizes
bending
frictional
forces
improve
movement
reliable
activation
occupies
knuckle
space
beneath
scrunched
moved
relative
magnetically
activating
pressure
released
position
deactivate
hermetically
sealed
acting
wall
assembly
capable
operation
wet
corrosive
environments
switch assembly
corrosive environment
hermetically sealed
bottom surface
support plate
reed switch
switch activation
foam rubber
corrosive environments
elongated slot
toe switch
hermetically seal
frictional forces
operative relation
alarm toe
/200/36/335/340/