Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 8081058 | Thermally activated electrical interrupt switch A thermally activated electrical interrupt device incorporates a thermally activated portion engaging with an electrical interrupt portion. The thermally activated material expands when heated, causing an interrupt control rod to open an electrical contact. When the... | 12/20/2011 |
| 7652553 | Thermally activated electrical interrupt switch A thermally activated electrical interrupt device incorporates a thermally activated portion (110) engaging with an electrical interrupt portion (120). The thermally activated material (114) expands when heated, causing an interrupt control rod ... | 01/26/2010 |
| 6910342 | High temperature limit thermostat with manual lockout safety A manual reset high temperature limit thermostat is provided. The manual reset lockout feature is provided by a lock rod that is outwardly transitioned upon actuation of the thermostat when the sensed temperature reaches its high level limit. A manual reset reset sl... | 06/28/2005 |
