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US 4,302,664 AGranted
Contact lens aseptor
AssigneeRyder International Corporation
InventorsFrancis E. Ryder, Michael D. Thomas
Life of this patent
Estimating the term…
Abstract
A contact lens disinfector has a molded plastic casing with wells at opposite ends for receiving the respective lenses and the disinfecting solution. Caps are removably threaded onto the casing over the wells. A thermistor heater is embedded in the casing between the wells to provide a low temperature (60.degree. C. -80.degree. C.) heater for the solution for an extended heating cycle, thereby to inhibit deterioration of the lenses due to loss of transparency.
Claims5
A contact lens aseptor, comprising:
- an elongate molded plastic casing having a pair of wells at opposite ends thereof for receiving a contact lens and a quantity of disinfecting solution, each well opening to an end surface of the casing and removable cover means attachable to said casing at each end thereof to overlie the associated well opening, an electrical heater means integrally molded as a component of said casing and disposed intermediate said wells for supplying heat to each said well, the plastic material forming said casing being continuous from said heater to said wells, whereby said heater means is embedded in said casing, and said heater means being of a type having a resistance that increases as a function of temperature to limit the maximum operating temperature thereof, and power supply means affixed to said heater means and extending from said heater means to the exterior of said casing for connection to a source of power.
Dependencies are inferred from the claim text.