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US 6,499,191 B1Granted
Knob with a composite light pipe having a colored face and a light pipe
AssigneeThe Grigoleit Company
InventorRobert K. Howie, Jr.
Life of this patent
Estimating the term…
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AssigneeThe Grigoleit Company
InventorRobert K. Howie, Jr.
Estimating the term…
A composite knob having a plastic core with a front wall. A narrow passage or slit extends through the front wall of the core. A thin, elongated planar light pipe formed of a first piece of a clear light transmitting plastic and a second piece of a colored light transmitting plastic overlay attached to the light emitting edge or face of the first piece of clear light transmitting plastic. The colored plastic overlay is secured to the first piece of clear light transmitting plastic by pairs of notches and hooks which interlock during the molding of the overlay to the clear portion. The light pipe is positioned in the plastic core with the colored overlay located in the narrow passage and visible through the core from the exterior of the knob. In another embodiment, a window is formed in the front wall of a translucent plastic core. The light pipe is positioned in the translucent plastic core so as to transmit light through the window of said translucent plastic core.
A composite knob including:
A composite knob including:
A composite light pipe having an elongated first portion formed of a clear light transmitting plastic with a light emitting face at one end thereof, and a second portion formed of a colored light transmitting plastic overlaid on said light emitting face of said first portion,
Dependencies are inferred from the claim text.