초록 ▼

Two lamp sockets (40, 42) on a wiring board (32) behind a switch assembly (18) have identical geometries. Each comprises a through-hole with a polarizing feature. Plural discrete contact pads (44, 46, 48, 50) are disposed on the board surface spaced apart around the margin of each through-hole. Plur

Two lamp sockets (40, 42) on a wiring board (32) behind a switch assembly (18) have identical geometries. Each comprises a through-hole with a polarizing feature. Plural discrete contact pads (44, 46, 48, 50) are disposed on the board surface spaced apart around the margin of each through-hole. Plural discrete conductor traces (52, 54, 56, 58) are printed on the board surface to run from the respective contact pads. Each socket can accept either a first model (66) or a second model (68) of lamp assembly to make either socket a status indicator for the switch assembly or a nighttime illumination socket. A common wiring board can thereby serve different requirements for the locations of status indicator and nighttime illumination lamps.

대표청구항 ▼

[ What is claimed is:] [1.] A dual function lamp socket comprising:a substantially rigid wiring board containing a through-hole that has a perimeter margin bounding an opening;plural discrete contact pads disposed on the board surface spaced apart around the margin of the through-hole;plural discret

[ What is claimed is:] [1.] A dual function lamp socket comprising:a substantially rigid wiring board containing a through-hole that has a perimeter margin bounding an opening;plural discrete contact pads disposed on the board surface spaced apart around the margin of the through-hole;plural discrete conductor traces that run on the board surface from the plural discrete contact pads;the perimeter margin of the through-hole having a polarizing feature that allows a base of a first lamp assembly model that has a matching polarizing feature to be inserted into the through-hole only when the respective polarizing features are in unique circumferential registry and after having been so inserted, the first lamp assembly model to be circumferentially indexed a fixed distance to an installed position where a pair of contacts on the base of the first lamp assembly model are in contact with a first pair of the contact pads to place a lamp of the first lamp assembly model in circuit across the first pair of contact pads;the plural discrete contact pads comprising a second pair that is distinct from the first pair and disposed not to place the lamp of the first lamp assembly model in circuit across the second pair of contact pads when the base of the first lamp assembly model is in the installed position, but instead to place the lamp of a second lamp assembly model in circuit across the second pair of contact pads when a base of the second lamp assembly model that has the same polarizing feature as that of the first lamp assembly model has been inserted into the through-hole and the second lamp assembly model indexed the fixed distance to the installed position and not to place the lamp of the second lamp assembly model in circuit across the first pair of contact pads when the second lamp assembly model is in the installed position.