Apparatus for illuminating a keyhole

Claim 1

A conversion apparatus to adapt an unlighted lock having a cylinder with a flange and a front face to a lock selectively illuminable using a battery, said apparatus comprising: an annular outer housing having a housing front wall and an aperture dimensioned to accept the lock cylinder therein such that the cylinder front face locates within said outer housing, said outer housing further having a rear wall positionable to contact a door; an annular body positioned within said outer housing and held in place therein by said front and rear walls, said body having an aperture dimensioned to accept the lock cylinder therein and a shoulder to engage the flange of the lock cylinder and hold the cylinder front face recessed from the housing front wall, said body further having a chamber dimensioned to accept the battery; illumination means positioned within said outer housing for illuminating the cylinder front face; and switch means supported by said outer housing for selectively energizing said illumination means from the battery.

Claim 8

An apparatus for selectively illuminating a lock cylinder having a flange and a front face using a battery, said apparatus comprising: a conductive annular outer housing having a housing front wall and having an aperture dimensioned to accept the lock cylinder therein such that the cylinder front face locates within said outer housing; an annular light ring positioned within said outer housing adjacent the inner side of said housing front wall, said annular light ring having an aperture dimensioned to accept the lock cylinder; a lamp within said light ring selectively having current flowing therein by way of first and second lamp terminals, said lamp emitting light onto said cylinder front face in response to said current flow, said first lamp terminal pinched between said light ring and said outer housing whereby an electrical connection between said outer housing and said lamp is formed; an annular body positioned within said outer housing adjacent said light ring and having an aperture dimensioned to accept the lock cylinder therein and a shoulder to engage the flange of the lock cylinder and hold the cylinder front face recessed from the housing front wall, said body further having a chamber dimensioned to accept the battery; switch means connected to said second lamp terminal for selectively enabling current flow through said lamp; and conductor means for connecting said outer housing to a first terminal of the battery and for connecting said switch means to a second terminal of the battery.

Claim 9

An apparatus for selectively illuminating a lock cylinder having a flange and a front face using a battery, said apparatus comprising: a conductive annular outer housing having a housing front wall and having an aperture dimensioned to accept the lock cylinder therein such that the cylinder front face locates within said outer housing; an annular light ring positioned within said outer housing adjacent the inner side of said housing front wall, said annular light ring having an aperture dimensioned to accept the lock cylinder; a lamp within said light ring selectively having current flowing therein by way of first and second lamp terminals, said lamp emitting light onto said cylinder front face in response to said current flow, said first lamp terminal pinched between said light ring and said outer housing whereby an electrical connection between said outer housing and said lamp is formed; an annular body positioned within said outer housing adjacent said light ring and having an aperture dimensioned to accept the lock cylinder therein and a shoulder to engage the flange of the lock cylinder and hold the cylinder front face recessed from the housing front wall, said body further having a chamber dimensioned to accept the battery; switch means connected to said second lamp terminal for selectively enabling current flow through said lamp; and conductor means for connecting said outer housing to a first terminal of the battery and for connecting said switch means to a second terminal of the battery.