Oil Dipstick Illuminators (Patent No: 754932)
Inventor: Nesbitt, Harvey C.
Comments: see Calgary Herald, July 22/67, p. 12, gadget that facilitates checking the oil and relocating the dip stick, went into production, Nesco Manufacturing Company Dip Stick Lites
Issued March 21, 1967
OIL DIPSTICK ILLUMINATORS
Harvey C. Nesbitt, Calgary, Alberta, Canada
Application August 17, 1966, Serial No. 967,995
5 Claims—Class 240-57
1. Equipment for lighting a dipstick of the type removably insertible into a liquid, container having a dipstick opening in its top comprising a source of electric current, a fixture secured to said container top adjacent said dipstick opening, an electric lamp mounted on said fixture, a switch including a rigid contact msulatively mounted on said fixture and an electrically conductive spring insulatively mounted on said fixture, an electrically connected operatively to said lamp, said spring being biased toward and into engagement with said rigid contact, said current source being connected to effectively energize said lamp during engagement of said spring with said rigid contact, a switch arm movably mounted on the fixture and having one portion engaging said spring and another portion engaged and shifted by said dipstick upon insertion thereof into said dipstick opening, said switch arm in its shifted position holding said spring out of engagement with said rigid contact thereby disconnecting said source of current from said lamp.
2. Equipment as defined in Claim 1, said fixture being tubular and having an aperture for light from said lamp and a passageway for movement of said switch arm there-through, said light aperture and said switch arm passageway facing said dipstick in said dipstick opening.