Waste water purification system with complementary interlocking germicidal lamp and socket construction

A waste water purification system comprising

• a housing defining a flow chamber through which water to be treated flows,
• said chamber having a water inlet and a water outlet,
• a plurality of ultraviolet germicidal lamps disposed in said flow chamber in the flow path of the water to be treated,
• each of said germicidal lamps including an elongated envelope,
• said envelope being sealed on at least one end by an end cap,
• a plurality of contact pins projecting outwardly of said end cap,
• said plurality of contact pins including at least one pair of spaced apart locking contact pins,
• said locking contact pins including a shank portion and a connected enlarged head end portion,
• a socket for receiving said lamp for effecting an electrical connection,
• said socket including a transverse wall having opposed apertures for receiving said locking contact pins,
• said opposed apertures having a keyhole shape with an enlarged portion and a small end portion,
• the enlarged portions of said aperture being diametrically opposed,
• said transverse wall having a subjacent undercut disposed about the small end of said aperture,
• a floating contact disposed below each of said apertures,
• and a spring means biasing said floating contact toward said aperture whereby said lamp is attached by axially inserting the enlarged head end of the contact pins into said enlarged portion of said aperture depressing said floating contact and effecting relative rotation of said lamp to dispose the shank portion of said contact pins in the small end portions of said apertures,
• whereby said spring bias said enlarged head end of said contact pin to seat in said undercut to lock said lamp within said socket in electrical contact.

A germicidal lamp and complementary socket assembly for use in a water purification system comprising

• a germicidal lamp,
• a plurality of contact pins projecting from one end of said lamp,
• a complementary socket for receiving said contact pins,
• and means for maintaining said lamp and socket in positive interlocking relationship and in electrical contact within said socket in the assembled position so as to prohibit said lamp from inadvertently electrically disconnecting from said socket.

A germicidal lamp and complementary socket assembly comprising

• a germicidal lamp having an end cap,
• a plurality of contact pins projecting from said end cap,
• said contact pins having an enlarged locking head end,
• a socket for receiving said lamp,
• said socket including transverse wall,
• apertures formed in said transverse wall for receiving each of said contact pins,
• a contact means associated with each of said apertures to effect electrical connection with said contact pins received in each of said apertures, and
• said apertures including means for positively locking said enlarged locking head end of said contact pins to said socket when said lamp and socket are in the assembled position.

A germicidal lamp and complementary socket assembly for use in a waste water purification system comprising

• a germicidal lamp having an elongated envelope for containing opposed electrodes,
• an end cap sealing the end of said elongated envelope,
• a plurality of contact pins projecting out from said end cap,
• said plurality of contact pins including a first pair of oppositely disposed locking contact pins adapted to be electrically connected to one electrode,
• and a second pair of contact pins adapted to be electrically connected to another electrode,
• said first pair of locking pins each including a shank portion and a connected enlarged head end portion,
• a complementary socket for receiving said germicidal lamp,
• said socket including a base having a transversely extending wall,
• a plurality of apertures formed in said transversely extending wall,
• said plurality of apertures including a first pair formed in the shape of a keyhole slot having an enlarged end portion and a small end portion, and a second pair of non-keyhole shape,
• each of said first and second pairs of apertures being diametrically and oppositely opposed,
• an electrical contact means associated with each of said apertures for engaging said contact pin in electrical contact in the assembled position of said lamp and socket, whereby said lamp and socket are positively locked by the interlocking of said locking contact pins in said keyhole slots.

A germicidal lamp and socket assembly comprising

• a germicidal lamp having an elongated envelope adapted for encasing therein a pair of electrodes,
• an end cap for sealing the end of said envelope,
• said end cap having longitudinally spaced apart end faces,
• a first pair of locking contact pins projecting outwardly from one of said end faces,
• each of said first pair of locking contact pins including a shank portion and a connected enlarged head end portion,
• a second pair of contact pins projecting form another of said spaced apart faces of said end cap,
• a complementary socket,
• said complementary socket including a member having faces complementing the offset faces of said end cap,
• said member having a plurality of apertures formed therein for receiving said first and second pair of contact pins,
• said plurality of apertures including a first pair formed in the shape of a keyhole slot having an enlarged end portion and a small end portion,
• said enlarged end portion of said first pair of apertures being diametrically opposed,
• said plurality of apertures including a second pair of apertures,
• a bore disposed in alignment with each of said apertures,
• a floating contact displaceably disposed in each of said bores,
• a spring means disposed in each of said bores for normally biasing said contacts therein,
• whereby said lamp is positively locked to said socket by inserting said lamp into said socket by aligning the enlarged end of said locking contact pins with the enlarged end portion of said keyhole shaped slot and effecting rotation of said lamp relative to said socket to position the shank portion of said locking pins in the small end of said keyhole slots.

A germicidal lamp and complementary socket comprising

• a germicidal lamp having an end cap,
• a plurality of contact pins projecting from said end cap,
• a locking cylinder connected to said end cap,
• said locking cylinder including a locking groove circumscribing said cylinder,
• opposed channels in connection with said locking groove,
• a complementary socket,
• a collar rotatably journalled to said socket,
• opposed latch projections connected to said collar arranged to be disposed in alignment with said channels,
• whereby said lamp, upon insertion of said contact pins in said socket, is mechanically locked thereto by rotation of said collar relative to said locking cylinder.

A germicidal lamp and complementary socket comprising

• a germicidal lamp having an end sealing cap and projecting contact pins,
• a latch pin projecting laterally from said end cap,
• a complementary socket,
• said socket including a cylindrical base,
• spring contacts disposed in said base to engage in electrical contact with said contact pins in the assembled portion of said lamp,
• and a bayonet slot formed in said base for engaging said latch pin in the assembled position for positively locking said lamp to said base.