Adjustable air flow damper for a luminaire

• US 3,312,160 A
• Filed: 12/30/1965
• Issued: 04/04/1967
• Est. Priority Date: 12/30/1965
• Status: Expired due to Term

• Current Assignee: Cooper Industries, Inc. (Eaton Corporation PLC.)
• Original Assignee: Carle E. Rackley
• Inventors: Rackley, Carle E.
• Application Number:
  US04/517,659
• Time in Patent Office: 460 Days
• US Class Current: 454/248
• CPC Class Codes: F24F 13/078 combined with lighting fixtures
• CPC Class Codes: F24F 13/12 built up of sliding members

Claims

1. AN AIR-HANDLING LUMINAIRE COMPRISING:

A HOUSING HAVING A TOP MEMBER AND WALLS AFFIXED THERETO, A BOTTOM LIGHT OPENING GENERALLY DEFINED BY SAID WALLS;

AN AT LEAST PARTIALLY LIGHT TRANSMITTING CLOSURE MEMBER DISPOSED WITHIN SAID BOTTOM OPENING AND FORMING AN ENCLOSURE WITH SAID HOUSING;

LAMPHOLDER MEANS MOUNTED ON SAID HOUSING AND ADAPTED TO SUPPORT HEAT GENERATING LIGHT-SOURCE MEANS WITHIN SAID ENCLOSURE;

SAID ENCLOSURE HAVING AN AIR ENTRANCE MEANS PROVIDED ALONG AT LEAST ONE EDGE OF SAID LIGHT TRANSMITTING CLOSURE MEMBER;

A PORTION OF SAID HOUSING TOP MEMBER HAVING A PLURALITY OF AIR EXIT SLOTS ARRANGED GENERALLY PARALLEL WITH ONE ANOTHER WITH BRIDGE PORTIONS FORMED THEREBETWEEN;

A UNITARY ADJUSTABLE DAMPER POSITIONED EXTERIOR TO SAID HOUSING, SAID DAMPER COMPRISING A GENERALLY PLANAR DAMPER BASE PORTION AND A PLURALITY OF RAISED SPACED DAMPER COVER PORTIONS;

SAID DAMPER BASE PORTION PROVIDED WITH A PLURALITY OF GENERALLY PARALLEL AIR EXIT SLOTS AND BRIDGE PORTIONS WHICH GENERALLY CORRESPOND IN SHAPE AND SPACING TO THE EXIT SLOTS AND BRIDGE PORTIONS PROVIDED IN SAID HOUSING TOP MEMBER, SAID BRIDGE PORTIONS OF SAID HOUSING TOP MEMBER AND SAID BRIDGE PORTIONS OF SAID DAMPER BASE PORTION CONTINGUOUSLY AND SLIDABLY ENGAGING TO PERMIT THE ADJUSTMENT OF OVERLIE BETWEEN THE EXIT SLOTS IN SAID HOUSING TOP MEMBER AND THE EXIT SLOTS IN SAID DAMPER BASE PORTION;

SAID DAMPER COVER PORTIONS RAISED A PREDETERMINED DISTANCE DIRECTLY OVER AND COVERING THE AIR EXIT SLOTS PROVIDED IN SAID DAMPER BASE PORTION TO PREVENT FOREIGN MATTER FROM FALLING THROUGH THE OVERLYING EXIT SLOTS PROVIDED IN SAID DAMPER BASE PORTION AND IN SAID HOUSING TOP MEMBER INTO SAID ENCLOSURE FORMED WITHIN SAID LUMINAIRE;

AND MEANS FOR PERMITTING LIMITED SLIDABLE MOVEMENT OF SAID DAMPER ON SAID HOUSING TOP MEMBER FROM A FULL OPEN POSITION WHERE THE SLOTS PROVIDED IN SAID DAMPER BASE PORTION SUBSTANTIALLY OVERLIE THE SLOTS PROVIDED IN SAID HOUSING TOP MEMBER TO A FULL CLOSED POSITION WHERE THE SLOTS PROVIDED IN SAID HOUSING TOP MEMBER ARE SUBSTANTIALLY OVERLAPPED BY SAID BRIDGES IN SAID DAMPER BASE PORTION.