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Locking device for an oven door

  • US 4,952,284 A
  • Filed: 07/28/1988
  • Issued: 08/28/1990
  • Est. Priority Date: 08/03/1987
  • Status: Expired due to Fees
First Claim
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1. A locking device for an oven door, wherein the oven extends horizontally and includes an interior defined by interior walls and a door opening which is surrounded by door frame means, the door frame means includes an external sealing surface, and the oven door includes a sealing unit having peripheral edge portions for overlying and making sealing contact with the sealing surface of the door frame means, said locking device comprising:

  • support frame means for generally surrounding the sealing unit to overlie the peripheral edge portions thereof;

    means for anchoring said support frame means to the door frame means with the peripheral edge portions disposed therebetween;

    a plurality of contact pressure elements disposed about said support frame means for being in alignment with the peripheral edge portions;

    means for causing said contact pressure elements to produce a sealing force on the peripheral edge portions to produce the sealing contact with the sealing surface of the door frame means;

    said support frame means including a pair of vertical support frame elements which are for being respectively located at opposite sides of the sealing unit and a pair of horizontal support frame elements which are for being respectively located at the top and at the bottom of the sealing unit;

    said vertical support frame elements and said horizontal support frame elements having adjacent corresponding ends which are joined;

    said plurality of contact pressure elements being evenly disbursed about said vertical support frame elements and said horizontal support frame elements;

    each of said contact pressure elements including an outer end, an intermediate portion and an inner end;

    each of said contact pressure elements being threadably mounted at said intermediate portion thereof to its corresponding one of said vertical support frame element and said horizontal support frame element so that rotation of said outer end of said contact pressure element produces axial movement of said inner end of said contact pressure element;

    said outer end of said contact pressure element including a sprocket wheel; and

    chain drive means connecting said sprocket wheels of said contact pressure elements for corresponding relative rotation thereof.

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