NESTING AIR FILTERS

• Main Author: KERSHAW E
• Format: Patent
• Language: English
• Published: 15.10.1981
• Subjects: GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS; TRANSPORTING

In a nesting arrangement for air filters, rectangular filter frames are provided with notches or recesses which allow a plurality of filters to nest together in an overlapping, laterally offset relationship to conserve space for shipment or storage. Air filters (30, 60, 110) comprise fibrous filter elements (32, 62, 112) and rectangular frames (34, 64, 114) which support the marginal edges of filter elements (32, 62, 112). Recesses (54, 56), (82, 84), (134, 136) are formed in the front faces of the frames (34, 64, 114) adjacent to diagonally opposite corners which permit the filters (30, 60, 110) to be stacked with each filter nested with one or both of its neighbors. Alternatively, recesses (54, 56) may be placed adjacent corners of the frame (34) on the same frame member (36). In other embodiments, a pair of recesses (82, 82), (85, 85), (88, 88) are placed adjacent a corner of frames (64) and a pair of recesses (84, 84), (87, 87) are placed adjacent the diagonally opposite corner on the front or back face of frames (64) whereby a plurality of filters (60) are nested. Dans un dispositif d'emboitement pour des filtres a air, des cadres rectangulaires de filtres sont pourvus d'entailles ou d'evidements qui permettent d'emboiter une pluralite de filtres se chevauchant les uns les autres et decaler lateralement entre eux pour garder un espace facilitant le transport ou le stockage. Les filtres a air (30, 60, 110) comprennent des elements filtrants fibreux (32, 62, 112) et des cadres rectangulaires (34, 64, 114) qui supportent les bords des elements filtrants (32, 62, 112). Des evidements (54, 56), (82, 84), (134, 136) sont formes dans les faces frontales des cadres (34, 64, ,74) adjacents aux coins diagonalement opposes qui permettent d'empiler les filtres (30, 60, 110) chaque filtre s'emboitant avec son ou ses deux voisins. Dans un autre mode de realisation, des evidements (54, 56) peuvent etre formes adjacents aux coins du cadre (34) sur le meme element de cadre (36). Dans d'autres modes de realisation, une paire d'evidements (82, 82), (85, 85), (88, 88) sont formes adjacents a un coin des cadres (64) et une paire d'evidements (84, 84), (87, 87) sont formes adjacents au coin diagonalement oppose sur la face avant ou arriere des cadres (64) de maniere a permettre l'emboitement d'une pluralite de filtres (60).