| 摘要 |
<p>A disposable oil filter (10) comprises a plate-like member (24) having a depending solid skirting flange (26) surrounding a peripheral edge of said member, a central aperture (36) formed in said member through which can pass an externally screw-threaded hollow spigot (16) of an internal combustion engine, and one or more additional apertures (38) formed in said member between said central aperture (36) and said depending solid skirting flange (26); a sealing gasket (22) retainable on an upper face of said plate-like member (24); a hollow, apertured fixing nut (30) having one end thereof engageable with a lower face (44) of said plate-like member (24), said one end having a bore (54) therein which is internally screw-threaded to engage said externally screw-threaded hollow spigot (16), said fixing nut (30) having an opposite end which has an internally screw-threaded bore (58) formed therein, and apertured side walls; a pleated paper filter element (32) which includes, extending therethrough, a central, apertured tubular support (64),(66) formed from an oil-resistant, combustible material, which tubular support (64),(66) is sealingly engageable at one end with said lower face (44) of said plate-like member (24) around and adjacent said fixing nut (30); and a hollow container (34) enclosing said pleated paper filter element (32), and having a base portion (74), a tubular side wall (76) extending upwards from said base portion (74), and an open top, said base portion (74) being provided with a central, fixed, upwardly-extending bolt member (78) having an upper free end (80) externally screw-threaded to engage the internally screw-threaded bore (58) of the opposite end of said fixing nut (30), and said side wall (76) adjacent said open top of the container being configured both to securely retain thereon an external resilient "O" ring seal (28) and to slidingly fit within said depending solid skirting flange (26); said pleated paper filter element (32) being retained within said container (34) by means of said central, upwardly-extending bolt member (78) passing in sealing contact through the other end of the tubular support (64),(66) and into threaded engagement with the internally screw-threaded bore (58) of said fixing nut (30), and said external resilient "O" ring seal (28) providing an oil-tight connection between said depending solid skirting flange (26) and said side wall (76) adjacent said open top of the container (34). The disposable oil filter represents a marked improvement over existing cartridge oil filters in that all the metal components of the disposable oil filter are re-usable and do not require to be discarded when the filter element is changed, and the filter element itself is formed of combustible materials, which allows the used filter element to be disposed of by combustion in a suitable furnace in an environmentally-clean, cost-effective manner. <IMAGE></p> |
