Finance Industry News on February 17, 2025, Information from the National Knowledge and Rights Bureau showed that Beijing Shibian Baili Decoration Engineering Co., Ltd. obtained a \”a PD sliding door duct profile combination and duct summary\” named \”a PD sliding door duct profile combination and duct summary \”\” patent, authorization announcement CN 222478500 U, application date is May 2024.
The patent summary shows that this practical new model involves a PD The sliding door duct profile combination and the duct composition include outer shell, main duct profile, sliding duct profile, fixed duct profile. When used, the main duct profile is installed in the outer shell, and the sliding duct profile is installed in the main duct profile. The sliding groove of the sliding track profile is located below the upper main track and above the third slide, the first slide is located above the lower main track, and when the sliding track profile enters the fixed track, the second slide is located above the fixed track . In this application, the main track profile and fixed track profile adopts a circular axial stainless steel track or other wear-resistant material track as the reinforced track, and then the concave sliding wheel of Nilong material and the circular reinforced track are used to cooperate with each other to avoid the use of aluminum alloy material. The direct contact extends the wear resistance of the duct, and the contact surface of the duct and wheel assembly is smoother and quieter during the use of the product.
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