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11. 发明授权

US4002079A Breathing protector boot for impactor tools 失效
标题翻译：用于冲击器工具的呼吸保护罩
公开(公告)号：US4002079A
公开(公告)日：1977-01-11
申请号：US608369
申请日：1975-08-27
申请人： William A. Hall
发明人： William A. Hall
IPC分类号： B25D17/08 , E21C37/22 , F16J15/52 , F16J15/50
CPC分类号： B25D17/08 , E21C37/22 , F16J15/52 , B25D2217/0069
摘要： An elastomeric protector boot for covering the lower housing of a hydraulically operated impactor tool characterized by air vents which are adapted to allow free air communication between the interior of the boot while preventing debris from entering the lower housing of the impactor. The protector boot further includes an internal foam rubber filter member for ensuring that foreign particles do not enter the annular space between the bit and the housing. The air vents are further protected from being snagged or torn through the provision of protection lobes which allow air communication between the air vent while preventing ingress of debris generated by operation of an impactor.
摘要翻译：用于覆盖液压操作的冲击器工具的下壳体的弹性保护器护罩，其特征在于通风口，其适于允许在护罩内部之间的自由空气连通，同时防止碎片进入冲击器的下壳体。保护罩还包括内部泡沫橡胶过滤构件，用于确保外来颗粒不会进入钻头和壳体之间的环形空间。进一步保护通风口不被阻塞或撕裂通过提供保护孔，这允许空气通气之间的空气连通，同时防止冲击器的操作产生的碎片进入。

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