Spirograph mouthpiece专利检索-肺活量计诊断设备和程序专利检索查询-专利查询网

Spirograph mouthpiece

阅读：35发布：2020-12-27

专利汇可以提供Spirograph mouthpiece专利检索，专利查询，专利分析的服务。并且A disposable mouthpiece for use with a spirometer and like instruments having an air conduit containing an impeller, which is supported within the conduit by a cap that also functions to antiseptically seal one end of the air conduit. The air conduit is adapted to be inserted into a spirometer for engagement of a drive shaft of the spirometer with the impeller. The impeller is designed to rotate the shaft when the cap is removed and air is blown through the conduit.，下面是Spirograph mouthpiece专利的具体信息内容。

权利要求

1. A mouthpiece comprising: a casing, an air conduit, an impeller disposed within said air conduit, said casing having means holding one end of said air conduit, said air conduit having means at said one end thereof for retaining said impeller, and a cover disposed about the other end of said air conduit closing said casing, whereby said casing and cover together define an enclosure for said conduit and impeller, said casing including means defining a wall at one end thereof remote from said cover having an aperture therein which is coaxial with a center axis of said impeller.

2. The mouthpiece of claim 1 wherein said cover includes means for supporting said impeller.

3. The mouthpiece of claim 2 wherein said supporting means includes a post extending interior of said air conduit and contacting said impeller.

4. A mouthpiece comprising: an impeller, an air conduit having means at one end thereof at least temporarily retaining the impeller within the air conduit, and a casing having a wall at one end and being substantially open at the other end and including elongated support webs extending inside said casing and terminating near said other end, said support webs holding said onE end of said air conduit, said wall having an aperture therethrough which is coaxial with a center axis of said impeller.

5. The mouthpiece of claim 4 wherein said support webs included four webs disposed from an inner surface of said casing at 90* one from the next.

6. The mouthpiece of claim 4 wherein said means for retaining includes an inwardly extending annular lip disposed at said one end.

7. A mouthpiece for engagement with an external shaft comprising: an air conduit, an impeller within said conduit, a casing surrounding and supporting one end of said conduit, and a removable protective cover at the other end of said conduit closing said casing, whereby said casing and cover together define an enclosure for said conduit and said impeller, said casing including means defining a shaft-aligning aperture at an end of said casing remote from said cover and coaxial with said impeller, said cover including means for supporting said impeller.

8. The mouthpiece of claim 7 wherein said means for supporting said impeller is integral with said cover and includes a post extending axially into said air conduit with a portion thereof in engagement with said impeller when said cover is closed over said casing.

9. The mouthpiece of claim 7 including a plurality of webs interconnecting said casing and air conduit supporting said air conduit in spaced relation to an outer portion of said casing.

10. The mouthpiece of claim 7 including means supporting said casing coaxially about said air conduit and defining therewith an annular air passage in fluid communication with said impeller.

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Spirograph mouthpiece

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