Vacuum cleaner nozzle专利检索-犁壁犁作物管理专利检索查询-专利查询网

Vacuum cleaner nozzle

阅读：6发布：2021-12-17

专利汇可以提供Vacuum cleaner nozzle专利检索，专利查询，专利分析的服务。并且A vacuum cleaner nozzle movable over a deep pile rug and the like and having a body with a suction chamber portion and a retractable pivotable rake with hollow tines providing air flow passages when the rake is extended and pulled through the pile in order to exert a suction cleaning effect down to the bottom of the pile. The nozzle may also include a narrow rear wall portion on each tine with diverging sides toward a front wall portion so that the tines of the rake thereby act as pile penetrating plows when the nozzle is pulled across deep pile rugs. The disclosure also includes a releasable retainer for retaining the rake in a retracted position as for surface cleaning and a movable cam for urging the rake from its retracted position toward an automatic operating position for cleaning a deep pile rug. In the automatic operating position, the tines of the rake automatically pivot backward as the nozzle is pushed forward, and pivot to an extended pile penetrating position as the nozzle is pulled backward. The disclosure also includes a movable valve in the nozzle body movable by the rake between a first location blocking air flow through the nozzle inlet when the rake is in extended automatic operative position for deep cleaning and grooming of long pile fibers, and movable to a second location blocking the flow of air into and through the hollow tines when the rake is in retracted inoperative position as when the nozzle is used for surface cleaning.，下面是Vacuum cleaner nozzle专利的具体信息内容。

权利要求

1. A vacuum cleaner nozzle apparatus movable over a deep pile rug and the like during cleaning, comprising: a body having a suction chamber portion adapted to be subjected to vacuum, and a suction inlet; a retractable rake having an upper portion at said body and a lower portion comprising a plurality of extended hollow tines for combing said rug, each tine having a lower end, an upper end and a passage therebetween for flow of air into and through said tines into said chamber; mounting means for mounting said rake on said nozzle body for movement between extended operative position and retracted inoperative position; a valve in said body movable between a first location blocking said inlet when said rake is in said extended position and a second location blocking said flow of air into and through said tines when said rake is in said retracted inoperative position; and means for moving said valve between said first and said second locations.

2. The apparatus of claim 1 wherein there are provided releasable retaining means for retaining said rake in said retracted position.

3. The apparatus of claim 2 wherein said retaining means comprises yieldable engaged members on said body and said rake that are in engagement when said rake is in the retracted position to maintain the retracted position and with means for forcibly displacing the retracted rake toward extended position thereby displacing said members from their engagement.

4. The apparatus of claim 3 wherein said displacing means comprises a rotatable cam member on said nozzle body rotatable to urge said rake from said retracted position.

5. The apparatus of claim 1 wherein said rake is provided with hinged attaching means for attaching the rake to said body for arcuate movement of the rake between said first and second positions.

6. The apparatus of claim 1 wherein there are provided spaced valve seats in said suction chamber body adapted to be engaged selectively by said valve, and said valve moving means comprises means on said rake for engaging and moving said valve from said first position to said second position upon said movement of the rake to said retracted position.

7. The apparatus of claim 1 wherein said rake when in retracted position is projected away from the front of the nozzle body, each said tine having a narrow rear wall portion with diverging sides toward a front wall portion and thereby acting as a pile penetrating plow when the nozzle apparatus is pulled across a deep pile rug, the rake being forced to a rearwardly extending position when the nozzle apparatus is pushed across said rug.

8. A vacuum cleaner nozzle apparatus movable over a deep pile rug and the like during cleaning, comprising: a body having a suction chamber portion adapted to be subjected to vacuum, and a suction inlet; a retractable rake having an upper portion at said body and a lower portion comprising a plurality of extended hollow tines for combing said rug, each tine having a lower end, an upper end and a passage therebetween for flow of air into and through said tines into said chamber; hinged attaching means for attaching the rake to said body for arcuate movement between a downwardly extending position and a rearwardly extending intermediate position; a valve in said body movable between a first location blocking said inlet when said rake is in said downwardly extending position and a second location blocking said flow of air into and through said tines when said rake is in said rearwardly extending intermediate position; and valve operating means in said body for engaging and moving said valve from said first position to said second position upon said movement of the rake to said intermediate position.

9. A vacuum cleaner nozzle apparatus movable over a pile rug and the like during cleaning, comprising: a body having a suction chamber portion adapted to be subjected to vacuum, and a suction inlet, a pivotable rake having an upper portion at said body and a lower portion comprising a plurality of extended hollow tines for combing said rug, each tine having a lower end, and upper end and a passage therebetween for flow of air into and through said tines into said chamber; mounting means for mounting said rake on said nozzle body for pivotal movement between an extended operation position for deep cleaning of long pile rug fibers and a retracted position for surface cleaning; a valve in said body movable between a first location blocking said inlet when said rake is in said extended operative position and a second location blocking said flow of air into and through said tines when said rake is in said retracted position; and means for moving said valve between said first location and said second location.

10. The apparatus of claim 9 wherein said moving means includes cam means associated with said rake.

11. The apparatus of claim 9 wherein said moving means includes resilient means for positively seating said valve in one of said locations.

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Vacuum cleaner nozzle

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