Gas evacuation system with counter

1. A device for puncturing a pressurized container for relieving the pressure therein and for releasing the residual contents thereof into a drum of a type having an end wall with a surrounding protruding peripheral rim, said device comprising:

a generally elongated housing member defining an elongated cavity with openings at first and second ends thereof for receiving a pressurized container at said first end and further including an attachment means for securing said second end of said housing member to said end wall of said drum for collection by said drum of contents expelled from said pressurized container through said second end;

a puncturing means mounted on said housing member intermediate said first and second ends for piercing said pressurized container in said elongated cavity whereby gases and residual contents thereof are emptied into said drum through said opening at said second end;

a counter means cooperatively engaged with said puncturing means wherein said counter means records each piercing of said pressurized container by an increasing count such that at a plurality of preselected counts prior to a preselected maximum count and without resetting the counter, at least one maintenance activity is indicated as due and such that at preselected additional increasing counts an additional maintenance activity is indicated as due;

said device further including an auxiliary support means for extending from said housing member to said protruding peripheral rim of said drum for stabilizing relative movement between said housing member and said drum during operation of said device.

2. A device as in claim 1 wherein said attachment means is a threaded terminus of said elongated housing member for engaging threads of said end wall of said drum.

3. A device as in claim 2 wherein said auxiliary support means is rotatable on said elongated housing member.

4. A device as in claim 1 wherein said counter means may be reset to its initial counter setting.

5. A device as in claim 1 wherein the counter means is enclosed within a housing such that a portion of the counter means remains visible.

6. A device as in claim 1 wherein is further included a force-applying means movably mounted on said housing member for engaging said pressurized container positioned in said elongated cavity and forcing said pressurized container towards said second end.

7. A device as in claim 1 wherein said puncturing means comprises a puncturing pin extending into an intermediate housing aperture, said pin including a spring for urging said pin out of said elongated cavity and a lever, pivotally mounted on the outside of said housing member, which is coupled to said pin via a pivoted link, for driving said pin into said elongated cavity.

8. A device for puncturing a pressurized container for relieving the pressure therein and for releasing the gases and residual contents thereof into a collection receptacle, said device comprising:

a generally elongated housing member defining an elongated cavity with openings at first and second ends thereof for receiving a pressurized container at said first end and further including an attachment means for securing said second end of said housing member to said receptacle for collecting contents expelled from said pressurized container through said second end;

a puncturing means mounted on said housing member intermediate said first and second ends for piercing said pressurized container whereby gases and residual contents thereof are emptied into said collection receptacle through said opening at said second end;

a counter means cooperatively engaged with said puncturing means wherein said counter means records each piercing of said pressurized container by an increasing count such that at a plurality of preselected counts prior to a preselected maximum count and without resetting the counter, at least one maintenance activity is indicated as due and such that at preselected additional increasing counts an additional maintenance activity is indicated as due;

said device further comprising a force-applying means movably mounted on said housing member for engaging said pressurized container positioned in said elongated cavity and forcing said pressurized container towards said second end, wherein said force-applying means comprises a plate affixed to a shaft which is slidably mounted on said housing member.

9. A device as in claim 8 wherein said shaft binds relative to said housing member in response to a force by said pressurized container against said plate, thereby resisting movement of said plate relative to said housing member.

10. A device as in claim 8 wherein is further included a set-screw on said housing member for selectively engaging said shaft for holding said plate in a desired position.

11. A device as in claim 8 wherein a pointed tip of said puncturing means is of a non-sparking metal.

12. A device as in claim 8 wherein a portion of said puncturing means extends through an intermediate housing aperture having a seal mounted thereon for forming a seal with a portion of said elongated housing member defining said intermediate aperture.

13. A device as in claim 8 wherein said counter means may be reset to its initial counter setting.

14. A device as in claim 8 wherein the counter means is enclosed within a housing such that a portion of the counter means remains visible.

15. In a device for puncturing a pressurized container for relieving the pressure therein and for releasing for collection in a receptacle, residual contents thereof, the improvement wherein:

said device comprises a generally elongated housing member defining an elongated cavity with openings at first and second ends thereof for receiving a pressurized container therein at said first end and further including an attachment means for selectively securing said second end of said housing member to a receptacle for collecting contents expelled from said second end and for supporting said housing;

a puncturing means mounted on said housing member intermediate said first and second ends for piercing said pressurized container in said cavity whereby gases and residual contents thereof are emptied into said collection receptacle through said opening at said second end;

a counter means cooperatively engaged with said puncturing means wherein said counter means records each piercing of said pressurized container by an increasing count such that at a plurality of preselected counts prior to a preselected maximum count and without resetting the counter, at least one maintenance activity is indicated as due and such that at preselected additional increasing counts an additional maintenance activity is indicated as due; and

wherein said housing member defines an internal shoulder within said elongated cavity between said puncturing means and said first end whereby said pressurized container can be inserted into said first end in an inverted attitude with an external shoulder thereof engaging said internal shoulder, with a portion thereof extending below said shoulder means to be punctured by said puncturing means.

16. A device as in claim 15 wherein a resilient seal is included at said internal shoulder.

17. A device as in claim 15 wherein the attachment means comprises male threads at said second end of said elongated housing member for engaging standard threaded openings of storage drums.

18. A device as in claim 15 wherein said housing member has an intermediate aperture into said elongated cavity intermediate said first and second ends and wherein said puncturing means is movably mounted on said housing member for extending through said aperture and piercing said pressurized container below said shoulder means.

19. A device as in claim 15 wherein said counter means may be reset to its initial counter setting.

20. A device as in claim 15 wherein the counter means is enclosed within a housing such that a portion of the counter means remains visible.