DR. MICHAEL ANDREW CAMPBELL, MD
Medical Practice at Kempsville Cir, Norfolk, VA

6422273, Jul 23, 2002

Nov 9, 2001

09/986730

Michael C. Campbell - Virginia Beach VA 23454

B65B 104

141 65, 141330, 222 5, 222 835, 96135, 96149

A gaseous-material evacuation system includes a filter assembly ( ) with a housing ( ) containing filter material ( ) with a downstream porous filter member ( ) at a downstream side of the filter material. The filter assembly includes a valve ( ) with a movable valve member ( ) for moving in a direction of gas flow and having a breadth area dimension that is at least as great as that of the downstream surface of the downstream porous filter member. In a preferred embodiment, a spring member ( ) presses the movable valve member ( ) against the porous filter member ( ), thereby stopping gaseous flow, but yields when gaseous materials are driven through the filter at a predetermined pressure. The valve member is mounted in a sub-compartment ( ) of the housing, which is of a single-piece housing member.

5992475, Nov 30, 1999

Jul 21, 1998

9/119239

Michael C. Campbell - Norfolk VA

B65B 3104

141 65

An evacuating kit (10) having a puncturing device (14) for evacuating aerosol cans into a drum (12), on which the puncturing device is mounted at a first bung hole (36), also includes a filter canister (16) for being coupled to a second bung hole (77) of the drum by a flexible transfer hose (20) so that the filter canister can be supported by a floor supporting the drum. The puncturing device further includes a valve at a second end (32) of a tubular wall (23) of a housing (22) of the puncturing device with a valve poppet (50) positioned beyond the second end for opening and closing a second-end opening (28) using the second end of the housing as a valve seat. The valve has a valve stem (48) mounted for linear movement in a web (44) of the housing extending across the second opening. The stem includes circumferentially spaced stem fingers (56) for contacting a pressurized container being punctured to open and close the valve poppet. A can holding mechanism includes a plate (60) slideably mounted on the housing and a screw clamp mounted on the plate with a convex rounded surface (76) for contacting concave bottoms of aerosol cans.

5265762, Nov 30, 1993

Mar 31, 1992

7/861326

Michael C. Campbell - Virginia Beach VA
Katherine C. Campbell - Virginia Beach VA

B67B 700

222 5

A puncturing device (10) for pressurized containers (12) comprises an elongated housing member (16) defining an elongated cavity (24) with openings (26, 28) at first and second ends (30, 32) thereof for receiving an inverted pressurized container at the first end, the housing member including a selective attachment member (36) for securing the second end of the housing member to a collection receptacle (38). A non-sparking puncturing apparatus (18), with a lever (44) having a built-in stop (48, 50), is movably mounted on the housing member with a pivot-link (54)-driven puncture pin (56) extending through an intermediate aperture (34) into the cavity for piercing a nozzle-end of the pressurized container below an internal shoulder (40) thereof with a seal (42). Thus, gases and residual contents are released into the receptacle through the opening in the second end. An auxiliary support member (22) is rotatably mounted on the housing member for stabilizing relative movement between the housing member and the receptacle.

5529097, Jun 25, 1996

Jan 23, 1995

8/377118

Michael C. Campbell - Virginia Beach VA

B65B 3100

141 51

An evacuator housing ( 14) of a gas tank evacuator (10) receives a gas tank (12). A valve seal of a movable seal head (34) and a puncture seal (66) of the evacuator housing are clamped onto the gas tank at opposite ends by a hollow threaded shaft (32) to form a sealed test space (58) exteriorly of the gas tank at a valve (22) and a sealed evacuation space (68) exteriorly of the gas tank at a puncture spot (24). A pressure gauge (60) coupled to the test space rides on the seal head and a valve actuator in the form of a rod (40), passes through the hollow threaded shaft into the sealed test space. A puncturing mechanism (18) punctures the gas tank at the puncture spot. The sealed evacuation space is positioned vertically below the puncture spot and communicates with a carbon filter positioned vertically above the evacuation space so as to form a U-shaped trap (90).

5469898, Nov 28, 1995

Feb 1, 1995

8/382407

Michael C. Campbell - Virginia Beach VA

B65B 3104

141 65

A gas tank evacuator (10) comprises an evacuator housing (12) into which a neck (80) of a gas tank (82) can be screwed and an elongated valve-removal rod (14) for slidably passing through the evacuator housing and engaging and unscrewing a stem-actuated valve (88) of the gas tank. An elongated valve actuator pin (18) slidably passes through the valve-removal rod to extend from lower and upper ends of the valve-removal rod for independently actuating the stem-actuated valve. The valve-removal rod is moved longitudinally by a valve-removal-rod lever (16) which is pivotally attached to the evacuator housing and valve-removal rod by pivot links (60). The valve-removal-rod lever is pivoted on the evacuator housing to drive a valve-engaging device at a lower end of the valve-removal rod into engagement with the-stem-actuated valve of the gas tank for its removal from the gas tank.

5421380, Jun 6, 1995

Mar 16, 1994

8/213499

Michael C. Campbell - Virginia Beach VA

B65B 3104

141 65

A gas tank evacuator (10) comprises an evacuator housing (12) into which a neck (80) of a gas tank (82) can be screwed and an elongated valve-removal rod (14) for slidably passing through the evacuator housing and engaging and unscrewing a stem-actuated valve (88) of the gas tank. An elongated valve actuator pin (18) slidably passes through the valve-removal rod to extend from lower and upper ends of the valve-removal rod for independently actuating the stem-actuated valve. The valve-removal rod is moved longitudinally by a valve-removal-rod lever (16) which is pivotally attached to the evacuator housing and valve-removal rod by pivot links (60). The valve-removal-rod lever is pivoted on the evacuator housing to drive a valve-engaging device at a lower end of the valve-removal rod into engagement with the stem-actuated valve of the gas tank for its removal from the gas tank.