Polyport atmospheric gas sampler
First Claim
1. A multi-port gas sampler comprising:
- a flow-through housing defining a sampling chamber and including means for accommodating a flow of gases to be sampled through the housing;
a sample support plate including apertures extending across and enclosing the sampling chamber within the housing;
respective gas sampling means depending into the sampling chamber and secured to the sample support plate across each of the apertures in said plate in flow-through relation to the flow of gases through the housing during sampling operations;
normally closed stopper means mounted on the sample support plate operatively associated with each of the gas sampling means and normally blocking the flow of gases to be sampled through its respective gas sampling means; and
means for selectively opening the stopper means associated with each of the gas sampling means, said means being mounted on the sample support plate and adapted to rotate under and selectively lift open said stopper means to accommodate a predetermined flow of gases to be sampled through the respective gas sampling means.
1 Assignment
0 Petitions
Accused Products
Abstract
An atmospheric gas sampler with a multi-port valve which allows for multi, sequential sampling of air through a plurality of gas sampling tubes mounted in corresponding gas inlet ports. The gas sampler comprises a flow-through housing which defines a sampling chamber and includes a gas outlet port to accommodate a flow of gases through the housing. An apertured sample support plate defining the inlet ports extends across and encloses the sampling chamber and supports gas sampling tubes which depend into the sampling chamber and are secured across each of the inlet ports of the sample support plate in a flow-through relation to the flow of gases through the housing during sampling operations. A normally closed stopper means mounted on the sample support plate and operatively associated with each of the inlet ports blocks the flow of gases through the respective gas sampling tubes. A camming mechanism mounted on the sample support plate is adapted to rotate under and selectively lift open the stopper spring to accommodate a predetermined flow of gas through the respective gas sampling tubes when air is drawn from the housing through the outlet port.
-
Citations
16 Claims
-
1. A multi-port gas sampler comprising:
-
a flow-through housing defining a sampling chamber and including means for accommodating a flow of gases to be sampled through the housing; a sample support plate including apertures extending across and enclosing the sampling chamber within the housing; respective gas sampling means depending into the sampling chamber and secured to the sample support plate across each of the apertures in said plate in flow-through relation to the flow of gases through the housing during sampling operations; normally closed stopper means mounted on the sample support plate operatively associated with each of the gas sampling means and normally blocking the flow of gases to be sampled through its respective gas sampling means; and means for selectively opening the stopper means associated with each of the gas sampling means, said means being mounted on the sample support plate and adapted to rotate under and selectively lift open said stopper means to accommodate a predetermined flow of gases to be sampled through the respective gas sampling means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A multi-port gas sampler comprising:
-
a flow-through housing defining a sampling chamber and including gas outlet means to accommodate a flow of gases to be sampled through the housing; a sample support plate including apertures extending across and enclosing the sampling chamber within the housing; respective gas sampling tubes depending into the sampling chamber and secured to the sample support plate across each of the apertures in said plate in flow-through relation to the flow of gases through the housing during sampling operations; normally closed stopper means mounted on the sample support plate operatively associated with each of the gas sampling tubes and normally blocking the flow of gases to be sampled through its respective gas sampling tubes; a camming mechanism mounted on the sample support plate adapted to rotate under and selectively lift open the stopper means associated with each of said gas sampling tubes to accommodate a predetermined flow of gases to be sampled through the respective gas sampling tubes; a drive motor carried by the sample support plate adapted to rotate said camming mechanism; and signalling means mounted on the sample support plate aligned with the stopper means and associated with each of the gas sampling tubes such that a signal is sent when said stopper means is selectively opened by the camming mechanism. - View Dependent Claims (13, 14, 15, 16)
-
Specification