Title: Coupon holder

Abstract: An apparatus for inserting and removing a corrosion coupon from the interior of a pipeline while under pressure, comprises an elongated cylinder with a flange or threaded connection at one end and a closure device at the other end. The cylinder is attached to a valve which is attached as a branch to a pipeline. Inside of the cylinder are guides for the longitudinal movement of a long rack at the end of which is mounted the corrosion coupon. A pinion in operative relation to the rack is mounted on a shaft which is supported in a side pipe to the cylinder. A handwheel operating the shaft permits the longitudinal movement of a long rack within the cylinder. At the end of the rack is mounted the corrosion coupon. When the valve is open the coupon is moved through it into the pipeline so that the coupon is exposed to the fluid flowing in the pipeline. Indexing means is provided for determining the precise position of the coupon in the pipe.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Lewis, Harvey L.

Application Number: 773744
Filing Date: 1977-03-02
Publication_date: 1978-10-17
Assignee:
Primary Class(es): 137/268 422/53
Other Classes:
US Patent Ref:

980665	Jan, 1911	Ord	73/421.
1689236	Oct, 1928	Fraser	251/112.
1730305	Oct, 1929	Stancu	251/116.
1769463	Jul, 1930	Rice	73/86.
2770532	Nov, 1956	Mason	137/318.

Other Refs:
Primary Examiner: Cohan, Alan
Assistant Examiner:
Attorney: Head, Johnson & Chafin