3,409,525 

 PROCESS FOR REDUCING CORROSION 

 Cbarles VV. Taylor, Jr., Akron, and Daniel T. Conrad, 

 Cuyahoga Falls, Ohio, assignors to The Goodyear Tire 

 & Rubber Company, AIcTon, Ohio, a corporation of 

 Ohio 



No Drawing. Filed May 24, 1965, Ser. No. 458,436 

 8 Claims. (CI. 204 — 147) 



1. In the cathodic process of protecting ferrous articles 

 from corrosion the improvement which comprises sub- 

 jecting a ferrous article to a treatment that forms a phos- 

 phate coatirg on the surface of che article, then coating 

 it with a fused resin, and then cathodically protecting said 

 article. 



Keywords: Cathodic protection; Corrosion 

 prevention 



No Figure 



3,409,871 

 ELIMINATION OF MULTIPLE EVENTS ON SEIS- 

 MOGRAMS OBTAINED AT WATER-COVERED 

 AREAS OF THE EARTH 

 Harland H. Heffring, Calgary, Alberta, Canada, assignor 

 to Esso Production Research Company, a corporation 

 of Delaware 



Filed Oct. 12, 1966, Ser. No. 586,075 

 7 Claims. (CI. 340 — 15.5) 



Ringing events are eliminated from a trace of a re- 

 producible seismogram taken at marine locations by ad- 

 justably attenuating electrical signals produced from a 

 trace, delaying the trace by an amount equal to the seis- 

 mic wave travel time through the water layer beneath 

 the source, and adding the original signal to the unde- 

 layed and unattenuated signal. This process is repeated 

 using a delay equal to the travel time of waves in the 

 water layer beneath the seismic wave detector. The ap- 

 propriate attenuation and time delay is determined by 

 autocorrelation of traces produced by vertically traveling 

 seismic waves at the ends of a geophone spread. 



Keywords: Seismic record processor 



FLWIESCEir LlltP " 



NOVEMBER 12, 1968 



3,410,097 

 PILE CAPPING MECHANISM 



Edward M. Young, 90 Gregory Ave., 



West Orange, NJ. 07052 



Filed Mar. 21, 1966, Ser. No. 536,022 



7 Claims. (CI. 61—53) 



A pile capping mechanism for rehabilitating 

 the tops of old piles and also to provide con- 

 crete caps for new piles, the mechanism having 

 a bottom member or portion of integral over- 

 lapping flexible fingers directed inwardly and 

 angularly upwardly and of such length as to 

 provide a central opening smaller than the 

 pile and a casing extending from the bottom. 

 The mechanism may provide U shaped side edges 

 for the casing which are interengaged by con- 

 tracting the casing and including internal 

 braces when assembled to prevent inadvertent 

 contraction of the casing and disengagement 

 of the edges. 



Keywords : 



Concrete form; Pile, wood; 

 Structure repair 



Figure 4. Typical annotations for original patents issued before 1969. 



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