Kenneth G Allen

US Patent:

42349389, Nov 18, 1980

Filed:

Oct 25, 1977

Appl. No.:

5/844549

Inventors:

Kenneth P. Allen - Stamford CT
Maynard S. Redeker - Farmers Branch TX

Assignee:

Mobil Oil Corporation - New York NY

International Classification:

G01V 138

US Classification:

367 24

Abstract:

In marine seismic exploration, measurements of reflectivity and water depth are made from seismograms produced by the firing of a seismic energy source towed by a marine vessel. The measurements are made by generating the auto-correlation coefficients of a window of the seismogram and combining these coefficients for different time lags. The time lag producing the minimum energy in the combined autocorrelation coefficients represents water depth. The reflectivity of the water bottom is obtained by generating an estimate of the reflectivity from the values of the auto-correlation function of the window, and modifying this estimate by a factor which converts the estimate to the reflectivity. The measured water depth and reflectivity are converted into an inverse operator. A linear array of sources is then fired in a sequence such that the acoustic pulses combine to produce a resultant acoustic pressure wave having the inverse time domain operator characteristics.

US Patent:

46227024, Nov 18, 1986

Filed:

Nov 12, 1985

Appl. No.:

6/797225

Inventors:

Kenneth A. Allen - Racine WI

International Classification:

E03D 1100

US Classification:

4255

Abstract:

An improved plunger for clearing clogged bathroom drains and the like. The plunger has apertures through the wall of its resiliently collapsible cup and a diaphragm or other occlusion member on the inside surface of the cup for alternately opening and partially occluding the apertures in response to pressures and liquid flow. The invention allows repetitive application of downward hydraulic pressure on the clog without excessive reverse pressures during the intervening upward strokes, facilitates variation in the degree of hydraulic pressure applied, and provides several related advantages. In one preferred embodiment, the diaphragm is secured to a raised portion of the cup inside surface. In another, the degree of maximum occlusion is adjustable by turning the occlusion member. In yet another, the cup and diaphragm are integrally formed.