"Screw Pump With Field Refurbishment Provisions"

Abstract: A screw pump (20) with field refurbishment provisions has screws (40), a base (26), and shafts (50) for the screws (40). The screws (40) have helical flights that intermesh during rotation, and extend between inner and outer ends (44 and 42). The shafts (50) extend between inner and outer ends (68 and 74), and are cantilevered from the base (26) from about the inner end (68) thereof. Each screw (40) is formed with a hollow core (80) for receiving its shaft (50) such that the screw (40) slips onto the respective shaft (50) therefor over the outer end (74) of its shaft (50). The screw pump further includes a keyless locking mechanism (56, 58,96, or 98) intermediate each shaft (50) and screw (40), which is operative to rotationally lock the shaft (50) and screw (40) together without a key or key way.

Patent Information

Application #

Filing Date

16 May 2011

Publication Number

45/2012

Publication Type

INA

Invention Field

MECHANICAL ENGINEERING

Status

Email

Parent Application

Applicants

TUTHILL CORPORATION

8500 S. MADISON STREET, BURR RIDGE, ILLINOIS (IL) 60527, U.S.A.

Inventors

1. TIMOTHY M. KIRKLAND

9189 WEST FARM ROAD 84 WILLARD, MISSOURI (MO) 65781, U.S.A.

Specification

Documents

Application Documents

#	Name	Date
1	1422-del-2011-Correspondence Others-(04-04-2012).pdf	2012-04-04
1	1422-del-2011-Correspondence-Others-(23-09-2011).pdf	2011-09-23
2	1422-del-2011-Assignment-(23-09-2011).pdf	2011-09-23
2	1422-del-2011-Form-3-(04-04-2012).pdf	2012-04-04
3	1422-del-2011-GPA-(28-11-2011).pdf	2011-11-28
3	1422-del-2011-Abstract.pdf	2012-01-20
4	1422-del-2011-Correspondence others-(28-11-2011).pdf	2011-11-28
4	1422-del-2011-Claims.pdf	2012-01-20
5	1422-del-2011-Form-5.pdf	2012-01-20
5	1422-del-2011-Correspondence-Others-(20-01-2012).pdf	2012-01-20
6	1422-del-2011-Form-3.pdf	2012-01-20
6	1422-del-2011-Correspondence-others.pdf	2012-01-20
7	1422-del-2011-Form-3-(20-01-2012).pdf	2012-01-20
7	1422-del-2011-Description (Complete).pdf	2012-01-20
8	1422-del-2011-Drawings.pdf	2012-01-20
8	1422-del-2011-Form-2.pdf	2012-01-20
9	1422-del-2011-Form-1.pdf	2012-01-20
10	1422-del-2011-Form-2.pdf	2012-01-20
10	1422-del-2011-Drawings.pdf	2012-01-20
11	1422-del-2011-Form-3-(20-01-2012).pdf	2012-01-20
11	1422-del-2011-Description (Complete).pdf	2012-01-20
12	1422-del-2011-Form-3.pdf	2012-01-20
12	1422-del-2011-Correspondence-others.pdf	2012-01-20
13	1422-del-2011-Form-5.pdf	2012-01-20
13	1422-del-2011-Correspondence-Others-(20-01-2012).pdf	2012-01-20
14	1422-del-2011-Correspondence others-(28-11-2011).pdf	2011-11-28
14	1422-del-2011-Claims.pdf	2012-01-20
15	1422-del-2011-GPA-(28-11-2011).pdf	2011-11-28
15	1422-del-2011-Abstract.pdf	2012-01-20
16	1422-del-2011-Form-3-(04-04-2012).pdf	2012-04-04
16	1422-del-2011-Assignment-(23-09-2011).pdf	2011-09-23
17	1422-del-2011-Correspondence-Others-(23-09-2011).pdf	2011-09-23
17	1422-del-2011-Correspondence Others-(04-04-2012).pdf	2012-04-04