Mixer rotor pin with hole

Patent metadata

Field	Value
Publication number	US-11344854-B2
Application number	US-202016817365-A
Country	US
Kind code	B2
Filing date	Mar 12, 2020
Priority date	Mar 12, 2020
Publication date	May 31, 2022
Grant date	May 31, 2022

Abstract

An apparatus for inserting and removing a mixer rotor pin includes at least one rotor pin with a transverse bore, as well as a rod dimensioned for slidably engaging the transverse bore. The apparatus also includes a mixer rotor pin insertion and removal tool having a tool body. A bottom of the tool has a slot for selectively engaging the aforementioned rod upon insertion of the rod into the transverse bore, and a top of the tool has a non-circular socket for accommodating a driver tool.

First claim

The invention claimed is:

1. An apparatus for inserting and removing a mixer rotor pin used for mixing a wallboard slurry and a such a rotor pin, comprising:
at least one rotor pin having a body with a transverse bore, and an outer surface, said rotor pin body having a top end and an opposing bottom end;
a rod dimensioned for slidably engaging said transverse bore;
a mixer rotor pin insertion and removal tool having a tool body, said tool body having a tool body bore shaped to compatibly engage said at least one rotor pin body, a bottom of the tool body having a slot with an open end, a closed end, and sidewalls that taper from said open end to said closed end for selectively engaging said rod upon insertion of said rod into said transverse bore, and an opposite top of the body having a non-circular socket for accommodating a driver tool;
wherein said tool body slidingly engaged with said outer surface of said rotor pin near said top end as said rod engages said traverse bore; and
wherein said top end of said rotor pin body is positioned within said tool body bore when said rod is engaged with said transverse bore.

2. The apparatus as defined in claim 1 , wherein each said at least one rotor pin has a cylindrical body, said body having a body diameter and said transverse bore having a bore diameter 5/16 of said body diameter.

3. The apparatus as defined in claim 1 , wherein each said at least one rotor pin is chrome-plated on said body and said transverse bore is unplated.

4. The apparatus as defined in claim 1 , wherein said transverse bore is placed at a height measured from a bottom end that is ¾ of said height of said body.

5. The apparatus as defined in claim 1 , wherein said transverse bore has a pair of opposing openings, each said opening has a chamfered edge.

6. The apparatus as defined in claim 1 , wherein said rod, upon insertion into said transverse bore, is of sufficient length to extend from opposing ends of said outer surface of said rotor pin body to selectively engage said slot of said mixer rotor pin insertion and removal tool.

7. The apparatus as defined in claim 1 , wherein each said at least one rotor pin has a threaded nipple attached to the bottom of said body.

8. The apparatus as defined in claim 7 , wherein said body has a body diameter, and said threaded nipple has a nipple diameter ⅔ that of said body diameter.

9. The apparatus as defined in claim 7 , wherein said threaded nipple has a chamfered bottom edge.

10. The apparatus as defined in claim 1 , wherein the said mixer rotor pin insertion and removal tool has a hexagonal socket for accommodating a hex wrench driver tool.

11. A mixer rotor pin for creating shear forces in gypsum slurry, comprising:
a body with a transverse bore;
said transverse bore dimensioned for slidably engaging a rod; and
a threaded nipple attached to the bottom of said body;
wherein said body has a body diameter, and said threaded nipple has a nipple diameter less than that of said body diameter;
wherein said transverse bore is placed at a height measured from a bottom end that is ¾ of said height of said body, said transverse bore having a bore diameter 5/16 of said body diameter; and
wherein said nipple diameter is ⅔ that of said body diameter.

12. The rotor pin as defined in claim 11 , wherein said body is cylindrical.

13. The rotor pin as defined in claim 11 , wherein said transverse bore has a pair of opposing openings, each said opening has a chamfered edge.

14. The rotor pin as defined in claim 11 , wherein said threaded nipple has a chamfered bottom edge.

15. An apparatus for inserting and removing a mixer rotor pin used for mixing a wallboard slurry, and such a rotor pin, comprising:
at least one rotor pin having a body a transverse bore and an outer surface, said rotor pin body having a top end and an opposing bottom end;
a rod dimensioned for slidably engaging said transverse bore;
a mixer rotor pin insertion and removal tool having a tool body, said tool body having a tool body bore shaped to compatibly engage said at least one rotor pin body, a bottom of the body having a slot with an open end, a closed end, and sidewalls that taper from said open end to said closed end for selectively engaging said rod upon insertion of said rod into said transverse bore, and an opposite top of the body having a non-circular socket for accommodating a driver tool;
wherein said tool body slidingly engages with said outer surface of said rotor pin near said top end as said rod slidingly engages said transverse bore and is engaged by said slot;
wherein said top end of said rotor pin body is positioned within said tool body bore when said rod is engaged with said transverse bore;
wherein each said at least one rotor pin has a cylindrical body, said body having a body diameter and said transverse bore having a bore diameter 5/16 of said body diameter;
wherein said transverse bore is placed at a height measured from a bottom end that is ¾ of said height of said body; and
wherein each said at least one rotor pin has a threaded nipple attached to the bottom of said body, and said threaded nipple has a nipple diameter ⅔ that of said body diameter.

Assignees

• Knauf Gips Kg

Inventors

• Drebenstedt Cass

Classifications

• F16B23/0061

  with grooves, notches or splines on the external peripheral surface designed for tools engaging in radial direction (F16B23/003 takes precedence) · CPC title

• B28B17/023

  Conditioning gypsum · CPC title

• B01F27/115 Primary

  comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis · CPC title

• B01F27/1121

  pin-shaped · CPC title

• B01F27/071

  Fixing of the stirrer to the shaft · CPC title