Michael P Stemper

US Patent:

6581862, Jun 24, 2003

Filed:

Mar 15, 2002

Appl. No.:

10/063065

Inventors:

Gregory A. Young - Cedar Rapids IA
Michael P. Stemper - Cedar Rapids IA
Albert D. Botton - Marion IA

Assignee:

Cedarapids, Inc. - Cedar Rapids IA

International Classification:

B02C 1302

US Classification:

2411891, 2412852, 2412853

Abstract:

A horizontal shaft impact rock crusher having breaker plates which are coupled to a shaft or pins which rest in voids along an edge of the crusher and are held in place by a retainer device, such that the breaker plates with the shaft or pins still attached can be removed from the crusher by releasing the retainer devices.

US Patent:

6637680, Oct 28, 2003

Filed:

Mar 15, 2002

Appl. No.:

10/063063

Inventors:

Gregory A. Young - Cedar Rapids IA
Michael P. Stemper - Cedar Rapids IA
Albert D. Botton - Marion IA

Assignee:

Cedarapids, Inc. - Cedar Rapids IA

International Classification:

B02C 1326

US Classification:

241 30, 2411863, 2411891, 241301

Abstract:

A horizontal shaft impact rock crusher having breaker plates which are adjustable by hand, using a novel tension rod adjustment nut locking device which employs several loose-fitting retaining devices which, in combination with a bridge to a frame member or another tension rod, hold the tension rod adjustment nut in place.

US Patent:

6845933, Jan 25, 2005

Filed:

May 28, 2002

Appl. No.:

10/156474

Inventors:

Michael P. Stemper - Marion IA, US

Assignee:

Cedarapids, Inc. - Cedar Rapids IA

International Classification:

B02C 1326

US Classification:

2411891, 29428, 241294

Abstract:

A retaining wedge assembly for securing an impeller bar to the rotor of a horizontal shaft impact crusher comprises a recess defined in the rotor and sized to receive the impeller bar. The recess includes a first seat shaped to engage a first portion of the impeller bar and a second seat. A retaining wedge includes a first portion adapted to engage a second portion of the impeller bar, and a second portion sized to engage the second seat. A countersunk slot on the second seat receives the retaining wedge, which in turn cooperates to secure the impeller bar in the recess. Guide flanges may be provided for limiting axial movement of the retaining wedge. Thus, the impeller bar may be supported in the recess prior to start-up of the horizontal shaft impact crusher.

US Patent:

7810749, Oct 12, 2010

Filed:

Mar 22, 2007

Appl. No.:

11/689905

Inventors:

Michael P. Stemper - Marion IA, US

Assignee:

Terex USA, LLC - Wilmington DE

International Classification:

B02C 25/00

US Classification:

241207

Abstract:

A gyratory cone crusher with a conehead centerline and a main centerline being skewed and non-coplanar with respect to each other. The conehead exhibits an elliptical movement path which results in faster throughput and enhanced cubicity performance.

US Patent:

8091818, Jan 10, 2012

Filed:

Sep 13, 2010

Appl. No.:

12/880979

Inventors:

Michael P. Stemper - Marion IA, US

Assignee:

Terex USA, LLC - Wilmington DE

International Classification:

B02C 25/00

US Classification:

241207, 241208

Abstract:

A gyratory cone crusher with a conehead centerline and a main centerline being skewed and non-coplanar with respect to each other. The conehead exhibits an elliptical movement path which results in faster throughput and enhanced cubicity performance.

US Patent:

20130075508, Mar 28, 2013

Filed:

Sep 26, 2012

Appl. No.:

13/627775

Inventors:

MICHAEL P. STEMPER - MARION IA, US

Assignee:

TEREX USA, LLC - WESTPORT CT

International Classification:

B02C 2/02
B23P 11/00

US Classification:

241207, 241300, 2952511

Abstract:

A system and method for absorbing shock and reducing wear on a V seat of a cone crusher, where a plurality of sheets of brass, each having slots therein extending into the sheet from opposing sides, are bolted to a top portion of the V seat and made to conform so as to extend over an exterior portion of the V seat, a top portion of the V seat and an inside portion of the V seat, when the top of the cone crusher bends the sheets as the top of the cone crusher is moved closer to the V seat.

US Patent:

60708204, Jun 6, 2000

Filed:

Mar 22, 1999

Appl. No.:

9/273587

Inventors:

Gregory A. Young - Cedar Rapids IA
Michael P. Stemper - Marion IA

Assignee:

Cedarapids, Inc. - Cedar Rapids IA

International Classification:

B02C 1900

US Classification:

241275

Abstract:

On a vertical shaft impact crusher, a table assembly having a reinforcing ring is disclosed. The vertical shaft impact crusher for crushing aggregate material includes a frame, with the table assembly being mountable to the frame for rotation about a vertical axis. The crusher includes a housing defining an impact surface spaced about an interior of the housing and surrounding the table assembly. The table assembly comprises a top surface, a bottom surface, and a peripheral edge. The top surface includes a central portion defining an aggregate landing surface, with the central portion being adapted to permit outward migration of the aggregate material in response to rotation of the table assembly. A plurality of shoe assemblies are mounted to the top surface adjacent to and spaced along the peripheral edge, with each shoe assembly being adapted to cause the outwardly migrating aggregate material to be thrown against the housing impact surface in response to rotation of the table assembly. The shoe assemblies collectively imparting a downward bending moment to the table assembly in response to rotation of the table assembly.

US Patent:

20200246831, Aug 6, 2020

Filed:

Apr 24, 2020

Appl. No.:

16/857726

Inventors:

- Westport CT, US
Michael Peter STEMPER - Marion IA, US
Alexander Evan ROSS - Washington IA, US
Ryan Anthony MUMM - Newhall IA, US

International Classification:

B07B 1/00
B07B 13/16
B07B 1/36
B07B 1/42

Abstract:

A screen drive for a mobile material processing screen which can be at a travel width without having to fold or disable the screen drive. The screen drive system includes a drive motor, which is tucked at least partially under the vibrating screen; a sheave, having a double row ball bearing being supported by a shaft; a belt, coupling sheave and drive motor; a drive shaft coupled to a first universal joint, and a second universal joint, which is coupled to an opposing end of the drive shaft and to sheave.