Daniel G Hansen

US Patent:

6386828, May 14, 2002

Filed:

Jan 3, 2001

Appl. No.:

09/753405

Inventors:

James R. Davis - Haslett MI
Daniel G. Hansen - Holt MI

Assignee:

Aerotech, Inc. - Mason MI

International Classification:

F24F 7013

US Classification:

415147, 416223 R, 416228, 454259, 454353

Abstract:

A ventilation fan assembly ( ) having a fan ( ) mounted in a housing ( ) and a shutter assembly ( ). The housing has a square inlet portion ( C), a circular center portion ( E) and a conical outlet portion ( D) having rifling grooves ( ). The shoulder ( ) formed between the inlet portion and the center portion is radiused to reduce disruption of air flowing from the inlet portion to the center portion. The shape of the blades ( ) of the propeller ( ) is such that the axial velocity produced as the propeller rotates is essentially constant along the length of the blades. The shutter assembly has a large, radiused entrance and airfoil shaped blades which reduce air disruption. The blades have a flexible flap ( ) along the trailing edges ( D) which form a seal between adjacent blades to prevent air from leaking from the housing through the shutter assembly.

US Patent:

6616404, Sep 9, 2003

Filed:

May 13, 2002

Appl. No.:

10/144076

Inventors:

James R. Davis - Haslett MI
Daniel G. Hansen - Holt MI

Assignee:

Munters Corporation - Amesbury MA

International Classification:

F24F 7013

US Classification:

415147, 416223 R, 416228, 454259, 454353, 1375121

Abstract:

A ventilation fan assembly ( ) having a fan ( ) mounted in a housing ( ) and a shutter assembly ( ). The housing has a square inlet portion ( C), a circular center portion ( E) and a conical outlet portion ( D) having rifling grooves ( ). The shoulder ( ) formed between the inlet portion and the center portion is radiused to reduce disruption of air flowing from the inlet portion to the center portion. The shape of the blades ( ) of the propeller ( ) is such that the axial velocity produced as the propeller rotates is essentially constant along the length of the blades. The shutter assembly has a large, radiused entrance and airfoil shaped blades which reduce air disruption. The blades have a flexible flap ( ) along the trailing edges ( D) which form a seal between adjacent blades to prevent air from leaking from the housing through the shutter assembly.

US Patent:

6953320, Oct 11, 2005

Filed:

Sep 8, 2003

Appl. No.:

10/657620

Inventors:

James R. Davis - Haslett MI, US
Daniel G. Hansen - Holt MI, US

Assignee:

Munters Corporation - Amesbury MA

International Classification:

F24F007/013

US Classification:

415147, 416223 R, 416228, 454259, 454353

Abstract:

A ventilation fan assembly () having a fan () mounted in a housing () and a shutter assembly (). The housing has a square inlet portion (C), a circular center portion (E) and a conical outlet portion (D) having rifling grooves (). The shoulder () formed between the inlet portion and the center portion is radiused to reduce disruption of air flowing from the inlet portion to the center portion. The shape of the blades () of the propeller () is such that the axial velocity produced as the propeller rotates is essentially constant along the length of the blades. The shutter assembly has a large, radiused entrance and airfoil shaped blades which reduce air disruption. The blades have a flexible flap () along the trailing edges (D) which form a seal between adjacent blades to prevent air from leaking from the housing through the shutter assembly.

US Patent:

8414368, Apr 9, 2013

Filed:

Jan 22, 2008

Appl. No.:

12/017553

Inventors:

Daniel G. Hansen - Holt MI, US
Christopher Adam Hause - Eaton Rapids MI, US

Assignee:

Munters Corporation - Mason MI

International Classification:

F24F 13/08

US Classification:

454351, 454353, 1375121, 137527

Abstract:

A damper assembly for use with an axial fan to prevent air from entering the discharge side of the fan when the fan is at idle. The damper assembly includes a damper door having multiple sections. The sections are able to pivot independently in response to the air flow created by the fan to minimize airflow resistance when the fan is operating.

US Patent:

20100311318, Dec 9, 2010

Filed:

May 6, 2010

Appl. No.:

12/774818

Inventors:

Christopher A. Hause - Eaton Rapids MI, US
Ross L. Demerly - Owosso MI, US
Daniel G. Hansen - Holt MI, US
Christopher B. Witt - Lansing MI, US
John Van Camp - Okemos MI, US

Assignee:

Munters Corporation - Mason MI

International Classification:

F24F 11/04
F04B 35/04
F04B 49/06

US Classification:

454256, 4174231, 417 441

Abstract:

A fan for use in agriculture which has a BLDC motor which allows for varying the speed of the fan to vary the airflow rate of the fan and vary the efficiency of the fan. A ventilation system for use in a livestock confinement building to maximize a rate of growth of the livestock. A process for maximizing the growth of livestock in a livestock confinement building by controlling the airflow in the livestock confinement building.

US Patent:

20210267527, Sep 2, 2021

Filed:

May 14, 2021

Appl. No.:

17/321167

Inventors:

- Minneapolis MN, US
Xusheng ZHANG - Shoreview MN, US
Vinod SHARMA - Maple Grove MN, US
Vladimir P. NIKOLSKI - Blaine MN, US
Michael B. TERRY - Camas WA, US
Scott A. HARELAND - Lino Lakes MN, US
Daniel L. HANSEN - Castle Rock CO, US
Donna M. SALMI - Minneapolis MN, US

International Classification:

A61B 5/363
A61B 5/316
A61B 5/00
A61N 1/37

Abstract:

In situations in which an implantable medical device (e.g., a subcutaneous ICD) is co-implanted with a leadless pacing device (LPD), it may be important that the subcutaneous ICD knows when the LPD is delivering pacing, such as anti-tachycardia pacing (ATP). Techniques are described herein for detecting, with the ICD and based on the sensed electrical signal, pacing pulses and adjusting operation to account for the detected pulses, e.g., blanking the sensed electrical signal or modifying a tachyarrhythmia detection algorithm. In one example, the ICD includes a first pace pulse detector configured to obtain a sensed electrical signal and analyze the sensed electrical signal to detect a first type of pulses having a first set of characteristics and a second pace pulse detector configured to obtain the sensed electrical signal and analyze the sensed electrical signal to detect a second type of pulses having a second set of characteristics.

US Patent:

20190183374, Jun 20, 2019

Filed:

Feb 19, 2019

Appl. No.:

16/278960

Inventors:

- Minneapolis MN, US
Xusheng ZHANG - Shoreview MN, US
Vinod SHARMA - Maple Grove MN, US
Vladimir P. NIKOLSKI - Blaine MN, US
Michael B. TERRY - Camas WA, US
Scott A. HARELAND - Lino Lakes MN, US
Daniel L. HANSEN - Castle Rock CO, US
Donna M. SALMI - Minneapolis MN, US

International Classification:

A61B 5/0464
A61B 5/00
A61B 5/04
A61N 1/39
A61N 1/37

Abstract:

In situations in which an implantable medical device (e.g., a subcutaneous ICD) is co-implanted with a leadless pacing device (LPD), it may be important that the subcutaneous ICD knows when the LPD is delivering pacing, such as anti-tachycardia pacing (ATP). Techniques are described herein for detecting, with the ICD and based on the sensed electrical signal, pacing pulses and adjusting operation to account for the detected pulses, e.g., blanking the sensed electrical signal or modifying a tachyarrhythmia detection algorithm. In one example, the ICD includes a first pace pulse detector configured to obtain a sensed electrical signal and analyze the sensed electrical signal to detect a first type of pulses having a first set of characteristics and a second pace pulse detector configured to obtain the sensed electrical signal and analyze the sensed electrical signal to detect a second type of pulses having a second set of characteristics.

US Patent:

20180034392, Feb 1, 2018

Filed:

Oct 12, 2017

Appl. No.:

15/782506

Inventors:

- Mason MI, US
Ross L. Demerly - Owosso MI, US
Daniel G. Hansen - Holt MI, US
Chistopher B. Witt - Lansing MI, US
John Van Camp - Okemos MI, US

International Classification:

H02P 6/20
H02K 5/18
H02K 1/18
H02K 1/14
F04D 27/00
H02K 1/30
H02K 1/27

Abstract:

A fan for use in agriculture which has a BLDC motor which allows for varying the speed of the fan to vary the airflow rate of the fan and vary the efficiency of the fan. A ventilation system for use in a livestock confinement building to maximize a rate of growth of the livestock. A process for maximizing the growth of livestock in a livestock confinement building by controlling the airflow in the livestock confinement building.