US 8,505,374 C1 (12,930th)
Portable on vehicle dynamometer
Paul N. Arseneau, Fort Worth, TX (US)
Filed by Paul N. Arseneau, Fort Worth, TX (US)
Assigned to Dynocom Industries, Inc.
Reexamination Request No. 90/019,652, Sep. 9, 2024.
Reexamination Certificate for Patent 8,505,374, issued Aug. 13, 2013, Appl. No. 12/635,694, Dec. 10, 2009.
Ex Parte Reexamination Certificate issued on May 30, 2025.
Int. Cl. G01L 3/24 (2006.01)
CPC G01L 3/24 (2013.01)
OG exemplary drawing
AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT:
The patentability of claims 1-2 is confirmed.
Claim 3 is determined to be patentable as amended.
Claims 4-6, dependent on an amended claim, are determined to be patentable.
New claims 7-14 are added and determined to be patentable.
1. A portable on vehicle dynamometer for determining power output from a drive shaft, comprising:
a rigid frame;
a load shaft rotatably coupled to said rigid frame;
an eddy current brake having a stator connected to said rigid frame, and a rotor connected to said load shaft;
a hub coupling secured to a first end of said load shaft and connected directly to the drive shaft for transferring power to the load shaft, wherein said hub coupling, said drive shaft and said load shaft co-axially rotate;
said rigid frame having two outwardly extending support arms, and arm locks which secure said outwardly extending support arms in fixed positions;
support feet assemblies mounting to respective ones of outer ends of said support arms; and
two roller assemblies mounted to a lower end of said rigid frame, providing multidirectional movement of said dynamometer.
3. The portable on vehicle dynamometer according to claim 2, further comprising a stator bearing interiorly secured to said drive [ load ] shaft and exteriorly secured to said stator.
[ 7. A portable on vehicle dynamometer for determining power output from a drive shaft, comprising:
a rigid frame;
a load shaft rotatably coupled to said rigid frame;
an eddy current brake having a stator connected to said rigid frame, and a rotor connected to said load shaft;
a hub coupling secured to a first end of said load shaft and connected directly to the drive shaft for transferring power to the load shaft, wherein said hub coupling, said drive shaft and said load shaft co-axially rotate;
said rigid frame having two outwardly extending support arms, and arm locks which secure said outwardly extending support arms in fixed positions;
support feet assemblies mounting to respective ones of outer ends of said support arms; and
two roller assemblies mounted to a lower end of said rigid frame, providing multidirectional movement and rotating movement of said dynamometer.]
[ 8. The portable on vehicle dynamometer of claim 7 wherein the two roller assemblies allow the dynamometer to change angle relative to the drive shaft.]
[ 9. A portable on vehicle dynamometer for determining power output from a drive shaft, comprising:
a rigid frame;
a load shaft rotatably coupled to said rigid frame;
an eddy current brake having a stator connected to said rigid frame, and a rotor connected to said load shaft;
a hub coupling secured to a first end of said load shaft and connected directly to the drive shaft for transferring power to the load shaft, wherein said hub coupling, said drive shaft and said load shaft co-axially rotate;
said rigid frame having two outwardly extending support arms, and arm locks which secure said outwardly extending support arms in fixed positions;
support feet assemblies mounting to respective ones of outer ends of said support arms; and
two roller assemblies for engaging a ground surface mounted to a lower end of said rigid frame, providing multidirectional movement of said dynamometer.]
[ 10. The portable on vehicle dynamometer of claim 9 wherein the two roller assemblies allow the dynamometer to change angle relative to the drive shaft.]
[ 11. The portable on vehicle dynamometer of claim 9 wherein the two roller assemblies face downward.]
[ 12. The portable on vehicle dynamometer of claim 9 wherein the two roller assemblies allow for rotating movement of the dynamometer.]
[ 13. The portable on vehicle dynamometer of claim 1 further comprising a quick connect assembly mounted on a first end to the load shaft and on a second end to the hub coupling.]
[ 14. The portable on vehicle dynamometer of claim 1 further comprising a double universal joint to provide movement for misalignment, the double universal joint having a hub coupling mounted to a first end and having a second end for coupling to the load shaft.]