Patents by Inventor Phani Krishna KALAPALA

Phani Krishna KALAPALA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Centrifugal pendulum absorber including springs fixed to circumferential edges of masses
    Patent number: 10060504
    Abstract: A centrifugal pendulum absorber is provided. The centrifugal pendulum absorber includes a first pair of masses, a second pair of masses, and a spring extending circumferentially from first notches in the masses of the first pair into second notches in the masses of the second pair. The spring connects the first pair of masses and the second pair of masses and includes a first enlarged end portion extending past an outer diameter of coils of the spring and a second enlarged end portion extending past the outer diameter of the coils of the spring. The first enlarged end portion is connected to the first pair of masses in the first notches without an interference fit and the second enlarged end portion being connected to the second pair of masses in the second notches without an interference fit. A method of forming a centrifugal pendulum absorber is also provided.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: August 28, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Rentfrow, Phani Krishna Kalapala
  • SPRING END CAP WITH IMPROVED RETENTION
    Publication number: 20180010662
    Abstract: A spring end cap includes a central axis, first and second parallel planar ends, and first and second circumferential surfaces. The planar ends are orthogonal to the central axis. An outer diameter of the first planar end is larger than an outer diameter of the second planar end. The first and second circumferential surfaces are disposed about the axis and between the planar ends. The first circumferential surface is disposed between the first planar end and the second circumferential surface. The first circumferential surface has a diameter smaller than a diameter of the second circumferential surface.
    Type: Application
    Filed: July 7, 2017
    Publication date: January 11, 2018
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Felipe de Lima Zocca, Phani Krishna Kalapala, Scott Strong
  • CENTRIFUGAL PENDULUM ABSORBER INCLUDING SPRINGS FIXED TO CIRCUMFERENTIAL EDGES OF MASSES
    Publication number: 20170307047
    Abstract: A centrifugal pendulum absorber is provided. The centrifugal pendulum absorber includes a first pair of masses, a second pair of masses, and a spring extending circumferentially from first notches in the masses of the first pair into second notches in the masses of the second pair. The spring connects the first pair of masses and the second pair of masses and includes a first enlarged end portion extending past an outer diameter of coils of the spring and a second enlarged end portion extending past the outer diameter of the coils of the spring. The first enlarged end portion is connected to the first pair of masses in the first notches without an interference fit and the second enlarged end portion being connected to the second pair of masses in the second notches without an interference fit. A method of forming a centrifugal pendulum absorber is also provided.
    Type: Application
    Filed: April 21, 2016
    Publication date: October 26, 2017
    Inventors: Peter RENTFROW, Phani Krishna KALAPALA