Patents by Inventor Piia LINNAINMAA

Piia LINNAINMAA 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).

  • Patent number: 9284162
    Abstract: A lifting hook includes a hook body with a hook stem and a hook tip; a safety latch with a fastening end and a free latch end, the fastening end of the safety latch being pivotally fastened close to the stem so as to be moved between an open position and a closed position, the safety latch being in its open position substantially against the inside of the hook body in a position that leaves a hook jaw free while in the closed position the latch end extends across the hook jaw to the hook tip, closing the jaw on the inside thereof; and an actuator for actuating the safety latch, the actuator including a spring arranged between the safety latch and the hook body and forcing the latch end into the closed position, a locking pawl structure and a cam surface arrangement for locking the safety latch into the open position, and a release extending across the jaw for releasing the safety latch from the open position. A safety latch for a lifting hook is also disclosed.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: March 15, 2016
    Assignee: KONECRANES PLC
    Inventors: Ekku Rytkönen, Antti Niskala, Piia Linnainmaa, Marko Lyden, Richard Rappu
  • Publication number: 20150329330
    Abstract: A lifting hook includes a hook body with a hook stem and a hook tip; a safety latch with a fastening end and a free latch end, the fastening end of the safety latch being pivotally fastened close to the stem so as to be moved between an open position and a closed position, the safety latch being in its open position substantially against the inside of the hook body in a position that leaves a hook jaw free while in the closed position the latch end extends across the hook jaw to the hook tip, closing the jaw on the inside thereof; and an actuator for actuating the safety latch, the actuator including a spring arranged between the safety latch and the hook body and forcing the latch end into the closed position, a locking pawl structure and a cam surface arrangement for locking the safety latch into the open position, and a release extending across the jaw for releasing the safety latch from the open position. A safety latch for a lifting hook is also disclosed.
    Type: Application
    Filed: December 17, 2013
    Publication date: November 19, 2015
    Applicant: KONECRANES PLC
    Inventors: Ekku RYTKÖNEN, Antti NISKALA, Piia LINNAINMAA, Marko LYDEN, Richard RAPPU