Patents by Inventor Hew Cosmo McDonald

Hew Cosmo McDonald 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: 8297410
    Abstract: A pit platform (10) within a pit (11) located in a floor, having a deck (12) that can be raised and lowered by a lifting means (14) between a raised position in which the deck is substantially level with the floor and a second position in which the deck is beneath the level of the floor. The deck is supported by a plurality of cables (18) controlled by the lifting means to effect substantially vertical movement of the deck within the pit. A method of moving the deck between the raised and second positions is also described. The pit platform has particular application to a workshop, enabling workers standing on the platform to position themselves at a comfortable height below a vehicle that is being worked upon. In the raised position the platform provides a safety cover for the pit.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: October 30, 2012
    Inventor: Hew Cosmo McDonald
  • Publication number: 20090166131
    Abstract: A pit platform (10) within a pit (11) located in a floor, having a deck (12) that can be raised and lowered by a lifting means (14) between a raised position in which the deck is substantially level with the floor and a second position in which the deck is beneath the level of the floor. The deck is supported by a plurality of cables (18) controlled by the lifting means to effect substantially vertical movement of the deck within the pit. A method of moving the deck between the raised and second positions is also described. The pit platform has particular application to a workshop, enabling workers standing on the platform to position themselves at a comfortable height below a vehicle that is being worked upon. In the raised position the platform provides a safety cover for the pit.
    Type: Application
    Filed: June 2, 2006
    Publication date: July 2, 2009
    Inventor: Hew Cosmo McDonald