Patents Assigned to WA1 Designs Limited
  • Safety knife
    Patent number: 8839523
    Abstract: A safety knife comprises a knife body (10), a blade carrier (16) movable within the knife body (10) between a retracted position and an extended position, biasing means (24) urging the blade carrier (16) towards its retracted position, latch means to latch the blade carrier (16) in its extended position, and a weight (36) movable along a passage (32) relative to the knife body (10) and engageable with release means (40) to release the latch means.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: September 23, 2014
    Assignees: WA1 Designs Limited, The Safety Knife Co., Ltd.
    Inventors: William Ireland, Peter Jonathan Marshall
  • Safety Knife
    Publication number: 20120017444
    Abstract: A safety knife comprises a knife body (10), a blade carrier (16) movable within the knife body (10) between a retracted position and an extended position, biasing means (24) urging the blade carrier (16) towards its retracted position, latch means to latch the blade carrier (16) in its extended position, and a weight (36) movable along a passage (32) relative to the knife body (10) and engageable with release means (40) to release the latch means.
    Type: Application
    Filed: February 2, 2010
    Publication date: January 26, 2012
    Applicants: THE SAFETY KNIFE CO. LTD., WA1 DESIGNS LIMITED
    Inventors: William Ireland, Peter Jonathan Marshall
  • Knife
    Patent number: 7958639
    Abstract: A knife includes a knife body defining a channel across which extends at least part of the cutting edge of a blade. The channel having has a base region located behind the cutting edge in the cutting direction. The knife body is provided, adjacent the base region, with flow passages on opposing sides thereof, the flow passages being out of alignment with one another.
    Type: Grant
    Filed: May 16, 2005
    Date of Patent: June 14, 2011
    Assignee: WA1 Designs Limited
    Inventor: William Alfred Ireland
  • Knife
    Patent number: 7774943
    Abstract: A knife comprises a body, a feed blade store, a return blade store, a feed path along which a blade can be fed from the feed blade store to an operative position, and from the operative position to the return blade store, and control means operable to ensure that a returning blade is returned to the return blade store.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: August 17, 2010
    Assignee: WA1 Designs Limited
    Inventor: William Alfred Ireland
  • Safety knife
    Patent number: D540647
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: April 17, 2007
    Assignee: WA1 Designs Limited
    Inventor: William Alfred Ireland