Patents by Inventor Motoshige Akatsu

Motoshige Akatsu 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).

  • Concrete drill
    Patent number: 7308949
    Abstract: A concrete drill for drilling concrete or the like by a diamond bit (5) attached to a front end of a bit drive shaft (4) projected forward from a main body (1) by driving to rotate the bit drive shaft (4) by a drive source (2) contained in the main body (1) in which the main body (1) is provided with a vibrating apparatus (8) for exerting a vibrating force a magnitude which is pulsated to change along the bit drive shaft (4) to the main body (1).
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: December 18, 2007
    Assignee: Max Co., Ltd.
    Inventors: Kigen Agehara, Motoshige Akatsu, Naohide Murakami
  • Concrete drill
    Patent number: 7204321
    Abstract: A concrete drill for drilling concrete or the like by a diamond bit (5) attached to a front end of a bit drive shaft (4) projected forward from a main body (1) by driving to rotate the bit drive shaft (4) by a drive source (2) contained in the main body (1) in which the main body (1) is provided with a vibrating apparatus (8) for exerting a vibrating force a magnitude which is pulsated to change along the bit drive shaft (4) to the main body (1).
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: April 17, 2007
    Assignee: Max Co., Ltd.
    Inventors: Kigen Agehara, Motoshige Akatsu, Naohide Murakami
  • Concrete drill
    Publication number: 20070033811
    Abstract: A concrete drill for drilling concrete or the like by a diamond bit (5) attached to a front end of a bit drive shaft (4) projected forward from a main body (1) by driving to rotate the bit drive shaft (4) by a drive source (2) contained in the main body (1) in which the main body (1) is provided with a vibrating apparatus (8) for exerting a vibrating force a magnitude which is pulsated to change along the bit drive shaft (4) to the main body (1)
    Type: Application
    Filed: October 6, 2006
    Publication date: February 15, 2007
    Inventors: Kigen Agehara, Motoshige Akatsu, Naohide Murakami
  • Concrete drill
    Publication number: 20050217900
    Abstract: A concrete drill for drilling concrete or the like by a diamond bit (5) attached to a front end of a bit drive shaft (4) projected forward from a main body (1) by driving to rotate the bit drive shaft (4) by a drive source (2) contained in the main body (1) in which the main body (1) is provided with a vibrating apparatus (8) for exerting a vibrating force a magnitude which is pulsated to change along the bit drive shaft (4) to the main body (1).
    Type: Application
    Filed: January 14, 2003
    Publication date: October 6, 2005
    Inventors: Kigen Agehara, Motoshige Akatsu, Naohide Murakami
  • Bonding member and gypsum board mounting method using the same
    Publication number: 20020002805
    Abstract: A bonding member 1 comprising a metallic plate 2 formed as a small piece onto which a hot melt adhesive layer 3 is formed at least one side of said metallic plate 2, and a gypsum board mounting method for mounting a gypsum board 5 using the bonding member 1, comprising: fixing said bonding member 5 temporarily; pushing said gypsum board 5, heating the metallic plate 2 with electromagnetic induction to melt said hot melt adhesive layer 3; and thereby allowing the gypsum board 5 to be bonded easily without noise. The bonded gypsum board 5 can be recycled because it can be peeled off easily with melting the adhesive layer 3 without damage of the board.
    Type: Application
    Filed: July 2, 2001
    Publication date: January 10, 2002
    Applicant: Max Co., LTD.
    Inventors: Masakatsu Yamaguchi, Keijiro Murayama, Mitsuhiro Takatsuru, Takashi Takayama, Tsutomu Shioya, Hiroshi Shiokawa, Hiroyuki Nishikawa, Nobuaki Sekiguchi, Takumi Harigaya, Kigen Agehara, Motoshige Akatsu