Patents Examined by Kimberly Asher
  • Attachment for personal protective respirator
    Patent number: 4832011
    Abstract: An attachemnt for use in testing the fit of a personal protective respirator, i.e. a mask, in situ on the face of the user. The attachment is further useful in testing combinations of respirators and filters in the presence of challenge atmospheres in a rapid and efficient manner.
    Type: Grant
    Filed: January 21, 1988
    Date of Patent: May 23, 1989
    Assignee: Innovative Engineering, Inc.
    Inventor: Ewald U. Busch
  • Motorized vibrator with reciprocating motion
    Patent number: 4827914
    Abstract: A vibrator is used by pressing a vibrating member vibrated by the action of a driving source onto a shoulder or other parts of the body. A space is defined within the vibrating member, and an idler is movably disposed within the space. The idler may be composed of, for example, a solid cylindrical body, an elastically deformable cylindrical body, or a powdery or granular material.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: May 9, 1989
    Assignee: Keitatsu Co., Ltd.
    Inventor: Mitsuo Kamazawa