Patents by Inventor Shih-Wang Lai

Shih-Wang Lai 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: 5430965
    Abstract: A message display board includes: a writing board embedded on a base plate mounted on a fixing object such as a car, a pen clamped on a pen-holding portion formed on the base plate for writing purpose, a plurality of suction cups which are attached by vacuum on a wall such as a wind shield of a car to present the writing board outwardly to display message written on the writing board, a lamp secured on the base plate for illuminating the writing board to be visible at night time or in dark place, and an eraser detachably embedded in the base plate and being withdrawn from the base plate for erasing the message written on the board to prepare for the next use.
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: July 11, 1995
    Inventor: Shih-Wang Lai
  • Patent number: 5329083
    Abstract: An on-line switch includes a switch housing formed by combining an upper half shell on a lower half shell, a push-button switching device encased in the housing having a push button reciprocatively held in a button holder of the switching device and normally protruding upwardly outwardly beyond the housing for depressibly switching on or off of a power supply through the on-line switch connected between an input cord and an output cord of a power source, an electrically insulative protective cover integrally formed on an outer circumferential surface of the switch housing for completely shielding the switch housing for water proof and for protecting the cords from their damage, and a sealing cap formed as a telescopic bellows and made of electrically insulative elastomer material secured with the button holder of the push-button switching device for sealing the push button held in the switching device in the switch housing for water proof purpose, thereby providing an on-line switch of a power line suitable f
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: July 12, 1994
    Inventor: Shih-Wang Lai
  • Patent number: 5306871
    Abstract: An electrical cord assembly for lighting fixture includes: a main cord connected to a power source, a switch box connected with the main cord secured on a supporting stand, at least a lamp cord branched from the main cord through the switch box and connected to at least a lamp secured on the stand through a lamp adapter, wherein the switch box is formed by integrally molding an outer jacket on an inner box for ensuring a water proof property for the power connection, and the lamp adapter is also well shielded for water proof purpose, thereby forming an electrical cord system easily assembled for saving assembly labor cost and for providing a lighting fixture for a quicker lighting service.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: April 26, 1994
    Inventor: Shih-Wang Lai
  • Patent number: 5272611
    Abstract: An electrical cord assembly for lighting fixture includes: a main cord connected to a power source, an illumination adjusting switch box connected with the main cord secured on a supporting stand, at least a lamp cord branched from the main cord through the switch box and connected to at least a lamp secured on the stand through a lamp adapter, wherein the switch box is formed by integrally molding an outer jacket on an inner box for ensuring a water proof property for the power connection, and the inner box having a plurality of fins protruding outwardly from the jacket, and the lamp adapter is also well shielded for water proof purpose, thereby forming an electrical cord system easily assembled for saving assembly labor cost and for providing a lighting fixture for a quicker lighting service, and for effectively dissipating heat in the box for enhancing electrical safety.
    Type: Grant
    Filed: October 28, 1992
    Date of Patent: December 21, 1993
    Inventor: Shih-Wang Lai
  • Patent number: 5082221
    Abstract: An adjustable leg assembly includes a vertical tubular support radially pivotally connected with a plurality of legs by a connector, in which a positioning pin having two end portions protruding sidewardly beyond two slots radially formed in two bifurcate plates formed in each forked joint secured on an inner end of each leg, and is adjustably resiliently engageable with any one recess of a plurality of positioning recesses formed in an arcuate cam portion of an arcuate lug radially formed on the connector so that each positioning pin can be symmetrically pulled or actuated by a user's fingers for conveniently adjusting a height of each leg of the vertical support.
    Type: Grant
    Filed: January 3, 1991
    Date of Patent: January 21, 1992
    Inventor: Shih-Wang Lai
  • Patent number: D364312
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: November 21, 1995
    Inventor: Shih-Wang Lai