Patents by Inventor Mun-Hay Ngai

Mun-Hay Ngai 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: 4347595
    Abstract: The record player comprises a container, a turntable mounted in the container and rotatable by an electric motor, a speaker movable about a pivot towards the turntable under the bias of a spring, and a tone arm having a stylus and being movable with the speaker towards the turntable against the bias of a second spring so as to engage a record in use on the turntable. The second spring biases the tone arm radially outwardly of the turntable. The turntable has a central upstanding boss and a reset member is mounted for angular movement relative to the boss about the axis of the boss. The reset member and the upper end of the boss have cam surfaces biased into engagement with each other by a third spring.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: August 31, 1982
    Inventor: Mun-Hay Ngai
  • Patent number: 4189155
    Abstract: A record player suitable for a toy and comprising a container, a cover therefor, a turntable rotatably mounted on said cover, an electric motor in said container for driving the turntable, a speaker in said container, first spring means pivotably biasing the speaker towards the turntable, a tone arm having a stylus, second spring means biasing the tone arm away from the turntable and radially outwardly thereof, said tone arm being movable with said speaker towards the turntable against the bias of said second spring means for engaging a record on the turntable, switch means operable by said tone arm as the tone arm moves towards the center of the turntable to break a circuit supplying driving current to the motor, operating means for pivoting the speaker away from the turntable against the bias of the first spring means so as to allow the second spring means to move the tone arm away from and radially outwardly of the turntable.
    Type: Grant
    Filed: August 7, 1978
    Date of Patent: February 19, 1980
    Inventor: Mun-Hay Ngai
  • Patent number: 4118037
    Abstract: A record player comprising a container, a cover attached to said container, a turntable rotatably mounted on said cover, a record on said turntable and having a relatively deep groove at the end of its playing side, an electric motor in said container for driving said turntable mounted in said container and being movable substantially axially towards the turntable under a spring bias, a tone arm having a stylus movable with the speaker towards the turntable so as to engage a record on the turntable, a switch operable by the speaker as the speaker moves towards the turntable to break a circuit supplying driving current to the motor, the switch being operated only as the cover is opened or the stylus drops into a said relatively deep groove at the end of the playing side of the record.
    Type: Grant
    Filed: April 29, 1977
    Date of Patent: October 3, 1978
    Inventor: Mun-Hay Ngai