Patents by Inventor Alvin A. Laplante

Alvin A. Laplante 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).

  • Mechanism to convert angular reciprocal movements into intermittent unidirectional rotary movement
    Patent number: 5701784
    Abstract: There is provided in combination a first member and a second member movable in a reciprocal angular movement, and an articulation between the first member and the second member. The articulation comprises a shaft and a mechanism to convert the angular reciprocal movements of both members into an intermittent unidirectional rotary movement of the shaft. The mechanism of the articulation comprises a pair of ball bearings having each an outer race mounted in a fixed relationship with a respective first or second member, and also having each an inner race mounted in a fixed and coaxial relationship with the shaft. The mechanism further has a pair of flanges, being each mounted adjacent and coaxially a respective bearing, and also in a fixed relationship with a respective first or second member.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: December 30, 1997
    Inventor: Alvin A. Laplante
  • Mechanism to convert angular reciprocal movements into intermittent undirectional rotary movement
    Patent number: 5620232
    Abstract: There is provided in combination a first member and a second member movable in a reciprocal angular movement, and an articulation between the first member and the second member. The articulation comprises a shaft and a mechanism to convert the angular reciprocal movements of both members into an intermittent unidirectional rotary movement of the shaft, The mechanism of the articulation comprises a pair of ball bearings having each an outer race mounted in a fixed relationship with a respective first or second member, and also having each an inner race mounted in a fixed and coaxial relationship with the shaft. The mechanism further has a pair of flanges, being each mounted adjacent and coaxially a respective bearing, and also in a fixed relationship with a respective first or second member.
    Type: Grant
    Filed: July 24, 1995
    Date of Patent: April 15, 1997
    Inventor: Alvin A. Laplante