Shaker head expander
OwnerRobert W. Martininventor
Life of this patent
Estimating the term…
Abstract
A structure to provide increased surface area on the head of a shaker used for vibrational testing. The structure includes a base plate for attachment to the head of the shaker and a larger expanded head connected thereto by a frustoconical structure surrounding a cylindrical structure surrounding a spoke structure, all designed to increase the vibrational frequency at which undesired vibratory modes appear in the surface of the expanded head which otherwise can provide nonuniform vibration loading to the items attached thereto during testing. The structure also includes improved means for attachment to the shaker.
Claims20
An expander structure for increasing the available test surface area of a vibrational tester including:
- a test plate having:
- a first surface with a predetermined effective diameter for supporting items to be vibrationally tested;
- and
- a second opposite surface;
- a cylinder having:
- a first end securely attached to said second opposite surface of said test plate;
- an inner cylindrical surface;
- an outer cylindrical surface;
- and
- a second end opposite from said first end, said second end having:
- a second end surface;
- a plurality of walls attached to said inner cylindrical surface of said cylinder, each having:
- a first surface securely attached to said second opposite surface of said test plate;
- and
- a second surface planar to said second end of said cylinder;
- and
- a frustoconical member connected between said outer cylindrical surface of said cylinder and said second opposite surface of said test plate.
An expander structure for increasing the available test surface area of a vibrational tester including:
- a test plate having:
- a first surface for supporting items to be vibrationally tested;
- and
- a second opposite surface;
- a central support member having:
- a first end securely attached to said second opposite surface of said test plate;
- an inner surface;
- an outer surface;
- and
- a second end opposite from said first end, said second end having:
- a second end surface;
- a plurality of ribs attached to said inner surface of said central support member, each having:
- a first surface securely attached to said second opposite surface of said test plate;
- and
- a second surface planar to said second end of said central support member;
- and
- a frustoconical member connected between said outer surface of said central support member and said second opposite surface of said test plate.
Dependencies are inferred from the claim text.