# US 4,392,381 A · Driver bar assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,392,381 A - Document ID: US4392381A - Status: Granted - Kind: A - Application number: 06/291,333 - Filed: 1981-08-10 - Granted: 1983-07-12 - Earliest claimed: 1981-08-10 - Assignees: Kimball Industries, Inc. - Inventors: Robert W. Martin - Web page: https://patentgrep.com/patent/US4392381A ## CPC - B06B 3/00: Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency - B06B: METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, {e.g.} FOR PERFORMING MECHANICAL WORK IN GENERAL (for particular applications, see the relevant subclasses, e.g. B07B1/40, B23Q17/12, B24B31/06; measurement of mechanical vibrations G01H; in direction finding, locating, distance or velocity measuring G01S; {generating seismic energy G01V1/02}; control of mechanical vibrations in general G05D; sound-producing devices, e.g. bells, sirens, whistles G10K, {e.g. methods or devices for transmitting, conducting, or directing sound in general G10K11/00}; generation of electrical oscillations H03B; electromechanical resonators in general H03H; electromechanical transducers {for communication techniques, e.g. microphones, speakers} H04R) ## Abstract Driver bar assembly for vibration test apparatus, comprising a bar element and a retainer element separably connected thereto; the bar element having a normally vertically disposed base attachable to a pivotally mounted shaker head and a normally horizontally disposed flange adapted to lie in a common plane with and spaced from a slip plate to be driven by the shaker head; the retainer element having a first bracket in which the bar element flange is bracketable, and a second bracket in which the slip plate is bracketable opposite the bar element flange, whereby the flange and slip plate spacing is bridged in vibration transmitting relation between the shaker head and the slip plate; the retainer element being separable from the slip plate and the bar element flange without relative movement of the slip plate and shaker head, the bar element and shaker head being freely angularly movable relative to the slip plate in the separated condition of the retainer element and the bar element. ## Claims ### Claim 1 Driver bar assembly comprising a bar element and a retainer element separably connected thereto; said bar element having a normally vertically disposed base attachable to a pivotally mounted shaker head and a normally horizontally disposed flange adapted to lie in a common plane with and spaced from a slip plate to be driven by said shaker head; said retainer element having first bracket means in which said bar element flange is bracketable, and second bracket means in which said slip plate is bracketable opposite said bar element flange, whereby said flange and slip plate spacing is bridged in vibration transmitting relation between said shaker head and said slip plate; said retainer element being separable from said slip plate and said bar element flange without relative movement of said slip plate and shaker head, said bar element and shaker head being freely angularly movable relative to said slip plate in the separated condition of said retainer element and said bar element. ### Claim 2 (depends on 1) Driver bar assembly according to claim 1, in which said bar element base defines a distributed plurality of fastening means vertically spaced from said flange for fastening together said bar element base and said shaker head. ### Claim 3 (depends on 1) Driver bar assembly according to claim 1, in which said bar element flange and said retainer element define mutually registerable cooperating fastening means. ### Claim 4 (depends on 1) Driver bar element according to claim 1, in which said retainer element defines fastening means registerable and cooperative with slip plate fastening means. ### Claim 5 (depends on 1) Driver bar assembly according to claim 1, in which said retainer element comprises a body having an H-shaped cross-section, said first and second brackets being defined by respective pairs of the legs of the body. ### Claim 6 (depends on 1) Vibration test apparatus comprising the driver bar assembly according to claim 1, and including also a shaker head attached to said driver bar assembly in vibration transmitting relation. ### Claim 7 (depends on 1) Vibration test apparatus comprising the driver bar assembly according to claim 1, and including also a slip plate attached to said driver bar assembly in vibration receiving relation. ### Claim 8 (depends on 1) Vibration test apparatus comprising the driver bar assembly according to claim 1, and including also a shaker head and slip plate coupled together in vibration transmitting relation by said driver bar assembly. ### Claim 9 (depends on 1) Driver bar assembly according to claim 1, in which said retainer element comprises a body, said retainer element first bracket means comprises a pair of laterally and longitudinally extended legs cantilevered in parallel from a first side of said body and relatively spaced to slidably bracket said bar element flange, said legs defining opposed sets of fastener pin receiving apertures arranged to register with cooperating pin passing apertures on said bar element flange, whereby said legs are fastenable in vibration transmitting relation to said bar element flange. ### Claim 10 (depends on 1) Driver bar assembly according to claim 1, in which said retainer element comprises a body, said retainer element second bracket means comprises a pair of laterally and longitudinally extended legs cantilevered in parallel from a second side of said body and relatively spaced to slidably bracket said bar element flange, said legs defining opposed sets of fastener pin receiving apertures arranged to register with cooperating pin passing apertures on an edge margin of said slip plate, whereby said legs are fastenable in vibration transmitting relation to said slip plate. ### Claim 11 (depends on 1) Driver bar assembly according to claim 1, in which said retainer element comprises an H shaped body, said retainer element first and second bracket means comprising laterally and longitudinally extended extended leg pairs oppositely cantilevered in parallel from first and second sides of said body and relatively sized and spaced to slidably bracket either said bar element flange or the edge margin of said slip plate, said leg pairs defining opposed sets of fastener pin receiving apertures arranged to register with cooperating pin passing apertures on said bar element flange or said slip plate edge margin bracketed thereby, whereby said body is leg-fastenable in vibration transmitting relation to said slip plate and said bar element. ### Claim 12 (depends on 11) Driver bar assembly according to claim 11, including also pins fastening said retainer bar, slip plate and bar element flange together in vibration transmitting relation respectively at said apertures. ### Claim 13 (depends on 11) Driver bar assembly according to claim 11 in which said retainer element is symmetrical about its longitudinal axis. ### Claim 14 (depends on 13) Driver bar assembly according to claim 13 in which said retainer element is symmetrical about its transverse axis. ### Claim 15 (depends on 14) Driver bar assembly according to claim 14, including also split sleeve pins fastening said retainer bar, slip plate and bar element flange together in vibration transmitting relation. ### Claim 16 (depends on 14) Vibration test apparatus comprising the driver bar assembly according to claim 14, and including also a shaker head attached to said driver bar assembly in vibration transmitting relation. ### Claim 17 (depends on 14) Vibration test apparatus comprising the driver bar assembly according to claim 14, and including also a slip plate attached to said driver bar assembly in vibration receiving relation. ### Claim 18 (depends on 14) Vibration test apparatus comprising the driver bar assembly according to claim 14, and including also a shaker head and slip plate coupled together in vibration transmitting relation by said driver bar assembly. ### Claim 19 (depends on 14) Driver bar assembly according to claim 14, in which said bar element base defines a horizontally and vertically distributed plurality of fastening apertures above and below said flange for receiving shaker head bolts for fastening together said bar element base and said shaker head. ### Claim 20 (depends on 19) Driver bar assembly according to claim 19, in which said retainer element is endwise slidable onto said bar element flange and off said flange freely of relative movement of said bar element and said slip plate. ### Claim 21 (depends on 20) Driver bar element according to claim 20, in which said retainer element is endwise slidable onto said slip plate edge margin and off said slip plate freely of relative movement of said slip plate and said bar element.