# US 2012/0318643 A1 · Spring for a vibratory conveyor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2012/0318643 A1 - Document ID: US20120318643A1 - Status: Published application - Kind: A1 - Application number: 13/134,894 - Filed: 2011-06-20 - Published: 2012-12-20 - Earliest claimed: 2011-06-20 - Assignees: Key Technology, Inc. - Inventors: David W. Hufford - Web page: https://patentgrep.com/patent/US20120318643A1 ## CPC - B65G 27/10: Applications of devices for generating or transmitting jigging movements - B65G: TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS (packaging B65B; handling thin or filamentary materials, e.g. paper sheets or thread, B65H; cranes B66C; portable mobile or lifting or hauling appliances, e.g. hoists, B66D; devices for lifting or lowering goods for loading or unloading purposes, e.g. fork-lift trucks, B66F9/00; emptying bottles, jars, casks, barrels or similar containers, not otherwise provided for, B67C9/00; delivering or transferring liquids B67D; filling or discharging vessels for liquefied, solidified or compressed gases F17C; pipe-line systems for fluids F17D) ## Abstract A spring for a vibratory conveyor is described and which includes an elongated substantially planar main body which is mounted on a vibratory conveyor for moving a source of product, and which has a longitudinal axis, and a predetermined spring constant, and wherein the elongated main body can repeatedly flex and twist about the longitudinal axis without substantially degrading the spring constant of the elongated main body. ## Claims ### Claim 1 A spring for a vibratory conveyor, comprising: an elongated substantially planar main body having opposite first and second ends and which are each mounted on a conveyor for moving a source of product along a given path of travel, and wherein the elongated main body has a longitudinal axis, and a predetermined spring constant, and wherein the elongated main body can repeatedly and resiliently flex, and twist about the longitudinal axis without substantially degrading the spring constant of the elongated main body. ### Claim 2 (depends on 1) A spring for a vibratory conveyor as claimed in claim 1, and wherein the elongated main body has central core which is sandwiched between, and adhered to, a pair of spaced, outwardly facing skin surfaces. ### Claim 3 (depends on 2) A spring for a vibratory conveyor as claimed in claim 2, and wherein the central core comprises a multiplicity of elongated, longitudinally oriented, spaced and pretensioned glass fibers which are cured, and encased in an epoxy material. ### Claim 4 (depends on 3) A spring for a vibratory conveyor as claimed in claim 3, and wherein the central core material is about 0.085 inches thick, and has top, and bottom, outwardly facing surfaces which are coated with an adhesive, and which binds the pair of outwardly facing skin surfaces to the central core. ### Claim 5 (depends on 4) A spring for a vibratory conveyor as claimed in claim 4, and wherein the pair of spaced, outwardly facing skin surfaces are each formed of a woven fiberglass weft which is oriented at about 45 degrees relative to the longitudinal axis of the elongated main body, and which is further sandwiched between, and bonded to, overlying layers of longitudinally aligned, spaced and pretensioned glass fibers which are cured and encased within an epoxy material. ### Claim 6 (depends on 4) A spring for a vibratory conveyor as claimed in claim 4, and wherein spring may repeatedly, and resiliently flex and/or twist about the longitudinal axis and simultaneously move along a stroke distance of greater than about ⅜ of an inch. ### Claim 7 (depends on 1) A spring for a vibratory conveyor as claimed in claim 1, and wherein the vibratory conveyor conveys a stream of product along both linear and non-linear paths of travel. ### Claim 8 (depends on 1) A spring for a vibratory conveyor as claimed in claim 1, and wherein the vibratory conveyor conveys a stream of product in a substantially linear direction. ### Claim 9 (depends on 1) A spring for a vibratory conveyor as claimed in claim 1, and wherein the vibratory conveyor conveys a stream of product along a non-linear path of travel. ### Claim 10 A spring for a vibratory conveyor, comprising: an elongated main body having opposite first and second ends, and which further has a longitudinal axis, and wherein the elongated main body has a central core formed of a plurality of substantially longitudinally aligned, spaced, and pretensioned glass fibers which are cured, and encased within, an epoxy material, and wherein the central core has a top and bottom facing surface; a layer of adhesive deposited on the top and bottom facing surface of the central core of the elongated main body; and a top and bottom outwardly facing skin surface which are individually adhered to the top and bottom surface of the central core by the layer of adhesive which is respectively deposited thereon, and wherein the top and bottom outwardly facing skin surfaces are each formed of a woven fiberglass weft which is oriented about 45 degrees relative to the longitudinal axis of elongated main body, and which is further sandwiched between, and bonded to, overlying layers of a multiplicity of longitudinally aligned and pretensioned glass fibers which are cured, and encased within an epoxy material. ### Claim 11 (depends on 10) A spring for a vibratory conveyor as claimed in claim 10, and wherein central core material is about 0.085 inches thick. ### Claim 12 (depends on 10) A spring for a vibratory conveyor as claimed in claim 10, and wherein the top and bottom outwardly facing skin surfaces of the elongated main body each have a thickness dimension of about 0.075 inches. ### Claim 13 (depends on 10) A spring for a vibratory conveyor as claimed in claim 10, and wherein the elongated main body is narrowly rectangular, and planar, and further has a longitudinal length of about 11 inches, and a transverse dimension of about 2.5 inches. ### Claim 14 (depends on 10) A spring for a vibratory conveyor as claimed in claim 10, and wherein a pair of apertures are formed in each of the first and second ends of the elongated main body, and wherein the apertures are sized so as receive a fastener which passes therethrough each of the apertures, and which releasably affixes the elongated main body of the spring to the vibratory conveyor. ### Claim 15 (depends on 10) A spring for a vibratory conveyor as claimed in claim 10, and wherein the elongated main body of the spring has a spring constant, and wherein under normal operating conditions of the vibratory conveyor, the spring can repeatedly flex and and twist about the longitudinal axis without substantially degrading the spring constant of the spring. ### Claim 16 (depends on 10) A spring for a vibratory conveyor as claimed in claim 10, and wherein the vibratory conveyor conveys a stream of products along both linear and non-linear paths of travel. ### Claim 17 (depends on 10) A spring for a vibratory conveyor as claimed in claim 10, and wherein the vibratory conveyor conveys a stream of products in a substantially linear direction. ### Claim 18 (depends on 10) A spring for a vibratory conveyor as claimed in claim 10, and wherein the vibratory conveyor conveys a stream of products in a non-linear path of travel.