Supports: racks – Special article – Stacked articles
Patent
1987-09-25
1989-04-18
Gibson, Jr., Robert W.
Supports: racks
Special article
Stacked articles
211 541, 211 591, A47F 500
Patent
active
048218944
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention pertains to a return mechanism for pushing packaged products to the ends of double display pegs in self-service shops.
The use of return mechanisms to allow shoppers to easily identify and remove items or objects suspended from display pegs is well known. In general, these are compressive spring-loaded mechanisms which are guided by the pegs.
2. Background Art
Return mechanisms are commonly employed and we will mention herein those described in the following patents or patent applications:
French patent application FR-A-2 570 151 pertaining to a packaged product return mechanism, comprising essentially a spring made up of alternate coils of two different diameters and guided by one or several rods introduced between the large and small diameter coils, and supporting the item which is pushed to the front.
French Pat. No. FR-A-2 527 913 pertaining to a spring-loaded mechanism designed to push items suspended on a single peg or double pegs frontwards by means of a vertical sliding plate; each peg embodies a spring-type compressive element, stacked up and sliding freely over the peg, the rear end of the element resting on a bush previously slipped onto each peg and the front end of the element fitting into a slide running along on the peg and secured to the plate, which acts as a thrust device.
U.S. Pat. No. 4,475,658 pertaining to a packaged article return mechanism, comprising essentially a tapered compression spring, guided by a peg passing through the coils and supporting the items, which are continually pushed to the front.
The mechanisms described in patents FR-A-2570151 and U.S. Pat. No. 4,475,658 are not capable of exerting a return action on any packet over a significant length on account of the spring layout and, furthermore, they entail the manufacture of special springs.
The patent request FR-A-2.527.913 describes a mechanism of quite complex design that significantly limits the useful length of each peg due to the presence of the spring and of the slide.
The U.S. Pat. No. 2,311,749 describes a hair-pin distributor, comprising several hair-pin support pegs, each of which has a device with a spring in tension (extended) coupled to a cross-piece for pushing the hair-pins continually against a stop at one end of each peg. In order not to reduce the useful length of the pegs, each spring pulls a sliding thrust plate towards the aforesaid stop by means of a 180.degree. return roller mounted on a shaft located beyond the stop.
The spring and its return roller are positioned in a vertical plane parallel to the peg and outside the hair-pin travel; this arrangement increases the overall dimensions of the assembly and, a priori, restricts the useful length.
SUMMARY OF THE INVENTION
The purpose of the present invention is to overcome these drawbacks since, as described in the claims, it solves the difficulties by pushing the bags to the front of the double pegs by means of a simple arrangement not requiring the manufacture of special springs and guiding the packages smoothly along the full length of the aforesaid pegs without any risk of jamming and without increasing the overall size. This is achieved by a layout wherein the return spring and its 180.degree. roller are mounted flat between the two arms of a double peg and within the space delimited by the cutout of the package attachment tab, and wherein the sliding thrust plate is made from a U-shaped metal sheet having edges turned inwards at 90.degree. underneath and edges turned outwards at 90.degree. on the front, thereby transmitting the thrust load onto the packets along the peg axis.
The advantages resulting from this invention consist mainly of the fact that, when shoppers remove a packet off the peg, the return spring pushes the sliding thrust plate and the remaining packets to the nose of the peg, thereby taking up the space so created; and the fact that the size of the sliding plate lugs, spread laterally towards the front, is such that the spring-induced thrust actin
REFERENCES:
patent: 2311749 (1943-02-01), Hanf
patent: 2939619 (1960-06-01), Levesque
patent: 4475658 (1984-10-01), Roberts
Gibson , Jr. Robert W.
Societe Vynex S.A.
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