DEVICE FOR HOLDING A BAG OR THE LIKE IN PLACE AND FOR DISTRIBUTING THE WEIGHT OF THE BAG UPON THE BODY DURING ACTIVE MOVEMENT

Abstract: The invention is intended for use with purses, pouches, bags, haversacks, document holders, etc., and is designed to hold the bag or holder and its contents securely in place during active movement, to distribute the weight of the bag over the body, and to effectively dampen heavier blows. The device has an elastic belt (D) which is fitted around the waist and a shoulder strap (A). There are fastenings along the belt at points (F and B). The bag attaches to the belt and to the strap and slides freely along the belt. The bag is placed most conveniently at the front of the body.

Description: Device for Holding a Bag or the Like in Place and for Distributing the weight of the bag upon the Body during active Movement. Description The motion of a person running is a continuous upward- downward movement. A weight carried in a bag affects the motion of the bag, and thereby the body, by bringing the following forces into play: a) the body has completed its downward movement and begins its upward movement from the lowest point; Fdn = Ft + Fi - Ff = m (g+Aup) + m W2dn/2S - Ff (1) b) the body begins to descend from the highest point; Fup = -Ft + Fi - Ff = m (g-Adn) + m W2up/2S - Ff (2) where: Ft = gravitational force Fi = inertial force Ff = friction Aup = acceleration of the body in upward movement Adn = acceleration of the body in downward movement Wup = speed of the weight in upward movement Wdn = speed of the weight in downward movement Wm = the mass of the weight s - represents discord, or displacement, where inertial forces act to halt the downward or upward movement of the weight and direct it upward or downward again. When these forces become sufficiently strong the weight and the bag begin to move relative to the body. when displacement S becomes sufficiently great the weight creates a discord relative to the motion of the body. In this way the weight and the bag fall out of step with the motion of the body which the carrier experiences as an unpleasant bouncing movement. Displacement s becomes even greater. The invention envisages a device which conforms to the introduction of patent requirements 1, 4, and 5. The purpose of the invention is to keep displacement S at so low a level as to not disturb the carrier. Ordinar- ily, the weight would be securely fastened to the body. The invention designed according to requirement 1 or a subsequent requirement secures the position of the weight in the bag (Fig. 2), partly or entirely, and distributes the pressure of the bag upon the device and thereby upon the body. When the mass of the weight is increased or the carrier begins to run instead of walk, the balance among Fdn, Fup, and the positioning forces may become disrupted. ith bags ordinarily in use it would be necessary to take the bag off and open the buckles to adjust the length of the belt or strap in order to fasten the bag more securely to the body. In such cases one must usually hold the weight or bag with the hands which are not free. The invention designed according to requirement 1 or a subsequent requirement provides a solution to this problem as it is not necessary to open any buckle or to take the bag off in order to adjust the belt or strap. This is done simply by drawing the elastic belt (D) through the freely sliding fastenings (F) and pressing the belt (D) downward (Fig. 3). In sudden falls or jumps the device will become subjected to considerably greater strains. With de¬ vices commonly in use the εturdiness of the con- struction under such conditions is put to severe test (Fig. 5). The invention designed according to requirement 1 or a subsequent requirement effectively reduces the impact of heavier blows due to the elasticity of the belt (D) . If it is necessary to carry paper or documents (A4), to move about freely and to have one's hands free while having a breast pocket available at the same time, there are at present no known devices which permit insertion or removal of material without first taking off the bag. The invention designed according to requirement 9 provides a solution to this problem. Equations (1) and (2) show that the lower the level of displacement S the greater the forces acting upon the device and thereby the body of the carrier. With the invention designed according to requirement 1 or a subsequent requirement, the weight is pressed tightly against the body thereby reducing the leverage of the weight upon the carrier's shoulder and substantially increasing the friction. This, together with the belt's elasticity, holds the bag and its contents stationary. The counteractive force of the elasticity is proportional to displacement S. In ordinary devices the forces Fup and Fdn affect a relatively limited area of the body. When one runs or jumps the body begins to descend at an acceleration rate of g, whereby a = g. Thus Ft = 0 and the weight strikes the bag and thereby the body upward with inertial force Fi. Equations (1) and (2) show that Fdn is always greater than Fup. Accordingly, a stronger fastening is required when the body moves upward; less strong when the body descends. With ordinary devices the weight is bound equally fast in both cases or the bag is suspended from the belt (D) . The invention designed according to requirement 1 or a subsequent requirement has a greater dampening effect downward. The elastic belt (D) , together with the friction of the shoulder strap (A) , serve to counter the force Fdn on both sides of the body. As the body descends only the belt (D) affects the bag. In this way the same effect is achieved with less pressure and with a lighter fastening to the body. In ordinary devices the weight is not fixed in its position in the bag and will move at a greater speed than the bag. Thus Fi consists of two components, the other being determined by the mass and speed of the weight, with inertial force Fi as a contributing factor, bringing about displacement S. Under the design conforming to requirement 1 or a sub¬ sequent requirement the bag can be produced in a wide variety of forms and sizes for sport, jogging, hiking, as a school bag, a haversack, a portfolio, or as a holder for tools or weapons. The invention may be placed on or under outer clothing, in front or on the back where it functions as a haversack with a shoulder strap. The belt, strap, or bag can be made of any kind of material used in such manufacture.

Claims: CLAIMS 1. The device is designed to hold a bag or holder and its contents securely in place during active movement, to distribute the weight of the bag upon the body, and to effectively dampen heavier impacts. It consists of a waist belt (D), a shoulder strap (A), and a bag or holder (E) . There are fastenings along the belt at points (F) and (B) , and a buckle at point (G) . The lengths of the belt and strap are adjustable. The bag (E) fastens to both the belt and the strap and may be placed most conveniently on the front of the body. CHARACTERISTICS: The belt (D) is elastic. The position of the fastening (B) on the belt is adjustable, and the bag (E) slides freely along the belt (Fig. 1). 2. Version according to requirement 1. CHARACTERISTICS: The belt (D) has two buckles (C) and (G) . 3. Version according to any of the above requirements. CHARACTERISTICS: Strap (A) has a fastening (F) that moves freely along belt (D) . Bag (E) is attached to strap (A). . Version according to requirement 3. CHARACTERISTICS: Bag (E) may be detached from strap (A). 5. Version according to requirements 3 and 4. CHARACTERISTICS: Bag (E) is movable along strap (A). 6. Version according to any of the above requirements. CHARACTERISTICS: Bag (E) attached by means of an elastic fastening. 7. Version according to any of the above requirements. CHARACTERISTICS: Bag (E) is attached to the upper end of the front and the lower end of the rear side (Fig. 2). 8. Version according to any of the above requirements. CHARACTERISTICS: Belt (D) has different elastic properties on the front and rear sides. 9. Version according to any of the above requirements. CHARACTERISTICS: Bag (E) is designed as a paper holder. 10. Version according to requirement 9. CHARACTERISTICS: Paper holder provided with a bulletproof plate. ll. Two versions according to requirements 1, 2, 3, 4, 5, 6 , 7, and 8. CHARACTERISTICS: They are assembled as a single unit. Elastic belt (D) is comprised of two elastic belts which slide freely against one another, both bags sliding freely along the elastic belt (Fig. 4) . 12. Version according to requirement 11. CHARACTERISTICS: Bags assembled together into one. Buckles moved over to opposite side. Designed for use as a haversack (Fig. 5) 13. Version according to any of the above requirements. CHARACTERISTICS: Furnished with a device enabling it to be fastened to trousers. AMENDED CLAIMS [received by the International Bureau on 26 July 1993 (26.07.93); original claims 1-3 replaced by amended claim 1; claims 4-13 amended and renumbered as claims 2-11 (2 pages)] 1. The device is designed to hold a bag or holder and its contents securely in place during activ movement, to distribute the weight of the bag upon the body, and to effectively dampen heavier impacts. It consists of a waist belt (D), a shoulder strap (A), and a bag or holder (E) There are fastenings along the belt at points (F) and (B) and at least one buckle (C,G). The lengths of the belt and strap are adjustable. The bag may be placed most conveniently on the front of the body. character ϊstϊos : The belt (D) is elastic. Bag (E) is attached to strap (A) The positions of the fastenings (F,B) of the shoulder strap (A) and bag (E) on the belt (D) are adjustable and the bag (E) slides freely along the belt. (Fig.l). 2. Device according to claim 1. character ±stics : Bag (E) may be detached from strap (A). 3. Device according to claim 1 and 2 character istics : Bag (E) is movable along strap (A). 4. Device according to any of the above claims. ch racter .i-stics : Bag (E) is attached by means of an elastic fastening, 5. Device according to any of the above claims, characteristics : Bag (E) is attached to the upper end of front and lower end of the rear side (Fig.2). 6. Device according to any of the above claims. ch r cteristics : Belt (D) has different elasticities on the front and rear sides. I. Device according to any of the above claims. characteristics : Bag (E) is designed as a paper holder. S. Device according to claims 7. ch racteri tics : Paper holder provided with a bulletproof plate. 9. Device acoording to claims 1,2,3,4,5 and 6. ch racteri tics : They are assembled as a single unit. Elastic belt (D) is comprised of two elastic belts which slide freely against one another, both bags sliding freely along the elastic belt (Fig. .) 10. Device according to claim 9. ch racteristics : Bags assembled together into one. Buclkes (G) moved over to opposite side. Designed for use as a haversack. (Fig.5.) II. Device according to any of the above claims. characteristics : Furnished with a device enabling it to be fastened to trousers.

Inventors: HATTO JAAN, HATTO, JAAN
Applicants: HATTO JAAN, HATTO, JAAN
Application year: 1993
Main classification: A45F3
IPC codes: A45F3