the invention disclosed herein integrates structural elements of a disposable beverage cup that can be manipulated while practically eliminating or lowering the risk of an affixed beverage cup lid being inadvertently or accidentally detached from the cup . the resulting structure minimizes or eliminates a well - known hazard to the beverage consumer and others while enhancing the ergonomics of the cup and lid assembly . the present invention comprises a disposable beverage cup capable of receiving a disposable lid of the types commonly commercially available . the cup can be made of any common material for beverage cups , but the preferred embodiments are manufactured from resin - covered paper or styrofoam ®. the cup can be manufactured in various heights and diameters . while not part of the invention , the beverage cup of the invention is designed to function with a commercially available disposable lid . such lids are manufactured in varying diameters , depending on the size of cup they are intended to cover . the lids are circular , comprising a planar , raised or semi - circular body and a skirt around the outer circumference , capable of being press fit over the rim of a disposable cup . the lid is removed by upward pressure on the skirt . the cup comprises an outside surface , an inside surface , a top , which is open and characterized by a rim , and a bottom , which is closed . the bottom may further comprise a rim around its outer circumference to enhance stability and prevent over - insertion of others cups when stacked . the cup further comprises a body , which comprises a grasping portion , where a user commonly holds the cup and a ledge . the ledge is a seamless , monolithic protrusion formed concentrically about the vertical axis of , and occurring below , the rim of the cup . the ledge comprises a rounded curb adjacent to the grasping portion of the cup , which terminates in a horizontal plane that protrudes from the outside surface of the cup coaxially about the cup &# 39 ; s axis , the horizontal plane &# 39 ; s outer circumference being concentric with and greater than the outer circumference of the lid . the ledge further comprises a contour , which can be seen in the cup &# 39 ; s cross - section , merging the cup &# 39 ; s circumference about the vertical axis of the cup with the ledge to improve human grip and safe manipulation of the cup . the ledge further comprises one or more indentations in the curb and horizontal plane , shaped to allow contact between the lid &# 39 ; s skirt and the user &# 39 ; s fingers and / or thumb . each of the elements is described in greater detail as follows : the ledge is a monolithic element that concentrically surrounds the upper portion of the cup to act as a barrier between the grasping portion of the cup and the cup &# 39 ; s rim and lid . the ledge is capable of stopping the user &# 39 ; s hand from slipping upward from the grasping portion of the cup towards the rim of the cup . the ledge &# 39 ; s ability to prevent the user &# 39 ; s hand from contacting the lid &# 39 ; s skirt , minimizes or eliminates the risk of the hand accidentally and inadvertently detaching the lid suddenly from the cup , which could result in a potentially hot beverage erupting from the cup . the ledge also guards against the accidental and inadvertent detachment of the lid which commonly results in spillage onto furniture , electronics , appliances , automobile dashboards , automobile cup carriers , gearshifts , and other objects that might come in the path of a cup and lid assembly while it is being manipulated or transported by the server and consumer of the contained beverage . the ledge comprises a rounded curb that acts as a barrier to upward movement of the hand . the curb terminates in a horizontal plane which comprises a flat surface which extends concentrically inward from the curb to a diameter similar to or the same as the cup &# 39 ; s rim , resulting in a circumference greater than the outer lowest circumference of the lid &# 39 ; s skirt . the horizontal plane is located sufficiently close to the cup &# 39 ; s rim so that it abuts the bottom edge of the lid &# 39 ; s skirt . in an alternative embodiment of the invention , the horizontal plane is located lower on the cup &# 39 ; s body by an amount equal or less than the full elastic vertical deflection of the ledge if it were subjected to a sudden impact , resulting in a gap between the horizontal plane and the skirt &# 39 ; s lowest point . the cross - sectional contour of the outside surface of the cup from the grasping portion to the ledge is either a linear or curvilinear change in angle , so that the user can grasp the cup under the ledge ergonomically , safely and comfortably . in two separate embodiments of the invention , the contour either gradually or abruptly changes in angle from the grasping portion of the cup to the ledge depending on the ergonomic or manufacturing considerations . the indentations comprise an interruption of the continuity of the ledge &# 39 ; s circumferential form that allows the lid skirt edge to be contacted by an element , i . e ., finger or thumb , of the human hand for the purpose of controlling removal of the lid from the cup . the preferred embodiment of the invention , as described above , is manufactured from expandable materials such as styrofoam ® or gasified natural fibrous slurries made of natural or synthetic resins stabilized by natural or synthetic starches or proteins . in the primary alternative embodiment depicted in fig6 and 7 , the invention is manufactured from a flat material such as coated and or infused paper that is rolled and pressed to form the cup . the invention could also be manufactured from other materials , such as polyolefin resin or plastic . multiple differences result from the change in materials from expanded to flat . first , the cross - sectional contour is more linear , due to the limitations in thickness of paper - type materials . second , the inside surface of a cup made of expandable material may still be uniform and linear , despite the presence of the ledge on the outside surface thereby allowing the majority of a cup to be inserted into another for stacking of multiple cups for cost effective shipping . the inside surface of the cup manufactured from rolled flat materials has a depression that corresponds to the ledge on the outside surface . fig1 is a frontal elevation of the invention showing : curb ( 1 ); horizontal plane ( 2 ); contour ( 3 ); indentation ( 4 ); cup rim ( 5 ); and the cup ( 6 ). elements ( 1 ) through ( 5 ) are combined as a monolithic form comprising the invention . fig1 depicts the preferred embodiment of the invention manufactured from expandable materials such as styrofoam ® or gasified natural fibrous slurries made of natural or synthetic resins stabilized by natural or synthetic starches or proteins . fig2 is frontal - top perspective of the preferred embodiment of the invention with the addition of a commercially available disposable cup lid ( 7 ) affixed to the cup &# 39 ; s rim ( 5 ) which is of the press fit type commonly used in the field of this invention . the alternative type of lid to cup fit is a rounded skirt fit that is described in fig6 and 7 . the curb ( 1 ) is shown to have its outside diameter greater than that of lid skirt ( 8 ). the ledge ( 13 ) therefore guards against contact between objects and the lid skirt ( 8 ), thereby preventing or reducing the risk of inadvertent , accidental , sudden detachment of the lid ( 7 ) from the cup ( 6 ). the lid skirt ( 8 ) can be in contact with horizontal plane ( 2 ) or be slightly above it , say 1 / 10 ″±, to a degree that maintains the barrier relationship between the ledge ( 13 ) and the lid skirt ( 8 ). the indentation ( 4 ) allows for a digit or thumb of the human hand to make intentional controlled contact with the lid skirt ( 8 ) for intentional controlled removal of the lid ( 7 ) from the cup ( 6 ) via upward pressure with a finger or thumb . the inside surface ( 9 ) of the cup ( 6 ) is uniform , relative to the protruding ledge ( 13 ) on the outside surface ( 10 ), and is a characteristic example of a common cup formed with expandable natural or synthetic resins such as styrofoam ® or gasified natural fibrous slurries stabilized with organic starches or proteins . fig3 is frontal view cross - section of the preferred embodiment of the invention . finger ( s ) and thumb ( 11 ) are shown grasping the cup ( 6 ) at opposite points along the cross - sectional contour ( 3 ) that stops or curbs the finger ( s ) and thumb ( 11 ) from contacting the lid skirt ( 8 ), thereby preventing or reducing the risk of the inadvertent , accidental , sudden detachment of the lid ( 7 ) from the cup ( 6 ). it is a common habit or practice of servers and consumers to grasp lidded cups in similar manner shown herein . commercially available disposable cups allow the finger and thumb and other objects to contact and exert upward force on the lid , thereby causing potential inadvertent , accidental , sudden removal of the lid from the cup . fig4 is frontal view cross - section of the preferred embodiment of the invention . all four fingers and thumb ( 11 ) are shown grasping the cup ( 6 ) around its outside surface . the ledge ( 13 ) stops or curbs objects and elements of the human hand , i . e ., finger ( s ) and thumb ( 11 ) from contacting and exerting upward force on lid skirt ( 8 ), thereby preventing or reducing the risk of the inadvertent , accidental , sudden detachment of the lid ( 7 ) from the cup ( 6 ). the manner in which the human hand grasps the cup ( 6 ) depicted in fig4 is common with consumers in the act of drinking the contained beverage . fig5 is an enlarged detail of the upper left cross - sectional frontal view of the invention with a common lid ( 7 ) affixed . the lid ( 7 ) press fits onto the cup &# 39 ; s rim ( 5 ). the cross - section of the expanded resin embodiment of the cup is depicted . fig5 depicts an alternative embodiment wherein the lid skirt ( 8 ) does not make contact with horizontal plane ( 2 ), as it does in fig4 . the curb ( 1 ), and therefore horizontal plane ( 2 ), is positioned lower relative to the cup &# 39 ; s rim ( 5 ), than in fig4 such that additional separation is created between lid skirt ( 8 ) and the horizontal plane ( 2 ), preventing or reducing the risk of elastic deflection of the ledge ( 13 ) from transmitting upward force against lid skirt ( 8 ). the uniformity of the inside surface ( 9 ) is clearly depicted in fig5 , demonstrating a common result of the manufacture of expanded resin cups . this effect differs from rolled and pressed flat paper or natural resin cups depicted in fig6 and 7 . the curvilinear contour ( 3 ) is more a function of ergonomics , but the invention &# 39 ; s contour can range from curvilinear to linear . the curvilinear contour ( 3 ) is more practicably applied to forming expanded resin cups , whereas the linear contour ( 3 ) as shown in fig6 and 7 , is more practicably applied to forming rolled and pressed flat material such as paper . fig6 is a frontal perspective view of the alternative embodiment of the invention , formed from a common type of flat material such as coated and or infused paper that is typically rolled and pressed to form the cup . the lid ( 7 ) is not a part of this invention but is included in the figures to demonstrate the functional aspects of the invention elements relative to common lids . the lid &# 39 ; s skirt ( 8 ) mates with cup &# 39 ; s rim ( 5 ), which is rolled . the ledge ( 13 ) stops or curbs contact between elements of the human hand and the lid skirt ( 8 ) in the same manner described in fig3 and 4 . the cross - sectional contour ( 3 ) is simply a linear continuation of the contour of the primary shape of the cup ( 6 ). in alternative embodiments , the linear contour ( 3 ) can be at any logical angle from the primary shape of the cup . the ledge ( 13 ) comprises a curb ( 1 ) and a horizontal plane ( 2 ). a rolled and pressed or otherwise formed depression ( 12 ) is formed on the inside surface ( 9 ) of the cup , corresponding to the ledge ( 13 ) on the outside surface ( 10 ) of the cup . the indentation ( 4 ) and the depression ( 12 ) demonstrate the different characteristics of a cup manufactured from a rolled flat material versus an expanded resin material . fig . ( 7 ) shows , in a larger scale , a detail of the alternative embodiment of the invention manufactured from rolled flat materials .
the invention comprises a disposable beverage cup that comprises a ledge between the cup &# 39 ; s rim and the grasping portion of the cup that is commonly held in the user &# 39 ; s hand . the ledge , which comprises a curb , a horizontal plane , and one or more indentations , acts as a barrier between the user &# 39 ; s hand and other objects , preventing a lid that has been press fit onto the cup &# 39 ; s rim from being dislodged . in order to remove the lid , the user must insert a finger and / or thumb into the indentation and press upward on the lid . the cup has a contour between the ledge and the grasping portion with ergonomic features to increase the user &# 39 ; s comfort in handling the cup .