Hello all,
I am going to go over patents on hot beverage container sleeves. I will be summarizing these patents in terms of their background, priority date, ideas, diagrams, specifications, and the claims.
- US 6343735 B1 Insulating sleeve
Priority date: May 4th, 2000
Insulating sleeve has to ensure that the gripping surface of the coffee cup remains at a most comfortable temperature, not too cold or hot, while the liquid inside the container is hot or cold. In terms of technology, an insulating cup sleeve has to be folded in certain way that ridges are formed for gripping. The insulating cup sleeve has to be made from a thin paperboard material while it is folded in such way that there is one section that has gap apart from the wall of the cup to make an insulation air gap.
2. US 2661889 A Thermal coffee cup
Priority date: July 20th, 1948
It has been designed to insulate the user's hand by the heat of the hot beverage contained inside the cup. In terms of technology, the thermal coffee cup is a conical shaped insulator jacket that has inner layer, a corrugated middle for allowing a gap for air, and an outer layer. The air cannot escape in the middle layer because it is sealed at the top and bottom. For specification, the insulator jacket has outer sleeve where cap of the coffee cup can sit. In the claim, the insulated jacket should have an inner layer that allows an air insulator, which specifically has sealed bottom.
3. US 8,251,277 B1 Thermal sleeve, method for manufacturing a thermal sleeve, and combination cup and thermal sleeve
Priority date: April 15th, 2005
It is considered inefficient for having multiple cups layered on the hot beverage when holding the cup. It is causing a negative impact on environment, thus more efficient and practical method is needed when holding a cup with hot beverage inside. In terms of technology, the cup has to have smooth paper inside, but creped paper outside. Specifically, the creped paper should be 8 to 100 crepe lines per linear inch, while inner layer should be smooth paper of 16 lbs/3000 sq ft to 80 lbs/3000 sq ft. Claim 1 talks about how cup sleeve should be made out of inner creped paper and outer smooth paper. Claim 2-9 describes the exact specifications of the cup sleeve paper.
4. US 7,922,031 B1 Insulator sleeve for a beverage container
Priority date: March 1, 2006
The insulator sleeves may disrupt the barista when they write the orders or names on the cup because the opaque sleeve may not show the order details. Therefore, this invention is made to be transparent but also heat insulating. In terms of technology and specifications, the inner portion can be eraseable when written by pen, while the outer portion is a heat insulating layer made out of silicon rubber material.
5. US 8118189 B1 Temperature-indicating sleeve and related container
Priority date: Dec 15, 2006
It is difficult for the suers to know how hot the liquid inside the cup is and whether is it cooled down enough for consumption. This invention is a temperature-indicating sleeve that is placed on the outer surface of a container. In terms of technology, the temperature-indicator should display the temperature or the temperature range of the beverage inside the cup. The insulating layer has a thermal conductivity of 0.1 W/m*K at 298K and is 50% cellulose based and non-absorbing in specifications.
6. US 6152363 Sleeve construction for improved paperboard cup insulation
Priority date: May 3, 1999
This provides sleeve cut from a single blank that adds an air gap for insulation, while maintaining smooth surface for printing patterns of designing on the sleeve. In terms of technology, the insulating sleeve has smooth surface and an air-gap between the cup sidewall and the sleeve. The gap can be created by using hot-glue dots or syntactic foam. In specifications, the sleeve is made out of paperboard and has specific length and height. Claim 1 talks about the texture of the sleeve; one side should be smooth while the other should be in plurality due to creating air gaps. Claim 2 specifies the weight of the paper.
7. US 20080078824 A1 Beverage cup sleeving system and method
Priority date: August 23, 2006
Usually, the thermally insulating sleeve becomes useless when it gets wet. This invention is to make insulating sleeve reusable and washable. In terms of technology, the layer of elastomer is made out of homogenous seamless conical sleeve. The sleeve can be made out of metals, elastomers, elastomeric composites, or liquid crystal pouches in specifications.
8. US 20100019023 A1 Protective sleeve
Priority date: 2008
When hot and cold beverages are transferred to other containers, the heat can be changed. This invention has a sleeve with a unique arch shape that allows users to hold the cup in comfortable way. In terms of technology, the sleeve should have an arch in its geometry. In terms of specification, sleeve has to reduce sheet material when it is manufactured.
9. US 20140151385 A1 Hot and Cold Cup Sleeve
Priority date: February 6, 2014
Coffee shops need inexpensive sleeves for the coffee cup so that users could insulate the beverage. However, current methods are too expensive to be considered appropriate and practical. In terms of specifications and technology, inner layer should be any material that can absorb water, whereas, outer layer should be a texture that is easily gripped and water repellent. Claim 1 talks about the characteristics of the inventions and Claim 2 details the composition of each layer.