Sheet feeding or delivering – Feeding – Separator and conveyor
Reexamination Certificate
1998-11-23
2001-01-09
Skaggs, H. Grant (Department: 3651)
Sheet feeding or delivering
Feeding
Separator and conveyor
C271S111000, C271S265020, C271S270000
Reexamination Certificate
active
06170816
ABSTRACT:
The invention relates to a method and a device for controlling the removal in accordance with the preamble of the independent claims.
EP 0 167 091 A1 discloses a device for removing flat items of mail from a stack. This device has a controlled removal element which draws off the respective frontmost item of mail from a stack and pushes it into the capture area of a pair of driven feed rollers, a measured section being arranged between the stack output and the feed rollers, the output signals of which section are fed to a control circuit. Here, the removal element is driven to remove an item of mail in such a way that the distance between the item of mail to be removed and an item which has already been removed is determined and the respective distance-measuring result is corrected by a prescribed value which is dependent on the acceleration travel of the object to be removed, the removal being initiated if the magnitude of the distance-measuring result corrected in this way corresponds to a set point distance value. Here, the use of the prescribed value makes it possible to take into account different mechanical properties of the different items of mail and their effect during the acceleration process.
A different behavior of the items of mail during the removal process also results from the different position of the items of mail in the stack from which the items of mail are being removed. The consequence of this is likewise that the central gaps between the items of mail and the minimum gap which must be maintained in order to supply downstream equipment, such as letter sorting devices, for example, with items of mail in an optimum way, are different from one another to an undesired higher degree. This difference has adverse effects on the throughput rate.
The object of the present invention is to specify a method and a device for removing flat items of mail from a stack, with which the difference between the central gap between the items of mail and the minimum gap can be reduced. This object is achieved according to the invention by means of the features of the independent patent claims.
The invention is based on the idea that the item of mail to be removed is initially accelerated to an intermediate speed value which is lower than a prescribed final speed, and that as soon as the actual distance is equal to the set point distance, the item of mail is accelerated to the final speed. The removal of an item of mail to be removed is carried out as a function of the position of the item of mail with respect to the removal element.
Advantageous embodiments of the invention can be found in the dependent claims and the description.
REFERENCES:
patent: 4077620 (1978-03-01), Frank et al.
patent: 4171130 (1979-10-01), Jeschke
patent: 4451027 (1984-05-01), Alper
patent: 4541624 (1985-09-01), Sasage et al.
patent: 4691912 (1987-09-01), Gillmann
patent: 4893804 (1990-01-01), Sasage et al.
patent: 5664771 (1997-09-01), Nagatani et al.
patent: 3319220A1 (1983-12-01), None
patent: 3424397A1 (1986-01-01), None
patent: 0057810A1 (1982-08-01), None
patent: 0167091A1 (1986-01-01), None
Gillmann Hanno
L{umlaut over (u)}bben Hauke
Kinberg Robert
Siemens Aktiengesellschaft
Skaggs H. Grant
Spencer George H.
Venable
LandOfFree
Method of controlling a device for removing flat items of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of controlling a device for removing flat items of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of controlling a device for removing flat items of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2470768