Chairs and seats – With table – desk – or easel – Table supported on both arms
Reexamination Certificate
2000-12-21
2002-11-19
Barfield, Anthony D. (Department: 3636)
Chairs and seats
With table, desk, or easel
Table supported on both arms
C297S463100, C297S463200, C024S599100, C024S647000, C403S322400
Reexamination Certificate
active
06481790
ABSTRACT:
BACKGROUND OF THE APPLICATION
A tray lock device is used for a baby car or a baby seat. In the conventional tray lock device it can be generally classified as two types. The first type referring to FIG.
1
. is a simple connecting device, comprising connecting means A extending in the end of the tray lock device, provided with a semi-circular concave shape portion B for connecting it with a tubular support C of the baby car or the baby seat in such a manner to achieve the purpose of the fixation. The second type, referring to
FIG. 2
, is a tray lock device comprising pulling means
22
provided on the middle bottom section of the tray
21
for pulling a fastening means
23
provided in the front end of the extended tubular support
24
, such that the front end of the tubular support
24
goes into a fastening hole
25
of a base portion
26
by pulling the pulling means
22
, and while being in the fastening position of the fastening hole
25
, the fastening means
23
connects with a fastening slot
27
of the fastening hole
25
for achieving the goal of the connection. For the disconnecting operation for the second type tray lock device, it requires pulling the pulling means
22
for enabling the fastening means
23
to depart from the fastening slot
27
. These two tray lock devices both have their disadvantages. For the first type of the tray lock device, except for its convenience, it tends to have a bad connection effect for its simple connecting structure. As to the second type tray lock device, although it performs a better effect for the connection, since it is not easy to make sure whether or not the fastening means
23
with the fastening slot
27
, the tray will have a risk of falling down as well as the complicated operation. Therefore, there is a requirement for the tray lock device to being setup easily and to connecting tightly without any risk.
SUMMARY OF THE APPLICATION
The present application is for overcoming the disadvantages of the prior two conventional tray lock devices, such that the tray lock device of the present application can be setup easily and connects tightly without any risk. In addition the merit of the present application also includes a capability of easily rotating, assembling disassembling. Further, the present application will prevent the tray from falling down from the fastening support during the rotation of the locking means. Also, the structure of the present application has an excellent capability for a static large weight.
REFERENCES:
patent: 3328078 (1967-06-01), Whitley
patent: 3649074 (1972-03-01), McDonald et al.
patent: 5037154 (1991-08-01), Senba et al.
patent: 5971103 (1999-10-01), Mulvaney
patent: 6301757 (2001-10-01), Kunii et al.
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