U.S. patent number 3,851,343 [Application Number 05/387,080] was granted by the patent office on 1974-12-03 for infant seat rocker.
Invention is credited to William G. Kinslow, Jr..
United States Patent |
3,851,343 |
Kinslow, Jr. |
December 3, 1974 |
INFANT SEAT ROCKER
Abstract
For an infant seat of the type embodying an elongated inclined
floor on which the infant is reclined, and embodying side walls and
an end wall at the lower end of the floor with a framework beneath
the floor holding the floor inclined upwardly away from the end
wall, a rocker is provided. The rocker has an elongated main
platform. A motor is mounted on the platform and has a shaft
extending transversely over the platform. A hollow cover having
side walls and end walls and a top encloses the motor and overlies
the platform. Pivot means on the platform within the cover mounts
the cover for rocking movement over the platform. Lifting arm means
beneath the cover near the other end thereof is carried by bell
crank means fixed on the shaft. The cover has an exterior seat
support on its end most remote from the cover pivot means which
support is operable to engage and lift the framework and thereby
rock the seat upward as the cover is raised by the lifting arm
means.
Inventors: |
Kinslow, Jr.; William G.
(Kansas City, MO) |
Family
ID: |
23528372 |
Appl.
No.: |
05/387,080 |
Filed: |
August 9, 1973 |
Current U.S.
Class: |
5/109;
297/260.2 |
Current CPC
Class: |
A47D
13/10 (20130101); B60N 2/2854 (20130101); A47D
9/04 (20130101) |
Current International
Class: |
A47D
13/10 (20060101); A47D 13/00 (20060101); B60N
2/28 (20060101); B60N 2/26 (20060101); A47d
009/04 () |
Field of
Search: |
;5/108,109,101,105,107
;297/260 ;128/33 ;272/53.1,58 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Gilliam; Paul R.
Assistant Examiner: Dorner; Kenneth J.
Attorney, Agent or Firm: Wells, St. John & Roberts
Claims
Having described a preferred embodiment of my invention, I
claim:
1. A rocker for a separate conventional infant seat, said infant
seat having an elongated floor with side walls and an end wall
upstanding from the floor to support the infant and having a
framework beneath the floor operable to support the infant seat
with the seat floor inclined upwardly away from a horizontal
plane;
said rocker comprising an elongated main platform;
a motor mounted on the main platform having a shaft extending
transversely of and above the platform;
a hollow cover over the motor having a top wall, side walls and end
walls forming together an enclosure over the platform and
surrounding the motor;
pivot means within the enclosure adjacent to one end wall pivotally
mounting the cover on the platform;
lifting means beneath the cover operable to lift the cover up and
down about said pivot means; and
means operably connecting the lifting means to the motor shaft;
and an infant seat supported on the end of the cover most remote
from the pivot means operable to receive and support the framework
to transmit the pivotal up and down movement of the cover to the
infant seat to rock an infant residing in the infant seat, said
infant seat support comprises an upwardly opening transverse hook
for openly receiving and supporting the infant seat framework
therein.
2. The device defined in claim 1 wherein the last named means
comprises a bell crank on the motor shaft;
a link extending upwardly from the bell crank and means connecting
the link to the cover.
Description
BACKGROUND OF THE INVENTION
Infant seats of the type shown herein are found in such prior
patents as U.S. Pat. No. 3,272,556 to Rocker and U.S. Pat. No.
3,653,080 to Hafele. To rock such an infant seat Hafele modified
the framework that holds the seat inclined to provide a rocking
mechanism as a part of this framework which mechanism includes a
lift arm and a bell crank forming part of the framework. He
provided a motor carried by the framework to operate the bell
crank.
A crib rocking device was already known in the U.S. Pat. to Pinto
No. 2,765,478 in which a spring mounted crib was caused to rock by
means of a motor driven bell crank and a strand 14 that pulled down
on the crib to compress the springs mounting the crib and then
allow the springs to raise the crib. The bell crank and its motor
were mounted on a base 12 and enclosed in a housing 7 affixed to
the base 12.
PURPOSE OF THE INVENTION
It is the purpose of this invention to provide a novel device by
which an infant seat, having a framework secured to it beneath the
seat to hold the seat inclined, can be rocked about its lower
corner. The device embodies a main platform which can rest on the
surface which supports the seat. A cover is mounted on the platform
and is pivotally supported thereon so as to rock up and down. The
cover has a hook for carrying the framework, and the platform
carries a motor and bell crank mechanism operably connected to the
cover for rocking it.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side view of the infant seat and the mechanism for
rocking the seat.
FIG. 2 is a plan view of the rocking device which shows how it
hooks to the framework of the seat.
FIG. 3 is a longitudinal sectional view taken substantially on the
line 3--3 of FIG. 2.
FIG. 4 is a sectional view on the line 4--4 of FIG. 3.
FIG. 5 is a sectional view on the line 5--5 of FIG. 3.
GENERAL DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE
INVENTION
The invention is shown in connection with an infant's seat 1 having
a bottom wall 2, side walls 3 and 4, and and an end wall 5. A
framework comprising side jointed rods 6 and 7 at each side of the
seat is connected to the seat 1 by ears 8 through which the ends of
the rods are secured. The rods 6 and 7 form parallel triangles with
one leg of each triangle being the seat bottom wall 2. The two
triangles thus formed are joined by a crossbar 9. The function of
the present invention is to move the crossbar up and allow it to
come back down thus to rock the infant seat 1 about its lowermost
corner where the bottom wall 2 and the end wall 5 meet. This corner
may be shaped to avoid wear on the floor.
The device 10 shown embodies a main platform 11 of generally
rectangular configuration and having pads 12 at its two ends to
support it on a floor. The platform 11 is elongated enough to
extend under the crossbar 9 and carries a power unit 13 near one
end which unit comprises a commercially available electrical or
spring motor geared to operate its drive shaft 14 at a suitable
speed to rock the infant seat at a comfortable rate for the infant.
The drive shaft 14 has a bell crank 15 that raises and lowers a
link 16. The platform 11 has upstanding flanges 17, 18 and 19 along
its edges with the side edge flanges 17 and 19 terminating before
they reach the end of the platform that is most remote from the
power unit 13. The flange 18 has a hinge 20 at its top. A wide
metal frame 21 is carried by the hinge. This frame extends upward
and over the power unit 13 then forwardly and down toward the
platform, between the ends of the flanges 17 and 19 and the front
pad 12 of the platform. The frame 21 has an upturned end 22 so that
a wide seat 24 is provided to receive the crossbar 9. The bell
crank 15 raises the link 16 which is connected to the frame 21 to
swing it up and cause the seat 24 to lift the crossbar 9.
A cover 25 is secured on the frame 21 and covers it as well as the
power unit 13. This cover 25 is a decorative cover and preferably
is molded of a synthetic resin or plastic. The cover 25 fits snugly
alongside the flanges 17 and 19, but, because of the movement up
and down of the frame 21 and the cover 25, there is a pinch space
26 at the end of the device between the end flange 18 and the cover
end 25a. The space 26 is a wide clearance and the cover 25 is
somewhat flexible so there is really no chance for damage at 26.
The space 26 closes on the up movement of the seat 24. There is a
pinch space 27 between the seat 24 and the platform 11. This space
27 closes on the down movement of the seat 24.
The connection of the frame 21 to the upstanding link 16 provides
safety means to prevent the down pull of the link 16 from exerting
a pinching pull downward upon the frame 21 in the event that
something is caught in the pinching space 27. This safety means
comprises a link 28 pivoted to the top of the link 16 and normally
extending over the unit 13 to a pair of ears 29 turned down on the
frame 21. The link 28 is secured by a pivot pin 30 to the ears 29.
The link 28 extends beyond the pivot pin 30 about one third of the
distance between the link 16 and the pivot pin 30. The operation of
this safety mechanism is such that in the normal lift movement of
the bell crank 15 and the link 16, the link 16 presses the link 28
up against the frame 21 where it is shown in FIG. 3. Now, on the
downward movement of the link 16, the frame 21 will normally keep
the link 28 in this position. However if something foreign gets in
the pinch point 27 that will stop the frame 21 from going down far
enough to allow the bell crank 15 to complete its low point of
travel, the link 16 will pull the link 28 down away from the frame
21, turning the link 28 on the pivot pin 30 and moving the free end
28a of the link 28 up toward the frame 21. Whatever force downward
on the seat 24 by the crossbar 9 that is due to the load in the
infant seat will pinch the foreign object in the pinch space 27 but
this load can be tolerated and is always present.
The hinge 20 is placed near the top of the total movement of the
seat 24 so that the up and down movement of the crossbar 9 seated
in seat 24 will follow the same path and not create horizontal pull
on the crossbar 9 and thus not cause the corner of the infant seat
1 to rub on the floor.
The deivce may also include means for providing music when the seat
is being rocked. A music drum 32 is rotated by a pulley 33 which is
driven by a belt 34 that in turn is driven by a pulley 35. A stylus
36 of a sound producer 37 rides on the drum and supplies the
vibrations to the sound producer.
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