1216.2—Requirements for infant walkers.
(a)
Except as provided in paragraph (b) of this section, each infant walker shall comply with all applicable provisions of ASTM F 977-07, Standard Consumer Safety Specification for Infant Walkers, approved April 1, 2007. The Director of the Federal Register approves this incorporation by reference in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. You may obtain a copy from ASTM International, 100 Bar Harbor Drive, P.O. Box 0700, West Conshohocken, PA 19428; telephone 610-832-9585; http://www.astm.org. You may inspect a copy at the Office of the Secretary, U.S. Consumer Product Safety Commission, Room 820, 4330 East West Highway, Bethesda, MD 20814, telephone 301-504-7923, or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
Code of Federal Regulations
Code of Federal Regulations
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(2)
Instead of complying with section 4.6 through 4.6.8 of ASTM F 977-07, comply with the following:
(ii)
4.6.1Equipment —Force gauge with a range of 0 to 25 lbf (110 N), tolerance of ± 0.25 lbf (1.1 N). A calibration interval shall be maintained for the force guage which will ensure that the accuracy does not drift beyond the stated tolerance.
(iii)
4.6.2Equipment —Force gauge with a range 0 to 100 lbf (500 N) tolerance of ± 1 lbf (4.44 N). A calibration shall be maintained for the force gauge which will ensure that the accuracy does not drift beyond the stated tolerance.
(i)
6.4Parking Device (applicable to walkers equipped with parking brakes) —The walker shall have a maximum displacement of 1.97 inches (50 mm) for each test in each direction (forward, rearward, and sideward) when tested in accordance with 7.7.
(5)
Following section 7.6.2 of ASTM F 977-07, use the following table instead of Table 1 Summary of Step(s) Tests:
| Section No. | Facing direction of walker | Weight of CAMI dummy, lb. | Simulated speed, ft/s | Apply tipover test |
|---|---|---|---|---|
| 7.6.3 | Forward | 17 | 4 | Yes. |
| 7.6.3.6 | Forward | 28 (vest) | 4 | Yes. |
| 7.6.4 | Sideward | 17 | 2 | Yes. |
| 7.6.4.6 | Sideward | 28 (vest) | 2 | Yes. |
| 7.6.5 | Rearward | 17 | 4 | No. |
| 7.6.5.5 | Rearward | 28 (vest) | 4 | No. |
(i)
7.6.3.1Center the walker on the test platform facing forward so that Plane A is perpendicular to the front edge of the platform and the walker is distance d from the center of the most forward wheel(s) to the edge of the test platform,
Where
Vf = Maximum velocity of walker at edge of platform = 4 ft/sec
Vo = Initial velocity = 0
WCAMI = Measured weight of CAMI dummy
Wwalker = Weight of the walker
Wdrop weight = Drop weight = 8 lb
μk = Dynamic coefficient of friction = 0.05
NCAMI = Normal force (for CAMI dummy scenario) = weight of CAMI dummy and walker
g = acceleration of gravity = 32.2 ft/sec2
Position the swivel wheels in such a way that the walker moves forward in a straight line parallel to Plane A.
(ii) [Reserved]
(7) Instead of complying with section 7.6.3.2 of ASTM F 977-07, comply with the following:
(i) 7.6.3.2Place a CAMI infant dummy Mark II in the walker and position it as shown in Fig. 11 with the torso contacting the front of the occupant seating area and arms placed on the walker tray.
(ii) [Reserved]
(8) Instead of complying with section 7.6.3.3 of ASTM F 977-07, comply with the following:
(i) 7.6.3.3While holding the walker stationary, attach an 8 lb (3.6 kg) weight to the front of the walker base at Plane A by means of a 7-strand military rope with 550 lb tensile strength (e.g., paracord 550) and a stainless steel ball bearing pulley with an outside diameter of 1.25 in (32mm) and adjust the pulley so that the force is applied horizontally (0 ± 0.5° with respect to the table surface).
(ii) [Reserved]
(9) Instead of complying with section 7.6.3.6 of ASTM F 977-07, comply with the following:
(i) 7.6.3.6Repeat 7.6.3.1-7.6.3.5 using the CAMI dummy with the weighted vest and with distance d, computed using the following equation:
Where
Vf = Maximum velocity of walker at edge of platform = 4 ft/sec
Vo = Initial velocity = 0
WCAMI w/vest = Measured weight of CAMI dummy and weighted vest
Wwalker = Weight of the walker
Wdrop weight = Drop weight = 8 lb
μk = Dynamic coefficient of friction = 0.05
NCAMI w/vest = Normal force (for CAMI dummy fitted with 11 lb vest scenario) = weight of CAMI dummy vest weight walker weight
g = acceleration of gravity = 32.2 ft/sec2
(i)
7.6.3.7Repeat tests in the following sequence: Section 7.6.3.4, section 7.6.3.5, and section 7.6.3.6 two additional times.
(i)
7.6.4.1Center the walker on the test platform facing sideways so that Plane B is perpendicular to the front edge of the platform and the walker is distance d from the center of the most sideward wheel(s) to the edge of the test platform,
Where
Vf = Maximum velocity of walker at edge of platform = 2 ft/sec
Vo = Initial velocity = 0
WCAMI = Measured weight of CAMI dummy
Wwalker = Weight of the walker
Wdrop weight = Drop weight = 8 lb
µk = Dynamic coefficient of friction = 0.05
NCAMI = Normal force (for CAMI dummy scenario) = weight of CAMI dummy and walker
g = acceleration of gravity = 32.2 ft/sec2
Position the swivel wheels in such a way that the walker moves sideward in a straight line parallel to Plane B.
(i)
7.6.4.3While holding the walker stationary, attach an 8 lb (3.6 kg) weight to the side of the walker base at Plane B by means of a rope (as specified in 7.6.3.3) and a pulley (as specified in 7.6.3.3) and adjust the pulley so that the force is applied horizontally (0 ± 0.5º with respect to the table surface).
(i)
7.6.4.6Repeat 7.6.4.1 through 7.6.4.5 using the CAMI dummy with the weighted vest (see Fig. 12) and with distance d, computed using the following equation:
Where
Vf = Maximum velocity of walker at edge of platform = 2 ft/sec
Vo = Initial velocity = 0
WCAMI w/vest = Measured weight of CAMI dummy and weighted vest
Wwalker = Weight of the walker
Wdrop weight = Drop weight = 8 lb
µk = Dynamic coefficient of friction = 0.05
NCAMI w/vest = Normal force (for CAMI dummy fitted with 11 lb vest scenario) = weight of CAMI dummy vest weight walker weight
g = acceleration of gravity = 32.2 ft/sec2″
(i)
7.6.4.7Repeat tests in the following sequence: section 7.6.4.4, section 7.6.4.5, and section 7.6.4.6 two additional times.
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(i)
7.6.5.1Center the walker on the test platform facing rearward so that Plane A is perpendicular to the front edge of the platform and the walker is distance d from the center of the most rearward wheel(s) to the edge of the test platform,
Where
Vf = Maximum velocity of walker at edge of platform = 4 ft/sec
Vo = Initial velocity = 0
WCAMI = Measured weight of CAMI dummy
Wwalker = Weight of the walker
Wdrop weight = Drop weight = 8 lb
μk = Dynamic coefficient of friction = 0.05
NCAMI = Normal force (for CAMI dummy scenario) = weight of CAMI dummy and walker
g = acceleration of gravity = 32.2 ft/sec2
Position the swivel wheels in such a way that the walker moves rearward in a straight line parallel to Plane A. If the walker has an open back design, attach the 1 in aluminum angle used in 7.3.4 to span the back frame.
(i)
7.6.5.3While holding the walker stationary, attach an 8 lb (3.6 kg) weight to the rear of the walker base at Plane A by means of a rope (as specified in 7.6.3.3) and a pulley (as specified in 7.6.3.3) and adjust the pulley so that the force is applied horizontally (0 ± 0.5° with respect to the table surface).
(i)
7.6.5.5Repeat 7.6.5.1 through 7.6.5.4 using the CAMI dummy with the weighted vest (see Fig. 12) and with distance d, computed using the following equation:
Where
Vf = Maximum velocity of walker at edge of platform = 4 ft/sec
Vo = Initial velocity = 0
WCAMI w/vest = Measured weight of CAMI dummy and weighted vest
Wwalker = Weight of the walker
Wdrop weight = Drop weight = 8 lb
μk = Dynamic coefficient of friction = 0.05
NCAMI w/vest = Normal force (for CAMI dummy fitted with weighted vest scenario) = Measured weight of CAMI dummy measured weight of vest walker weight
g = acceleration of gravity = 32.2 ft/sec2″
(i)
7.6.5.6Repeat tests in the following sequence: section 7.6.5.3, and section 7.6.5.5 two additional times.
(A)
7.7.1Perform the parking device test using a Test Mass that is A rigid cylinder 6.30 in ± 0.04 in (160mm ± 1 mm) in diameter, 11.02 in ± 0.04 in (280 mm ± 1 mm) in height with a mass of 16.9 lb (7.65 kg), with its center of gravity in the center of the cylinder.
(B)
7.7.2Adjust the walker seat to the highest position (if applicable). Place the Test Mass vertically in the walker seat. Set any manual speed control to the fastest position (if applicable). Establish a vertical plane A that passes through the center of the seating area and is parallel to the direction the child faces. Establish a vertical plane B that is perpendicular to plane A and passes through the center of the seating area.
(E)
7.7.4.1Position the walker including the Test Mass facing forward so that plane A is perpendicular to the front edge of the platform (see fig. 10) and passes through the center of the pulley. Engage all parking devices in accordance with the manufacturer's instructions.
(F)
7.7.4.2Within one minute of placing the walker with the Test Mass on the platform, attach an 8 lb weight gradually within 5 seconds to the walker frame base at plane A by means of a rope and a pulley per the test apparatus specifications in the step test procedure, adjusted so that the force is applied horizontally (rope angle shall be 0 ± 0.5°). Remove the 8 lb weight after 1 minute. Measure the displacement.
(H)
7.7.5.1Position the walker including the Test Mass facing sideward so that plane B is perpendicular to the front edge of the platform and passes through the center of the pulley. Engage all parking devices in accordance with the manufacturer's instructions.
(I)
7.7.5.2Within one minute of placing the walker with the Test Mass on the platform, attach an 8 lb weight gradually within 5 seconds to the walker frame base at plane B by means of a rope and a pulley per the test apparatus specifications in the step test procedure, adjusted so that the force is applied horizontally (rope angle shall be 0 ± 0.5°). Remove the 8 lb weight after 1 minute. Measure the displacement.
(J)
7.7.5.3If the walker is equipped with fixed direction rear wheels and the walker is displaced in a curved path, establish the location of the rope attachment as the reference point and measure the linear displacement of that reference point after performing the procedure as described in 7.7.5.1 and 7.7.5.2.
(L)
7.7.6.1Position the walker including the Test Mass facing rearward so that plane A is perpendicular to the front edge of the platform and passes through the center of the pulley. Engage all parking devices in accordance with the manufacturers' instructions.
(M)
7.7.6.2Within one minute of placing the walker with the Test Mass on the platform, attach an 8 lb weight gradually within 5 seconds to the walker frame base at plane A by means of a rope and a pulley per the test apparatus specifications in the step test procedure, adjusted so that the force is applied horizontally (rope angle shall be 0 ± 0.5°). Remove the 8 lb weight after 1 minute. Measure the displacement.
(i)
8.2.3.3 If the walker is equipped with a parking brake, a warning statement shall address the following:
WARNING: Parking brake use does not totally prevent walker movement. Always keep child in view when in the walker, even when using the parking brakes.
Code of Federal Regulations
Code of Federal Regulations
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