Fire escape – ladder – or scaffold – Horizontal traversing - actuation – control – or response – Occupant actuation or control
Patent
1978-01-10
1979-09-04
Husar, C. J.
Fire escape, ladder, or scaffold
Horizontal traversing - actuation, control, or response
Occupant actuation or control
16 19, 16 44, E04G 316, B60B 3304
Patent
active
041665163
ABSTRACT:
A spring loaded, adjustable caster is disclosed which is used in combination with a rolling ladder. The adjustable caster comprises a wheel, a wheel mount for mounting the wheel, a longitudinal adjustable shank including a connecting rod having a threaded bore and a threaded shaft disposed in screwthreaded engagement with each other, whereby the length of the longitudinal adjustable shank may be varied. A jam nut is disposed in threadingly fitted engagement on the threaded shaft intermediate to the connecting rod and the wheel mount, whereby the jam nut may be rotated into a biasing relationship to the connecting rod. The caster further includes a sleeve adapted for sliding support of the connecting rod and with a spring disposed within the sleeve to provide a compressed relationship between the sleeve and the connecting rod. The sleeve is then mounted on a rolling ladder. Also, disclosed is a rolling ladder including a rectangular base with an adjustable caster disposed in each of the corners thereof, and a ladder leg disposed adjacent to each of the adjustable casters. Each of the ladder legs are in pre-determined spaced-apart relationship. When the ladder is empty, the casters engage the floor. When the ladder is loaded, the weight of the load compresses the caster and the legs then engage the floor. Each individual caster can be adjusted to provide for uniform engagement of the floor when the ladder is loaded and uniform clearance from the floor when not stood upon.
REFERENCES:
patent: 1271559 (1918-07-01), Feebusch et al.
patent: 1944185 (1934-01-01), Langer
patent: 2176551 (1939-10-01), Solem
patent: 2425675 (1947-08-01), Graft
patent: 3112010 (1963-11-01), Mihalik
patent: 3245363 (1966-04-01), Amthor, Jr. et al.
Berman Conrad
Dominik Jack E.
Equipment Company of America
Husar C. J.
LandOfFree
Adjustable caster does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjustable caster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable caster will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2125559