Riding vehicle with safety apron

• US 3,992,042 A
• Filed: 06/30/1975
• Issued: 11/16/1976
• Est. Priority Date: 06/30/1975
• Status: Expired due to Term

• Current Assignee: DANA Corporation 4500 DORR St
• Original Assignee: J B Foote Foundry Company
• Inventors: Hauser, Hans, Helmick, Michael H.
• Primary Examiner(s): Song, Robert R.
• Application Number:
  US05/591,754
• Time in Patent Office: 505 Days
• Field of Search: 280/150 R, 280/154.5 R, 280/762, 188/4 R
• US Class Current: 280/762
• CPC Class Codes: B60R 19/56 Fittings damping bouncing force in truck collisions, e.g. bumpers; Arrangements on high-riding vehicles, e.g. lorries, for preventing vehicles or objects from running thereunder

Abstract

A riding vehicle, such as a lawn mower, has a flexible apron positioned behind the rear wheels with a lower edge of the apron above the ground. The mower can back up without impediment from the apron, unless an object is encountered. In that case, the object contacting the apron pushes it against the rear wheels and the apron is pulled under the tires where it abruptly snubs the tires and prevents further backing motion. To achieve this, the apron is supported by the mower through yieldable means which holds the apron above the ground until it contacts the wheels. The apron is also anchored to the mower to limit the extent of downward movement of the apron. In a preferred form, the yieldable supporting means for the apron also is resilient so that the apron can be returned to the original position after it is released from the rear wheels, as by driving the mower forwardly again. The apron is capable of stopping the mower securely and abruptly and reliably does so in a fixed, relatively short distance. The apron also has a lower edge which is sufficiently stiff to cause an object encountered to move the apron against the rear wheels but is sufficiently yieldable so that the object, in the case of an animate object, will not be injured if partly caught under the apron when snubbed under the tires.

Claims

1. In combination, a vehicle having a frame and a rear wheel rotatably carried under said frame, a flexible apron extending at least a substantial portion of the width of the vehicle, means carried by said vehicle for supporting said apron behind the vehicle and behind said rear wheel, with the lower edge of said apron located above the ground, the heighth of said apron being sufficient to enable said apron to be movable under the rear wheel upon encountering an obstacle, and means for limiting the extent that said apron can move downwardly relative to said vehicle, the downward movement being sufficient to enable said apron to be movable under the rear wheel upon encountering an obstacle.

2. The combination according to claim 1 characterized by yieldable means carried by said vehicle for yieldably maintaining said apron spaced behind said rear wheel.

3. The combination according to claim 1 characterized by said apron supporting means engaging said apron at an intermediate portion between upper and lower edges thereof.

4. The combination according to claim 1 characterized by said apron supporting means engaging the upper edge of said apron.

5. The combination according to claim 1 characterized by said apron supporting means comprising at least two elongate coil springs.

6. The combination according to claim 1 characterized by said apron supporting means comprising at least one torsion spring.

7. The combination according to claim 1 characterized by said movement limiting means comprising a bumper on said vehicle having means for anchoring an upper edge of said apron.

8. The combination according to claim 1 characterized by said movement limiting means comprising an enlargement at an upper portion of said apron, and means forming a narrow aperture carried by said vehicle through which said apron extends, said aperture being smaller than said enlargement to limit the movement of said apron.

9. The combination according to claim 1 characterized by said movement limiting means comprising a roller, an upper edge portion of said apron being affixed to said roller.

10. The combination according to claim 1 characterized by said movement limiting means comprising a chain having one end connected to said apron and the other end connected to said vehicle.

11. A vehicle having a body and two spaced rear wheels to aid in supporting said body above the ground, flexible apron means having a width greater than the lateral spacing of the rear wheels to be movable under the rear wheels upon encountering an obstacle, yieldable means for supporting said apron means behind said body at the rear thereof and with a lower edge portion of said apron means above the ground, and means for limiting the extent to which said apron means can move downwardly.

12. A vehicle according to claim 11 wherein said yieldable supporting means is also resilient and capable of returning said apron to the position with the lower edge above the ground after said apron has been moved to a lower position and then released.

13. A vehicle according to claim 11 wherein said yieldable supporting means can support the apron with the lower edge portion at any of a plurality of distances above the ground.

14. A vehicle according to claim 11 characterized by said apron having a plurality of ridges formed on the side facing the vehicle, with the ridges extending transversely to the plane of rotation of said wheel means.

15. A vehicle according to claim 11 characterized by said vehicle having a rotatable blade and drive means for rotating said blade, and means connected to said apron for disengaging said blade from the drive means when said apron is moved downwardly.