IP Library Granted Patent US 12,122,648
Granted Patent B2
US 12,122,648 · App. 18/367,726 · Granted Oct 22, 2024

Mid-mount fire apparatus

Inventors: Eric D. Betz (Clintonville, WI); David W. Archer (Hortonville, WI)
Assignee: Oshkosh Corporation
B66F11/046A62C27/00A62C37/00B60R9/02E06C5/04
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Quick Facts
Patent No.
US 12,122,648
App. No.
18/367,726
Granted
Oct 22, 2024
Kind
B2
Abstract

A mid-mount fire apparatus includes a chassis, a body assembly coupled to the chassis, a front cabin coupled to the chassis forward of the body assembly, a front axle coupled to the chassis, a rear axle coupled to the chassis, and a ladder assembly having a proximal end that is coupled to the chassis rearward of the front cabin and between the front axle and the rear axle. The ladder assembly includes a plurality of ladder sections. The ladder assembly is extensible to a horizontal reach of at least 88 feet. A distal end of the ladder assembly does not extend beyond the rear end of the body assembly when fully retracted.

Claims (75)

1. A mid-mount fire apparatus comprising:

a chassis;

a body assembly coupled to the chassis;

a front cabin coupled to the chassis forward of the body assembly;

a front axle coupled to the chassis;

a tandem rear axle coupled to the chassis;

a ladder assembly having a proximal end that is coupled to the chassis rearward of the front cabin and between the front axle and the tandem rear axle, the ladder assembly including a plurality of ladder sections; and

a pump positioned rearward of the front cabin and forward of an axis about which the ladder assembly rotates;

wherein the mid-mount fire apparatus has an overall length with (i) a first portion extending from a rear end of the body assembly to a middle of the tandem rear axle and (ii) a second portion extending from the middle of the tandem rear axle to a front end of the front cabin; and

wherein the first portion is at most 160 inches, the second portion is at least 320 inches, and the overall length is at most 502 inches.

2. The mid-mount fire apparatus of claim 1 , wherein the ladder assembly includes a basket coupled to the plurality of ladder sections.

3. A mid-mount fire apparatus comprising:

a chassis;

a body assembly coupled to the chassis;

a front cabin coupled to the chassis forward of the body assembly;

a front axle coupled to the chassis;

a tandem rear axle coupled to the chassis; and

a ladder assembly having a proximal end that is coupled to the chassis rearward of the front cabin and between the front axle and the tandem rear axle, the ladder assembly including a plurality of ladder sections and a basket coupled to the plurality of ladder sections;

wherein the mid-mount fire apparatus has an overall length with (i) a first portion extending from a rear end of the body assembly to a middle of the tandem rear axle and (ii) a second portion extending from the middle of the tandem rear axle to a front end of the front cabin;

wherein the first portion is at most 160 inches, the second portion is at least 320 inches, and the overall length is at most 502 inches;

wherein the body assembly has first chamfered corners at the rear end thereof; and

wherein the basket has second chamfered corners to correspond with the first chamfered corners of the body assembly.

4. The mid-mount fire apparatus of claim 3 , wherein the body assembly includes a pair of ladders, each of the pair of ladders is coupled to a respective one of the first chamfered corners.

5. A mid-mount fire apparatus comprising:

a chassis;

a body assembly coupled to the chassis;

a front cabin coupled to the chassis forward of the body assembly;

a front axle coupled to the chassis;

a tandem rear axle coupled to the chassis; and

a ladder assembly having a proximal end that is coupled to the chassis rearward of the front cabin and between the front axle and the tandem rear axle, the ladder assembly including a plurality of ladder sections;

wherein the mid-mount fire apparatus has an overall length with (i) a first portion extending from a rear end of the body assembly to a middle of the tandem rear axle and (ii) a second portion extending from the middle of the tandem rear axle to a front end of the front cabin;

wherein the first portion is at most 160 inches, the second portion is at least 320 inches, and the overall length is at most 502 inches;

wherein the body assembly has a chamfered corner at the rear end thereof; and

wherein the body assembly includes a ladder coupled to the chamfered corner.

6. The mid-mount fire apparatus of claim 5 , wherein the ladder is selectively deployable from a stowed position and a deployed position.

7. The mid-mount fire apparatus of claim 6 , wherein the ladder is hingedly coupled to the chamfered corner.

8. The mid-mount fire apparatus of claim 1 , wherein the mid-mount fire apparatus has an overall height of at most 128 inches when the ladder assembly is in a stowed position.

9. The mid-mount fire apparatus of claim 1 , wherein the ladder assembly includes a work platform coupled to the proximal end, and wherein the work platform overhangs the pump when the ladder assembly is in a stowed position.

10. The mid-mount fire apparatus of claim 1 , wherein the ladder assembly has at least a 1,000 pound tip load rating when the ladder assembly is fully extended without a basket coupled to a distal end thereof.

11. The mid-mount fire apparatus of claim 1 , wherein the tandem rear axle has a gross axle weight rating of no more than 48,000 pounds.

12. The mid-mount fire apparatus of claim 1 , further comprising a water tank, wherein the water tank has up to a 300 gallon capacity.

13. The mid-mount fire apparatus of claim 1 , wherein the ladder assembly is extensible to a vertical reach of at least 95 feet.

14. The mid-mount fire apparatus of claim 1 , wherein the ladder assembly is extensible to a horizontal reach of at least 88 feet, and wherein a distal end of the ladder assembly does not extend beyond the rear end of the body assembly when fully retracted.

15. A mid-mount fire apparatus comprising:

a chassis;

a body assembly coupled to the chassis;

a front cabin coupled to the chassis forward of the body assembly;

a front axle coupled to the chassis;

a tandem rear axle coupled to the chassis; and

a ladder assembly having a proximal end that is coupled to the chassis rearward of the front cabin and between the front axle and the tandem rear axle, the ladder assembly including a plurality of ladder sections;

wherein the mid-mount fire apparatus has an overall length with (i) a first portion extending from a rear end of the body assembly to a middle of the tandem rear axle and (ii) a second portion extending from the middle of the tandem rear axle to a front end of the front cabin;

wherein the first portion is at most 160 inches, the second portion is at least 320 inches, and the overall length is at most 502 inches;

wherein the plurality of ladder sections include a base ladder section and a plurality of extensible ladder sections that extend relative to the base ladder section; and

wherein at least one of the plurality of extensible ladder sections is configured to over-retract past an end of the base ladder section when the ladder assembly is in a stowed position.

16. A mid-mount fire apparatus comprising:

a chassis;

a body assembly coupled to the chassis;

a front cabin coupled to the chassis forward of the body assembly;

a front axle coupled to the chassis;

a rear axle coupled to the chassis;

a ladder coupled to the body assembly proximate a rear end thereof;

a ladder assembly including a base ladder section and a plurality of extensible ladder sections, the base ladder section having a proximal end that is coupled to the chassis rearward of the front cabin and between the front axle and the rear axle; and

a basket coupled to a fly section of the plurality of extensible ladder sections;

wherein the ladder assembly is extensible to a horizontal reach of at least 88 feet; and

wherein a distal end of the ladder assembly is positioned forward of the ladder and at least a portion of the basket does not extend rearward of the ladder when the ladder assembly is in a stowed position.

17. A mid-mount fire apparatus comprising:

a chassis;

a body assembly coupled to the chassis;

a front cabin coupled to the chassis forward of the body assembly;

a front axle coupled to the chassis;

a rear axle coupled to the chassis; and

a ladder assembly including a base ladder section and a plurality of extensible ladder sections, the base ladder section having a proximal end that is coupled to the chassis rearward of the front cabin and between the front axle and the rear axle;

wherein the ladder assembly is extensible to a horizontal reach of at least 88 feet;

wherein a distal end of the ladder assembly does not extend beyond a rear end of the body assembly when the ladder assembly is in a stowed position; and

wherein at least one of the plurality of extensible ladder sections is configured to over-retract past the proximal end of the base ladder section when the ladder assembly is in the stowed position.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 13, 2023
From: BETZ, ERIC D.; ARCHER, DAVID W.
To: OSHKOSH CORPORATION
Reel/Frame 064891/0330 →
Continuity (5)
Continuation 17721002 · Apr 14, 2022
Continuation 16599672 · Oct 11, 2019
Continuation 16389072 · Apr 19, 2019
Provisional Application 62661330 · Apr 23, 2018
Related Publication 20230416065A1 · Dec 28, 2023