US3874534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fail-safe locking arrangement for refuse collection vehicle
Assignee: LODAL Inc
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Filing: 1973-09-13
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Granted: 1975-04-01
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Expires: 1993-09-13
Abstract
Abstract A refuse collection vehicle includes a body with a top opening through which refuse and the like is dumped by means of a pivoting boom having a refuse container thereon. The container is removably attached to the boom assembly by interengaging male and female members which are lockable together. A pair of opposed locking pins are associated with the male member on the boom assembly and are adapted to enter pinreceiving openings associated with the female member on the refuse container. The locking pins are continuously biased outwardly as by springs to secure the boom assembly and container together. When the boom is in or adjacent its lowered position, as when interengaging the male and female locking members, a compressed air system overcomes the spring biasing force to keep the locking pins retracted. A compressed air exhaust valve is responsive to upward boom movement to once again bring the biasing force into play to provide locking. The refuse container cannot become unlocked and fall at any position of the boom, even if the compressed air control system should fail.
Inventors
- 👤 John R Brisson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:59
CPC Classifications
B; B65; B65F; B65F3/00; B65F3/02; B65F3/04; B65F2003/0223; B65F2003/0246; B65F2003/0263; B65F2003/0279
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
127 words
In a refuse collection vehicle for use with a refuse container having a female interengaging member, the combination comprising: a. a body on said vehicle and having an opening for receiving refuse, b. a boom assembly pivotally mounted on said vehicle for carrying a said refuse container between a lowered position and a raised dumping position, c. a male interengaging member mounted on said boom assembly and adapted to supportingly engage the said female member, d. locking means associated with said male member for selective locking engagement with said female member, e. means normally biasing said locking means toward locking position, f. and means responsive to the angular position of said boom assembly for overcoming said biasing means for disengaging said locking means from said female member.
Claim 2
Dependent Claim
127 words
In a refuse collection vehicle for use with a refuse container having a female interengaging member, the combination comprising: a. a body on said vehicle and having an opening for receiving refuse, b. a boom assembly pivotally mounted on said vehicle for carrying a said refuse container between a lowered position and a raised dumping position, c. a male interengaging member mounted on said boom assembly and adapted to supportingly engage the said female member, d. locking means associated with said male member for selective locking engagement with said female member, e. means normally biasing said locking means toward locking position, f. and means responsive to the angular position of said boom assembly for overcoming said biasing means for disengaging said locking means from said female member.
Claim 3
Dependent Claim
29 words
and a valve connected between said source and said air chamber for pressurizing said chamber to extend said rod or alternately to exhaust said chamber to retract said rod.
Claim 4
Dependent Claim
29 words
and a valve connected between said source and said air chamber for pressurizing said chamber to extend said rod or alternately to exhaust said chamber to retract said rod.
Claim 5
Dependent Claim
186 words
In a refuse collection vehicle for use with a refuse container having a female interengaging member, the combination comprising: a. a body on said vehicle and with said body having an opening for receiving refuse, b. a boom assembly pivotally mounted on said vehicle for carrying a said refuse container between a lowered position and a raised dumping position, c. a male interengaging member mounted on said boom assembly and adapted to supportingly engage the said female member, d. locking means associated with said male member for selective locking engagement with said female member, said locking means comprising a pair of opposed extendable-retractable pins, e. a pair of generally vertical linkage arms pivotally mounted between their ends to said boom assembly, and with the lower end portions of said arms pivotally mounted to said pins, f. means normally biasing said locking means toward locking position and with said biasing means comprising springs extending between said boom assembly and said linkage arms between said first-named and second-named pivotal mountings, g. and means for overcoming said biasing means for disengaging said locking means from the said female member.
Claim 6
Dependent Claim
186 words
In a refuse collection vehicle for use with a refuse container having a female interengaging member, the combination comprising: a. a body on said vehicle and with said body having an opening for receiving refuse, b. a boom assembly pivotally mounted on said vehicle for carrying a said refuse container between a lowered position and a raised dumping position, c. a male interengaging member mounted on said boom assembly and adapted to supportingly engage the said female member, d. locking means associated with said male member for selective locking engagement with said female member, said locking means comprising a pair of opposed extendable-retractable pins, e. a pair of generally vertical linkage arms pivotally mounted between their ends to said boom assembly, and with the lower end portions of said arms pivotally mounted to said pins, f. means normally biasing said locking means toward locking position and with said biasing means comprising springs extending between said boom assembly and said linkage arms between said first-named and second-named pivotal mountings, g. and means for overcoming said biasing means for disengaging said locking means from the said female member.
Claim 7
Dependent Claim
47 words
The combination of claim 2 in which said means for overcoming said biasing means comprises: a. extensible means connecting the upper end portions of said linkage arms to cause pivoting of the linkage arms about the first-named pivotal mounting, b. and means to actuate said extensible means.
Claim 8
Dependent Claim
22 words
The combination of claim 3 which includes means responsive to the angular position of said boom assembly for operating said actuating means.
Claim 9
Dependent Claim
25 words
The combination of claim 3 in which: a. said extensible means comprises a rod connected to an air chamber, b. and said actuating means comprises:
Claim 10
Dependent Claim
23 words
The combination of claim 5 in which said air chamber is secured to the upper end portion of one of said linkage arms.
Claim 11
Dependent Claim
22 words
The combination of claim 5 which includes cam means responsive to the angular position of said boom Assembly for operating said valve.
Claim 12
Dependent Claim
17 words
The combination of claim 1 in which said means for overcoming said biasing means is cam operated.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |