US4081191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Truck door lock
Assignee: Individual
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Filing: 1976-03-01
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Granted: 1978-03-28
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Expires: 1996-03-01
Abstract
Abstract A lock assembly for locking or unlocking the door of a truck or trailer body from a handle located inside the cab of the tractor. The tractor cab is fitted with a pivotable handle lever mounted on about fixed rachet gear engaged by a pivotable tooth on the handle lever, with the handle lever linked by a lock rod that extends under the floor of an attached truck or trailer body to a latch fixed on the door of the truck or trailer body. The lock rod may be fitted with coupling means for separation into a tractor section and a trailer section for use when the trailer section is detached from the tractor. The door latch is in the form of a bolt slidable axially through an eye member fixed to the truck door or alternately the bolt is bent at an angle to rotate about a fixed bracket on the door, with the bolt coupled to the lock rod by helical-slotted collar that translates reciprocal axial motion of the lock rod into rotary motion of the bolt.
Inventors
- 👤 Matthew Capozello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:03
CPC Classifications
E; E05; E05B; E05B83/00; E05B83/02; E05B83/12; E05B53/00; Y; Y10; Y10S; Y10S292/00; Y10S292/25; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1075; Y10T292/1076; Y10T292/1077
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
304 words
A lock assembly for latching or unlatching the door of a truck body attached to a tractor, said assembly linked to a control means in the cab of the tractor and joined to a door latch means in the truck body, said control means comprising a lever pivotally mounted in the cab and pivotally linked to a first rod that extends under the truck body, said first rod slidably mounted in a bearing fixed to said truck body such that rotational movement of the lever causes axial movement of the said first rod, said door latch means comprising a lock bolt member fixed to a second rod, said second rod linked to said first rod and fixed at its exterior end to said lock bolt member, said lock bolt member extending radially to the said second rod and a bracket member fixed to a door of the truck body so as to project beyond said door in a position in which the lock bolt member in a first radial position engages the said bracket member, so as to prevent opening of said door, and in a second radial position in which the lock bolt member is clear of said bracket member, in which said second rod is linked to said first rod by coupling means that translates axial motion of the first rod into rotational movement of the second rod, in which the coupling means comprises a sleeve fixed to one of said rods and slidably mounted over the other of said rods, said sleeve formed with a through helical shaped slot which engages a detent radially fixed to the said other rod, with the second rod mounted in a bearing fixed to the truck body, said second rod having flange means that prevents axial movement but accomodates rotational movement of said second rod.
Claim 2
Dependent Claim
304 words
A lock assembly for latching or unlatching the door of a truck body attached to a tractor, said assembly linked to a control means in the cab of the tractor and joined to a door latch means in the truck body, said control means comprising a lever pivotally mounted in the cab and pivotally linked to a first rod that extends under the truck body, said first rod slidably mounted in a bearing fixed to said truck body such that rotational movement of the lever causes axial movement of the said first rod, said door latch means comprising a lock bolt member fixed to a second rod, said second rod linked to said first rod and fixed at its exterior end to said lock bolt member, said lock bolt member extending radially to the said second rod and a bracket member fixed to a door of the truck body so as to project beyond said door in a position in which the lock bolt member in a first radial position engages the said bracket member, so as to prevent opening of said door, and in a second radial position in which the lock bolt member is clear of said bracket member, in which said second rod is linked to said first rod by coupling means that translates axial motion of the first rod into rotational movement of the second rod, in which the coupling means comprises a sleeve fixed to one of said rods and slidably mounted over the other of said rods, said sleeve formed with a through helical shaped slot which engages a detent radially fixed to the said other rod, with the second rod mounted in a bearing fixed to the truck body, said second rod having flange means that prevents axial movement but accomodates rotational movement of said second rod.
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) | 1981-03-27 | 1981-09-26 | 1982-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-27 | 1985-09-26 | 1986-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-27 | 1989-09-26 | 1990-03-28 | $7700.00 | Window Closed / Lapsed |