Road structure – process – or apparatus – Apparatus – Means to install or form joint
Patent
1991-03-18
1993-03-02
Britts, Ramon S.
Road structure, process, or apparatus
Apparatus
Means to install or form joint
404 72, E01C 2302, E01C 1124
Patent
active
051903970
ABSTRACT:
An improved method and apparatus of inserting dowel bars into a newly formed concrete road surface at locations for at least partially forming transverse joints therein includes a slip forming machine for laying a strip of newly formed concrete. A dowel bar placement pan subframe is operably connected to the frame of the machine and extends generally transversely to the direction of forward movement of the frame. The subframe has a plurality of parallel slots disposed therein along the length thereof. A trolley is provided for traveling back and forth across the subframe and has a mechanism therein for storing a plurality of dowel bars therein and permitting the stored dowel bars to roll downwardly one behind the other. A dowel bar stopping device is provided for stopping the lowermost one of the dowel bars at a predetermined position with respect to the trolley. Retainers are operably attached to the subframe and disposed in each of the slots for holding a respective dowel bar in each slot thereof prior to insertion of the dowel bars into the newly formed concrete road surface. The method of using this apparatus includes moving the frame of the machine in a forward direction and slip forming concrete thereby. The trolley is moved across the subframe for each transverse joint to be formed and before the trolley is moved across the subframe, it is filled with dowel bars. The lowermost one of the dowel bars is stopped and each of the lowermost dowel bars is sequentially pushed off of the device which stops it. After the lowermost dowel bar is pushed off of the stops, it is guided into an empty one of the holding devices that it has just passed over as the trolley is moved across the subframe. Once all of the dowel bars have been distributed into the holding devices in the subframe, all of the dowel bars are simultaneously pushed into the newly formed concrete for partially forming a transverse joint therein.
REFERENCES:
patent: 2295947 (1942-09-01), Heltzel
patent: 4433936 (1984-02-01), Moser
patent: 4688963 (1987-08-01), Ritchey et al.
patent: 4798495 (1989-01-01), Laueppi et al.
patent: 4799820 (1989-01-01), Laeuppi et al.
Bengford Steven C.
Small Ronald D.
Britts Ramon S.
Connolly Nancy P.
Gomaco Corporation
LandOfFree
Dowel bar insertion method and apparatus for concrete paving mac does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dowel bar insertion method and apparatus for concrete paving mac, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dowel bar insertion method and apparatus for concrete paving mac will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-123200