Patent US3912239A successfully refreshed from Google Patents.
US3912239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for rotatably driving and supplying water to a mixing drum
Assignee: Boeing North American Inc
•
Filing: 1974-12-19
•
Granted: 1975-10-14
•
Expires: 1994-12-19
Abstract
Abstract Apparatus for rotatably driving and supplying water to a concrete mixing drum which includes a driving member secured to an end wall of the drum concentric with the axis of rotation and power means drivingly engaging the driving member to rotate the member and drum. An annulus having a continuous internal recess and at least one water inlet is slidably received on and circumferentially encloses a portion of the exterior surface of the driving member. The recess of the annulus bounded by the annulus and the enclosed portion of the driving member provides a water supply chamber. Water passages through the driving member provide fluid communication between the water supply chamber and additional water passages through the end wall of the mixing drum whereby water supplied through the annulus inlet may be delivered through the passages in the driving member and the end wall of the mixing drum to the interior of the mixing drum. Sealing means provided between interfacing surfaces of the driving member and annulus provide a fluid seal at each side of the water supply chamber while permitting relative movement between the annulus and the driving member.
Inventors
- 👤 Donald L Ries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:39
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/42; B28C5/4203; B28C5/4231; B28C5/4206; B28C5/421; B28C5/4217
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
141 words
Apparatus for rotatably driving a mixing drum and supplying fluid thereto comprising means mounting said drum for rotation about an axis thereof, a driving member secured to an end wall of said drum concentric with said axis, means drivingly engaging said driving member for rotating said member and said drum about said axis, an annulus slidably received on and circumferentially enclosing a portion of said driving member, said annulus having at least one interior surface spaced from an oppositely facing surface of said driving member to form a water chamber therebetween, fluid passage means through said driving member and through said end wall, said fluid passage means providing fluid communication between said fluid chamber and the interior of said drum, and fluid inlet means through said annulus for Delivering water to said chamber and through said passage means to said drum.
Claim 2
Dependent Claim
141 words
Apparatus for rotatably driving a mixing drum and supplying fluid thereto comprising means mounting said drum for rotation about an axis thereof, a driving member secured to an end wall of said drum concentric with said axis, means drivingly engaging said driving member for rotating said member and said drum about said axis, an annulus slidably received on and circumferentially enclosing a portion of said driving member, said annulus having at least one interior surface spaced from an oppositely facing surface of said driving member to form a water chamber therebetween, fluid passage means through said driving member and through said end wall, said fluid passage means providing fluid communication between said fluid chamber and the interior of said drum, and fluid inlet means through said annulus for Delivering water to said chamber and through said passage means to said drum.
Claim 3
Dependent Claim
35 words
The apparatus defined by claim 1 wherein a continuous recess is provided interiorly of said annulus and said water chamber is formed by said recess bounded by said circumferentially enclosed portion of said driving member.
Claim 4
Dependent Claim
54 words
The apparatus defined by claim 1 wherein said fluid passage means through said driving member includes an annular recess in said driving member bounded by said end wall of said drum and a plurality of fluid passages having one end open to said water chamber and the other end open to said annular recess.
Claim 5
Dependent Claim
43 words
The apparatus defined by claim 3 wherein said fluid passage means through said end wall comprise a plurality of circumferentially spaced openings through said wall and said annular recess provides fluid communication between said fluid passages through said driving member and said openings.
Claim 6
Dependent Claim
95 words
The apparatus defined by claim 1 wherein said annulus includes first and second leg elements defining a recess therebetween, said leg elements include surfaces proximate their respective ends which slidably engage axially spaced annular portions of said driving member, said water chamber is formed by said recess bounded by said leg elements and said driving member between said axially spaced annular portions, and sealing means between said end surfaces of said leg elements and said axially spaced portions of said driving member, said sealing means permitting relative movement between said driving member and said annulus.
Claim 7
Dependent Claim
71 words
The apparatus defined by claim 5 wherein said driving member comprises a flange having a drum end wall abutting surface on one axial side and a stepped hub extending axially outward from the other side of said member, said stepped hub including first and second concentric cylindrical surfaces, and said end surfaces of said first and second leg elements of said annulus respectively slidably engage said first and second cylindrical surfaces.
Claim 8
Dependent Claim
43 words
The apparatus defined by claim 6 wherein at least one circumferentially extending groove is provided to each of said cylindrical surfaces and sealing means are disposed in said grooves to seal between said end surfaces of said leg elements and said cylindrical surfaces.
Claim 9
Dependent Claim
67 words
The apparatus defined by claim 6 wherein the diameter of one of said cylindrical surfaces is greater than the diameter of the other cylindrical surface, the cylindrical surface of greater diameter is axially positioned between said flange and said other cylindrical surface, and a plurality of fluid passages through said driving member open into said water chamber through circumferentially spaced ports radially located between said cylindrical surfaces.
Claim 10
Dependent Claim
46 words
The apparatus defined by claim 8 wherein an annular recess is provided to the drum end wall abutting surface of said driving member, said annular recess being located radially inward of said flange, and said fluid passages through said driving member open into said annular recess.
Claim 11
Dependent Claim
41 words
The apparatus defined by claim 9 including an annular groove in said end wall abutting surface radially outward of said annular recess and sealing means axially compressed in said groove between said driving member and the end wall of said drum.
Claim 12
Dependent Claim
143 words
The apparatus defined by claim 1 wherein said means drivingly engaging said driving member comprises a transmission including power input means and an output shaft mounted for rotary movement, said output shaft extending axially outward from means mounting it for rotary movement, said driving member comprises a flange having a drum end wall abutting surface on one axial side and a hub extending axially outward from the other side of said member, said annulus is slidably received on said hub, sealing means disposed between said annulus and said hub on axially opposite sides of said water chamber permitting rotary and axial movement between said driving member and said annulus, means drivingly connecting said hub to said axially extending output shaft, and means associated with said output shaft mounting means for limiting axial movement of said annulus in one direction relative to said hub.
Claim 13
Dependent Claim
57 words
The apparatus defined by claim 11 wherein said transmission comprises a gear train supported by a stationary housing, said output shaft extends axially outward from rotary mounting means supported by said housing and an end surface of said housing supporting said rotary mounting means limits axial movement of said annulus in a direction away from said flange.
Claim 14
Dependent Claim
152 words
A coupling assembly for rotatably driving an end wall of a mixing drum and supplying water to passages provided through the end wall comprising a driving member including a flange having a drum end wall abutting surface on one axial side of said member and a hub extending axially outward from the other said of said member, means for drivingly connecting said flange to said end wall, means for drivingly connecting said hub to a power output to rotate said member, an annulus slidably received on and circumferentially enclosing an axial length of said hub and having at least one interior surface spaced from a facing surface of said hub to form a water chamber therebetween, water inlet means through said annulus for supplying water to said chamber, and water passage means through said driving member and providing fluid communication between said water chamber and said one side of said driving member.
Claim 15
Dependent Claim
152 words
A coupling assembly for rotatably driving an end wall of a mixing drum and supplying water to passages provided through the end wall comprising a driving member including a flange having a drum end wall abutting surface on one axial side of said member and a hub extending axially outward from the other said of said member, means for drivingly connecting said flange to said end wall, means for drivingly connecting said hub to a power output to rotate said member, an annulus slidably received on and circumferentially enclosing an axial length of said hub and having at least one interior surface spaced from a facing surface of said hub to form a water chamber therebetween, water inlet means through said annulus for supplying water to said chamber, and water passage means through said driving member and providing fluid communication between said water chamber and said one side of said driving member.
Claim 16
Dependent Claim
24 words
The coupling assembly defined by claim 13 wherein said water chamber is formed by an interior recess of said annulus bounded by said hub.
Claim 17
Dependent Claim
88 words
The coupling assembly defined by claim 13 wherein said annulus includes first and second leg elements defining a recess therebetween, said leg elements include surfaces proximate their respective ends which slidably engage axially spaced annular portions of said hub, said water chamber is formed by said recess bounded by said leg elements and said hub between said axially spaced portions, and sealing means between the end surfaces of said leg elements and said axially spaced portions of said hub permitting relative movement between said annulus and said hub.
Claim 18
Dependent Claim
60 words
The coupling assembly defined by claim 13 wherein said water passage means through said driving member includes a plurality of passages through said member and each of said passages open at one end into said water chamber and at the opposite end into a annular recess in said one axial side of said driving member radially inward of said flange.
Claim 19
Dependent Claim
40 words
The coupling assembly defined by claim 16 including an annular sealing ring recess in said one axial side of said driving member located radially outward of said annular recess forming part of said water passage means through said driving member.
Claim 20
Dependent Claim
174 words
In a transit mixer for transporting and mixing a load of concrete or like material including a motor truck and an elongate mixing drum mounted at one end of said truck for rotation about an axis of said drum, a drum driving member secured to one end surface of said drum concentric with said axis, power transmission means supported by said truck and including an output shaft drivingly connected to said driving member, an annulus slidably received upon and circumferentially enclosing an axial length of said driving member, at least one interior surface of said annulus being spaced from a facing surface of said hub to form a water chamber therebetween, fluid passage means through said end wall of said drum, fluid passage means through said driving member and providing fluid communication between said water chamber and said end wall passage means, fluid inlet means through said annulus for supplying water to said chamber, and seal means between said annulus and said driving member permitting movement of said driving member relative to said annulus.
Claim 21
Dependent Claim
174 words
In a transit mixer for transporting and mixing a load of concrete or like material including a motor truck and an elongate mixing drum mounted at one end of said truck for rotation about an axis of said drum, a drum driving member secured to one end surface of said drum concentric with said axis, power transmission means supported by said truck and including an output shaft drivingly connected to said driving member, an annulus slidably received upon and circumferentially enclosing an axial length of said driving member, at least one interior surface of said annulus being spaced from a facing surface of said hub to form a water chamber therebetween, fluid passage means through said end wall of said drum, fluid passage means through said driving member and providing fluid communication between said water chamber and said end wall passage means, fluid inlet means through said annulus for supplying water to said chamber, and seal means between said annulus and said driving member permitting movement of said driving member relative to said annulus.
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) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |