US4167381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal casting equipment having an interchangeable
Assignee: Individual
•
Filing: 1977-10-04
•
Granted: 1979-09-11
•
Expires: 1997-10-04
Abstract
Abstract A centrifugal casting machine has an interchangeable casting head to permit the head to be rapdily and easily changed from one mold size to another. The head is removably affixed to the upper end of the motor driven shaft of the machine as by bolting to a flange on the shaft.
Inventors
- 👤 Lawrence J. Hilmoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:56
CPC Classifications
B; B29; B29C; B29C39/00; B29C39/02; B29C39/04; B29C39/08; B29C33/00; B29C33/30; B29C33/306; B29K; B29K2821/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
125 words
In a centrifugal casting machine having a generally vertical shaft mounted in a frame, rotary drive means coupled to said shaft for rotating same, and head for receiving a casting mold mounted on said shaft along the axis thereof for being rotated by said shaft, the improvement comprising: a collar on the upper end of said shaft having a flange extending thereabove co-axial with said shaft; said head having an opening in the central portion thereof for receiving said flange when said head is placed on said shaft so that said head abuts said collar; fastener means for fixing said head to said collar; and a key received in said collar and head and extending therebetween for preventing relative rotation between said collar and head.
Claim 2
Dependent Claim
125 words
In a centrifugal casting machine having a generally vertical shaft mounted in a frame, rotary drive means coupled to said shaft for rotating same, and head for receiving a casting mold mounted on said shaft along the axis thereof for being rotated by said shaft, the improvement comprising: a collar on the upper end of said shaft having a flange extending thereabove co-axial with said shaft; said head having an opening in the central portion thereof for receiving said flange when said head is placed on said shaft so that said head abuts said collar; fastener means for fixing said head to said collar; and a key received in said collar and head and extending therebetween for preventing relative rotation between said collar and head.
Claim 3
Dependent Claim
18 words
The improvement according to claim 1 including opposing keyways in said collar and head for receiving said key.
Claim 4
Dependent Claim
45 words
The improvement according to claim 2 wherein said key is elongated in one dimension and wherein said key and keyways are so oriented that said key extends radially away from the axis of rotation of said shaft in the direction of extension of said key.
Claim 5
Dependent Claim
36 words
The improvement according to claim 3 wherein one of said keyways is formed as a notch terminating in an end radially displaced from the axis of said shaft for retaining said one key in said keyway.
Claim 6
Dependent Claim
18 words
The improvement according to claim 4 wherein said keyway formed as said notch is located in said head.
Claim 7
Dependent Claim
19 words
The improvement according to claim 1 wherein said head includes a plate having an opening for receiving said flange.
Claim 8
Dependent Claim
18 words
The improvement according to claim 6 wherein the height of said flange equals the thickness of said plate.
Claim 9
Dependent Claim
19 words
The improvement according to claim 6 wherein said fastener means comprises bolts extending through said plate into said collar.
Claim 10
Dependent Claim
22 words
Th improvement according to claim 1 including a casting mold received on said head and mounted on a lost wax casting arm.
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) | 1982-09-10 | 1983-03-12 | 1983-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-10 | 1987-03-12 | 1987-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-10 | 1991-03-12 | 1991-09-11 | $7700.00 | Window Closed / Lapsed |