# US 4,647,229 A · Shaft restraining device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,647,229 A - Document ID: US4647229A - Status: Granted - Kind: A - Application number: 06/779,427 - Filed: 1985-09-24 - Granted: 1987-03-03 - Earliest claimed: 1985-09-24 - Assignees: Lamcor, Inc. - Inventors: Simeon A. Melugin - Web page: https://patentgrep.com/patent/US4647229A ## CPC - F16C 13/04: Bearings with only partial enclosure of the member to be borne; Bearings with local support at two or more points - F16C 17/02: for radial load only - F16C 2300/02: General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned - Y10T 70/5664: Latching bolt - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Two spaced support members support a shaft horizontal in partial lower bearing journal surfaces. A retractable pin is positioned above the shaft at each support member to retain the shaft in the journal surfaces. A shelf at each journal surface in front of the pins provides for loading and unloading of the shaft. A flat locking surface fixed to rotate with the shaft and a mating engagable locking member prevent rotation of the shaft. ## Claims ### Claim 1 A shaft restraining device comprising two spaced support members each having a substantially horizontal journal surface for rotatably supporting the shaft on a lower surface thereof, a retractable pin positioned extending over the shaft at each support member to restrain removal of the shaft from each of said journal surface, and a shelf on each of said support members extending from said journal surfaces in front of each of said retractable pins. ### Claim 2 (depends on 1) The device of claim 1 further comprising means biasing said retractable pin to an extended position over the shaft. ### Claim 3 (depends on 1) The device of claim 1 wherein said shelf is spaced below a lower surface of said retractable pin to permit lateral sliding of the shaft on said shelf against said retractable pin to retract said retractable pin sufficient for entry of said shaft into said journal surface. ### Claim 4 (depends on 1) The device of claim 1 further including a flat locking surface fixed for rotation with the shaft, a locking member engaging said flat locking surface to prevent rotation of the shaft. ### Claim 5 (depends on 4) The device of claim 4 wherein said shaft includes a collar portion for restraint of axial movement with said support member, said collar portion having said flat surface. ### Claim 6 (depends on 4) The device of claim 4 wherein said locking member is retained in said support member to move substantially tangentially relative to the shaft from a first disengaged position to a second engaged position with said locking surface. ### Claim 7 (depends on 4) The device of claim 4 wherein the shaft includes an enlarged portion, said flat surface formed on said enlarged portion. ### Claim 8 (depends on 7) The device as claimed in claim 7 wherein the flat surface is a locking surface rotationally associated with the shaft, said flat locking surface being substantially parallel to a tangent to the shaft, and said locking surface being rotatable with said shaft and said locking member extending adjacent said flat locking surface to engage said flat locking surface to prevent the shaft from rotating. ### Claim 9 (depends on 8) The device of claim 8 wherein said shaft includes a collar portion for restraint of axial movement with said support member, said collar portion having said flat surface. ### Claim 10 (depends on 9) The device of claim 9, wherein said locking member is retained in said support member to move substantially tangentially relative to the shaft from a first disengaged position to a second engaged position with said locking surface. ### Claim 11 A shaft rotational locking device comprising a member for rotatably supporting the shaft, a flat locking surface rotationally associated with the shaft, said flat locking surface substantially parallel to a tangent to the shaft, and a locking member for engagement with said locking surface to prevent rotation of the shaft, said locking surface being rotatable with said shaft, and said locking member extending adjacent said flat locking surface to engage said flat locking surface to prevent the shaft from rotating. ### Claim 12 A shaft restraining device comprising two spaced support members each having a substantially horizontal journal surface for rotatably supporting the shaft on a lower surface thereof, a retractable pin positioned to extend over the shaft at each support member to restrain removal of the shaft from each of said journal surface, and a shelf on each of said support members extending from said journal surfaces in front of each of said retractable pins, the pin having a surface for engaging the shaft, said surface being normally spaced apart from the shaft during shaft rotation. ### Claim 13 A shaft restraining device comprising two spaced support members each having a substantially horizontal journal surface for rotatably supporting the shaft on a lower surface thereof, a retractable pin positioned to extend over the shaft at each support member to retrain removal of the shaft from each of said journal surface, the pin having a surface for restrainingly engaging the shaft, said surface being spaced apart from the shaft during normal shaft rotation, a shelf on each of said support members extending from said journal surfaces in front of each of said retractable pins, said shelf being spaced below a lower surface of said retractable pin to permit lateral sliding of the shaft on said shelf, said retractable pin being retractable sufficient for entry of said shaft into said journal surface, a flat locking surface fixed for rotation with the shaft, said surface being substantially parallel to a tangent to the shaft, and a locking member for engaging said flat locking surface to prevent rotation of the shaft. ### Claim 14 (depends on 13) The device of claim 13 wherein said shaft includes a collar portion for restraint of axial movement with said support member, said collar portion having said flat surface. ### Claim 15 (depends on 14) The device of claim 14, wherein said locking member is retained in said support member to move substantially tangentially relative to the shaft from a first disengaged position to a second engaged position with said locking surface.