US3597110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint construction
Assignee: General Electric Co
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Filing: 1969-10-23
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Granted: 1971-08-03
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Expires: 1989-10-23
Abstract
Abstract A joint construction incorporating a coacting bolt head-flange structure is disclosed. The flange includes a surface for juxtaposition with a mating flange and a leg extending away from the juncture of the structures to be joined in a direction generally normal to the mated surface of the flange, the leg including a nominally flat surface facing the axis of a bolthole provided in the flange and further including a recess located adjacent the juncture of the leg with the primary portion of the flange. The bolthead includes a flat located in juxtaposition with the nominally flat surface of the flange leg, a pin projecting from the flat into the recess and movably secured in the bolthead, and means constraining the pin to remain interposed in the recess.
Inventors
- 👤 Robert J Corsmeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:15
CPC Classifications
F; F16; F16B; F16B35/00; F16B35/04; F16B35/06; F01; F01D; F01D5/00; F01D5/02; F01D5/06; F01D5/066; F16B41/00; F16B41/002; Y; Y10; Y10S; Y10S411/00; Y10S411/999
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
297 words
A mechanical joint for joining a first structure which includes a bolting flange having limited accessibility to a second structure, said joint comprising: a first bolting flange on said first structure having at least one hole extending therethrough, said first flange including a leg extending away from the juncture of the said two structures in a direction generally normal to the mated surface of said first flange, said leg including a nominally flat surface facing the axis of said hole and further including a recess means located adjacent the juncture of said leg with the primary portion of said first flange, said recess means being aligned with a line normal to said nominally flat surface and intersecting the axis of said hole; a second flange on said second structure, said second flange including at least one hole extending therethrough; at least one bolt extending through both said flanges and having a nut threaded thereon to clamp said flanges together; said bolt including a head thereon having a flat parallel to the bolt axis and located in juxtaposition with said nominally flat surface, a hole originating on said flat and extending partially through said head along a line normal to said flat, a pin disposed in said hole and moveable between a position in which its outer end is flush with said flat and a position in which its outer end projects from said flat into said recess means wherein said pin is maintained in any given position in said hole by an interference fit therewith, and a second hole in said head originating from the surface of said head opposite said flat and extending parallel with the axis of said first hole into communication therewith, wherein said second hole has a smaller diameter than said first hole,
Claim 2
Dependent Claim
297 words
A mechanical joint for joining a first structure which includes a bolting flange having limited accessibility to a second structure, said joint comprising: a first bolting flange on said first structure having at least one hole extending therethrough, said first flange including a leg extending away from the juncture of the said two structures in a direction generally normal to the mated surface of said first flange, said leg including a nominally flat surface facing the axis of said hole and further including a recess means located adjacent the juncture of said leg with the primary portion of said first flange, said recess means being aligned with a line normal to said nominally flat surface and intersecting the axis of said hole; a second flange on said second structure, said second flange including at least one hole extending therethrough; at least one bolt extending through both said flanges and having a nut threaded thereon to clamp said flanges together; said bolt including a head thereon having a flat parallel to the bolt axis and located in juxtaposition with said nominally flat surface, a hole originating on said flat and extending partially through said head along a line normal to said flat, a pin disposed in said hole and moveable between a position in which its outer end is flush with said flat and a position in which its outer end projects from said flat into said recess means wherein said pin is maintained in any given position in said hole by an interference fit therewith, and a second hole in said head originating from the surface of said head opposite said flat and extending parallel with the axis of said first hole into communication therewith, wherein said second hole has a smaller diameter than said first hole,
Claim 3
Dependent Claim
27 words
The joint construction recited in claim 1 wherein said pin is a cylindrically shaped shell of thin spring material, said shell having a groove through its wall.
Claim 4
Dependent Claim
21 words
The joint construction recited in claim 1 including a spring urging said pin radially outwardly from the axis of said bolt.
Claim 5
Dependent Claim
47 words
The joint construction recited in claim 1 wherein the head of said bolt further includes a blind hole in the end thereof and extending thereinto along a line parallel to the bolt axis, said blind hole being in communication with said first-mentioned hole and said second hole.
Claim 6
Dependent Claim
132 words
A bolt which includes a head having a flat parallel to the bolt axis and which further comprises a hole originating on said flat and extending partially through said head along a line normal to said flat; a pin disposed in said hole and moveable between a position in which its outer end is flush with said flat and a position in which its outer end projects from said flat, said pin being maintained in any given position in said hole by an interference fit therewith; and a second hole in said head originating from the surface of said head opposite the said flat and extending parallel with and slightly offset from the axis of said first-mentioned hole into communication therewith, said second hole having a smaller diameter than said first-mentioned hole.
Claim 7
Dependent Claim
132 words
A bolt which includes a head having a flat parallel to the bolt axis and which further comprises a hole originating on said flat and extending partially through said head along a line normal to said flat; a pin disposed in said hole and moveable between a position in which its outer end is flush with said flat and a position in which its outer end projects from said flat, said pin being maintained in any given position in said hole by an interference fit therewith; and a second hole in said head originating from the surface of said head opposite the said flat and extending parallel with and slightly offset from the axis of said first-mentioned hole into communication therewith, said second hole having a smaller diameter than said first-mentioned hole.
Claim 8
Dependent Claim
43 words
The bolt recited in claim 5 wherein said head further includes a blind hole in the end thereof and extending thereinto along a line parallel to the bolt axis, said blind hole being in communication with said first-mentioned hole and said second hole.
Claim 9
Dependent Claim
288 words
A gas turbine engine rotor construction which includes a series of alternately disposed spacers and disks jointed by a plurality of disk to spacer joint constructions, each of which comprises; a first bolting flange on said spacer having a plurality of boltholes extending therethrough, said first flange including a leg extending away from the juncture of a disk and spacer in a direction generally normal to the mated surface of said first flange, said leg including an inwardly directed cylindrical surface and further including recess means located adjacent the juncture of said leg with the primary portion of said first flange, said recess means intersecting the axis of each bolthole; a second flange on said disk, said second flange including a plurality of boltholes extending therethrough and aligned with the boltholes in said first flange; a plurality of bolts extending through said boltholes and each having a nut threaded thereon to clamp said flanges together; each bolt including a head thereon having a flat parallel to the bolt axis and located in juxtaposition with said cylindrical surface, a hole originating on said flat and extending partially through said head along a line normal to said flat, a pin disposed in said hole and moveable between a position in which its outer end is flush with said flat and a position in which its outer end projects from said flat wherein said pin is maintained in any given position in said hole by an interference fit therewith, and a second hole in said head originating from the surface of said head opposite said flat and extending parallel with the axis of said first-mentioned hole into communication therewith wherein said second hole has a smaller diameter than said first hole.
Claim 10
Dependent Claim
288 words
A gas turbine engine rotor construction which includes a series of alternately disposed spacers and disks jointed by a plurality of disk to spacer joint constructions, each of which comprises; a first bolting flange on said spacer having a plurality of boltholes extending therethrough, said first flange including a leg extending away from the juncture of a disk and spacer in a direction generally normal to the mated surface of said first flange, said leg including an inwardly directed cylindrical surface and further including recess means located adjacent the juncture of said leg with the primary portion of said first flange, said recess means intersecting the axis of each bolthole; a second flange on said disk, said second flange including a plurality of boltholes extending therethrough and aligned with the boltholes in said first flange; a plurality of bolts extending through said boltholes and each having a nut threaded thereon to clamp said flanges together; each bolt including a head thereon having a flat parallel to the bolt axis and located in juxtaposition with said cylindrical surface, a hole originating on said flat and extending partially through said head along a line normal to said flat, a pin disposed in said hole and moveable between a position in which its outer end is flush with said flat and a position in which its outer end projects from said flat wherein said pin is maintained in any given position in said hole by an interference fit therewith, and a second hole in said head originating from the surface of said head opposite said flat and extending parallel with the axis of said first-mentioned hole into communication therewith wherein said second hole has a smaller diameter than said first hole.
Claim 11
Dependent Claim
27 words
The joint construction recited in claim 7 wherein said pin is a cylindrically shaped shell of thin spring material, said shell having a groove through its wall.
Claim 12
Dependent Claim
46 words
The rotor construction recited in claim 7 wherein the head of said bolt further includes a blind hole in the end thereof and extending thereinto along a line parallel to the bolt axis, said blind hole being in communication with said first-mentioned hole and second hole.
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |