US3867048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug connections for vertically abutting frame sections
Assignee: Individual
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Filing: 1973-02-20
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Granted: 1975-02-18
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Expires: 1993-02-20
Abstract
Abstract A plug connector for joining together frame sections comprising a bar which has a recess in at least one end of it. There is a cross wall member inside the recess, spaced from pieces, end of the bar, and having a threaded hole in it for receiving a screw bolt. The screw bolt has an enlarged head which protrudes from the end of the bar, a threaded end portion for threading into the cross wall member, and a portion intermediate the head and threaded portion which is square in cross-section and has a width at least equal to the diameter of the threaded portion. A biasing means is mounted about the screw bolt and positioned between the cross wall and an auxilliary pusher means. The enlarged head of the screw bolt is fitted into a hole and slot-arrangement in the member being joined, and then the bar is rotated in a given direction so as to screw the screw bolt inwardly thereby making a solid joint. A guide plate having a square aperture of a dimension which prevents rotation is mounted on the intermediate portion of the screw bolt, this guide member having an extension which preferably has indicia marked on it for indicating the direction of rotation to tighten the connection. It is furthermore possible to provide various contoured members so that the plug connector can connect rectilinear as well as curvilinear ppieces, i.e., pipes, etc.
Inventors
- 👤 Abraham Endzweig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:31
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/18; F16B2200/00; F16B2200/20; F16B2200/205; F16B2200/40
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
171 words
A plug connection for frame sections comprising a bar having a recess at one end thereof; a cross wall member inside the recess and spaced from the end of the bar, an auxiliary pusher member located at the end of the bar, said cross wall member being provided with a threaded hole; a screw bolt having an enlarged head, a threaded end portion being threaded into said cross wall member, and a portion intermediate said head and threaded portion being square in cross section and the width thereof being at least equal to the diameter of the threaded portion; a biasing means about the screw bolt and positioned between the cross wall and the auxiliary pusher means; and a guide plate being non-rotatably mounted on the intermediate portion of the screw bolt, with the pusher means biasing the guide plate towards the head; the head of the screw bolt being beyond the end of the bar and adapted to fit into a hole and slot means in a member being connected.
Claim 2
Dependent Claim
171 words
A plug connection for frame sections comprising a bar having a recess at one end thereof; a cross wall member inside the recess and spaced from the end of the bar, an auxiliary pusher member located at the end of the bar, said cross wall member being provided with a threaded hole; a screw bolt having an enlarged head, a threaded end portion being threaded into said cross wall member, and a portion intermediate said head and threaded portion being square in cross section and the width thereof being at least equal to the diameter of the threaded portion; a biasing means about the screw bolt and positioned between the cross wall and the auxiliary pusher means; and a guide plate being non-rotatably mounted on the intermediate portion of the screw bolt, with the pusher means biasing the guide plate towards the head; the head of the screw bolt being beyond the end of the bar and adapted to fit into a hole and slot means in a member being connected.
Claim 3
Dependent Claim
65 words
The plug connection as claimed in claim 1 wherein said pusher means is provided with a center opening having a diameter greater than the diagonals of the intermediate portion of the screw bolt with the pusher means surrounding the screw bolt and being moveable along its axis, the thickness of the pusher means being approximately the length of the intermediate portion of the screw bolt.
Claim 4
Dependent Claim
27 words
The plug connection as claimed in claim 2 further comprising a washer mounted on the screw bolt and positioned between the biasing means and the pusher means.
Claim 5
Dependent Claim
36 words
The plug connection as claimed in claim 1 wherein said guide plate has an angled extension being a size and shape adapted to cover the open end of the member to which the bar is connected.
Claim 6
Dependent Claim
222 words
A plug connection for frame sections comprising a bar having a recess at one end thereof; a cross wall member inside the recess and spaced from the end of the bar, an auxiliary pusher member located at the end of the bar, said cross wall member being provided with a threaded hole; a screw bolt having an enlarged head, a threaded end portion being threaded into said cross wall member, and a portion intermediate said head and threaded portion being square in cross section and the width thereof being at least equal to the diameter of the threaded portion; and a Biasing means about the screw bolt and positioned between the cross wall and the auxiliary pusher means; the head of the screw bolt being beyond the end of the bar and adapted to fit into a hole and slot means in a member being connected; wherein the auxiliary pusher means is in the shape of a pipe disk and has a center square opening formed therein of a size non-rotatably fitting on the intermediate portion of the screw bolt, the profile of the pipe disk face of the auxiliary pusher means opposite the biasing means having at least one concave recess of a radius adapted to be commensurate with that of a pipe to which the bar is to be connected.
Claim 7
Dependent Claim
222 words
A plug connection for frame sections comprising a bar having a recess at one end thereof; a cross wall member inside the recess and spaced from the end of the bar, an auxiliary pusher member located at the end of the bar, said cross wall member being provided with a threaded hole; a screw bolt having an enlarged head, a threaded end portion being threaded into said cross wall member, and a portion intermediate said head and threaded portion being square in cross section and the width thereof being at least equal to the diameter of the threaded portion; and a Biasing means about the screw bolt and positioned between the cross wall and the auxiliary pusher means; the head of the screw bolt being beyond the end of the bar and adapted to fit into a hole and slot means in a member being connected; wherein the auxiliary pusher means is in the shape of a pipe disk and has a center square opening formed therein of a size non-rotatably fitting on the intermediate portion of the screw bolt, the profile of the pipe disk face of the auxiliary pusher means opposite the biasing means having at least one concave recess of a radius adapted to be commensurate with that of a pipe to which the bar is to be connected.
Claim 8
Dependent Claim
206 words
A plug connection for frame sections comprising a bar having a recess at one end thereof; a cross wall member inside the recess and spaced from the end of the bar, an auxiliary pusher member located at the end of the bar, said cross wall member being provided with a threaded hole; a screw bolt having an enlarged head, a threaded end portion being threaded into said cross wall member, and a portion intermediate said head and threaded portion being square in cross section and the width thereof being at least equal to the diameter of the threaded portion; and a biasing means about the screw bolt and positioned between the cross wall and the auxiliary pusher means; the head of the screw bolt being beyond the end of the bar and adapted to fit into a hole and slot means in a member being connected; wherein the auxiliary pusher means is in the shape of a disk having an opening formed therein, accommodating the intermediate portion of the screw bolt, the face of the disk towards the head of the screw bolt having a hemispherical concave contour which is adapted to be commensurate with a ball-shaped member to which the bar is to be connected.
Claim 9
Dependent Claim
206 words
A plug connection for frame sections comprising a bar having a recess at one end thereof; a cross wall member inside the recess and spaced from the end of the bar, an auxiliary pusher member located at the end of the bar, said cross wall member being provided with a threaded hole; a screw bolt having an enlarged head, a threaded end portion being threaded into said cross wall member, and a portion intermediate said head and threaded portion being square in cross section and the width thereof being at least equal to the diameter of the threaded portion; and a biasing means about the screw bolt and positioned between the cross wall and the auxiliary pusher means; the head of the screw bolt being beyond the end of the bar and adapted to fit into a hole and slot means in a member being connected; wherein the auxiliary pusher means is in the shape of a disk having an opening formed therein, accommodating the intermediate portion of the screw bolt, the face of the disk towards the head of the screw bolt having a hemispherical concave contour which is adapted to be commensurate with a ball-shaped member to which the bar is to be connected.
Claim 10
Dependent Claim
46 words
The plug connection as claimed in claim 6 wherein the opening in the disk is square and of a size non-rotatably fitting onto the intermediate portion of the screw bolt; the enlarged head of the screw bolt being flattened and having a major and minor dimension.
Claim 11
Dependent Claim
45 words
The plug connection as claimed in claim 6 wherein the opening in the disk is large enough to permit the intermediate portion of the screw bolt to rotate therein; the enlarged head of the screw bolt being flattened and having a major and minor dimension.
Claim 12
Dependent Claim
53 words
The plug connection as claimed in claim 1 wherein the bar is provided with one of said connectors at opposite ends, the screw bolt of each of said connectors having a different direction thread from each other so that when the bar is rotated one way the screw bolts are simultaneously moved in.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |