US4531855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable arm
Assignee: Individual
•
Filing: 1983-05-12
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Granted: 1985-07-30
•
Expires: 2003-05-12
Abstract
Abstract An adjustable arm having a joint (17,19) at each end with a push rod (35) extending axially through the arm with each end of the rod bearing against one of the components (23,45) of the adjacent joint and means (31) for applying a compressive force to the push rod and thereby simultaneously lock both joints against relative movement.
Inventors
- 👤 Frederick A. Wallis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:19
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/02; F16M11/04; F16M11/06; F16M11/12; F16M11/14; F16C; F16C11/00; F16C11/04; F16C11/10; F16C11/103; F16C11/106; F16M11/20; F16M11/2007; F16M11/2035; F16M11/2078; F16M2200/00; F16M2200/02; F16M2200/021; F16M2200/022; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32008; Y10T403/32024; Y10T403/32254; Y10T403/32262; Y10T403/32311
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
90 words
An adjustable arm having a knuckle joint at one end and a ball and socket joint at the other end, a push rod extending axially along said arm and slidably mounted therein, one end of the rod bearing against the eye of the knuckle joint and the other end of the rod being against the socket of the ball and socket joint and means for applying a compressive force to said rod comprising a collar screwed onto the socket over the ball for simultaneously locking both joints against relative movement.
Claim 2
Dependent Claim
90 words
An adjustable arm having a knuckle joint at one end and a ball and socket joint at the other end, a push rod extending axially along said arm and slidably mounted therein, one end of the rod bearing against the eye of the knuckle joint and the other end of the rod being against the socket of the ball and socket joint and means for applying a compressive force to said rod comprising a collar screwed onto the socket over the ball for simultaneously locking both joints against relative movement.
Claim 3
Dependent Claim
29 words
An adjustable arm as claimed in claim 1 wherein part of one of the joints forms a base through which the arm may be mounted on a suitable structure.
Claim 4
Dependent Claim
222 words
An adjustable arm comprising an intermediate arm section and a pair of end arm sections disposed one at each end of the intermediate section, a joint connecting each end section to the respective end of the intermediate section for angular movement therebetween about at least one axis, each joint having a first part attached to the intermediate section and a second part attached to the respective end section, a push rod extending axially along the intermediate section with the respective ends of the push rod located against said second parts of the joints, and means for effecting relative movement between the intermediate section and the push rod between a first position in which the ends of the push rod are in sliding engagement with the respective second parts of the joints and a second position in which the ends of the rods are in frictional engagement with respect to said second parts, one of said joints comprising a knuckle joint and the other of said joints comprising a ball and socket joint, one end of said rod bearing against the eye of said knuckle joint and the other end of said rod being against the socket of said ball and socket joint, said means for applying compressive force to said rod is a collar screwed on to the socket over said ball.
Claim 5
Dependent Claim
222 words
An adjustable arm comprising an intermediate arm section and a pair of end arm sections disposed one at each end of the intermediate section, a joint connecting each end section to the respective end of the intermediate section for angular movement therebetween about at least one axis, each joint having a first part attached to the intermediate section and a second part attached to the respective end section, a push rod extending axially along the intermediate section with the respective ends of the push rod located against said second parts of the joints, and means for effecting relative movement between the intermediate section and the push rod between a first position in which the ends of the push rod are in sliding engagement with the respective second parts of the joints and a second position in which the ends of the rods are in frictional engagement with respect to said second parts, one of said joints comprising a knuckle joint and the other of said joints comprising a ball and socket joint, one end of said rod bearing against the eye of said knuckle joint and the other end of said rod being against the socket of said ball and socket joint, said means for applying compressive force to said rod is a collar screwed on to the socket over said ball.
Claim 6
Dependent Claim
23 words
An adjustable arm as claimed in claim 3 wherein the intermediate arm section is tubular and the push rod is slidably mounted therein.
Claim 7
Dependent Claim
29 words
An adjustable arm as claimed in claim 3 wherein part of one of the joints forms a base through which the arm may be mounted on a suitable base.
Claim 8
Dependent Claim
49 words
An adjustable arm as claimed in claim 3 wherein the ball has an enlarged bore therein larger in diameter than the rod and the rod is operably engaged with a cylindrical portion contained with the bore and adapted to engage the socket upon the application of a compressive force.
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) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |