Patent EP0420688A2 successfully refreshed from Google Patents.
Patent US7040831B2 successfully refreshed from Google Patents.
US7040831B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boom positioning mechanism
Assignee: Individual
•
Filing: 2002-12-20
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Granted: 2006-05-09
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Expires: 2022-12-20
Abstract
Abstract An improved design of positioning mechanism, mountable to an upright, allows smooth, readily accomplished adjustment of the angular, rotational and translational positions of a boom with respect to the upright. A hub is mounted to and rotatable with respect to a base. A friction plate between the base and the hub applies frictional forces that are established by the mechanism, by urging the hub and base together. A pressure sleeve partially contained in a matching opening in the hub controls the rotational and longitudinal movement of the boom with respect to the hub. The design of the frictional engagement surfaces allows adjustment of the resistance to movement of the boom in the angular, rotational and translational directions to extend smoothly and predictably from a condition of virtually no resistance to a completely locked and rigid condition.
Inventors
- 👤 Walter Rapaport
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:06
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/12; F16C11/10; F16C11/103; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32262; Y10T403/32319
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
77 words
A mechanism for securely and adjustably retaining a boom in any selectable angular, rotational and translational positions in relation to a support, comprising, in operative combination: a friction sleeve generally enclosing at least a portion of the boom, a base, mountable to the support; a hub, rotatably mounted to the base, having a recess that encloses at least a portion of the friction sleeve within the hub and; means for urging the base and the hub together.
Claim 2
Dependent Claim
77 words
A mechanism for securely and adjustably retaining a boom in any selectable angular, rotational and translational positions in relation to a support, comprising, in operative combination: a friction sleeve generally enclosing at least a portion of the boom, a base, mountable to the support; a hub, rotatably mounted to the base, having a recess that encloses at least a portion of the friction sleeve within the hub and; means for urging the base and the hub together.
Claim 3
Dependent Claim
42 words
The mechanism of claim 1 , wherein the friction sleeve has interior dimensions such that it will slidably fit over the boom and has exterior dimensions such that at least part of the sleeve will fit into the recess in the hub.
Claim 4
Dependent Claim
18 words
The mechanism of claim 1 , further comprising a friction plate, located between the hub and the base.
Claim 5
Dependent Claim
53 words
The mechanism of claim 1 , wherein: the friction sleeve has interior dimensions such that it will slidably fit over the boom and has exterior dimensions such that at least part of the sleeve will fit into the recess in the hub, and; a friction plate located between the hub and the base.
Claim 6
Dependent Claim
32 words
The mechanism of claim 4 , further comprising a pressure pad, retained in the hub and disposed to contact the friction plate generally opposite the point of contact of the friction sleeve.
Claim 7
Dependent Claim
75 words
The mechanism of claim 4 , wherein the means for urging the base and the hub together further comprises: a threaded shaft extending through the hub, the base, and the friction plate, and rotatably engaging the base; engagement means cooperating with the threaded shaft and engaging with the hub and with the base such that rotating the threaded shaft in a selected direction causes the hub and the base to be urged toward each other.
Claim 8
Dependent Claim
28 words
The mechanism of claim 2 , wherein the friction sleeve has an exterior shape that is in part eccentric with respect to the longitudinal axis of the boom.
Claim 9
Dependent Claim
106 words
A mechanism for securely and adjustably retaining a boom in any selectable angular, rotational and translational positions in relation to a support, comprising, in operative combination: a friction sleeve generally enclosing at least a portion of the boom, a base, mountable to the support; a hub, rotatably mounted to the base, having a recess that encloses at least a portion of the friction sleeve within the hub, and; a threaded shaft extending through the base, and rotatably engaging the base, and engaging the threaded bore of the hub, such that rotating the threaded shaft causes the hub and the base to be urged toward each other.
Claim 10
Dependent Claim
106 words
A mechanism for securely and adjustably retaining a boom in any selectable angular, rotational and translational positions in relation to a support, comprising, in operative combination: a friction sleeve generally enclosing at least a portion of the boom, a base, mountable to the support; a hub, rotatably mounted to the base, having a recess that encloses at least a portion of the friction sleeve within the hub, and; a threaded shaft extending through the base, and rotatably engaging the base, and engaging the threaded bore of the hub, such that rotating the threaded shaft causes the hub and the base to be urged toward each other.
Claim 11
Dependent Claim
42 words
The mechanism of claim 8 , wherein the friction sleeve has interior dimensions such that it will slidably fit over the boom and has exterior dimensions such that at least part of the sleeve will fit into the recess in the hub.
Claim 12
Dependent Claim
18 words
The mechanism of claim 8 , further comprising a friction plate, located between the hub and the base.
Claim 13
Dependent Claim
95 words
The mechanism of claim 8 , wherein the friction sleeve has interior dimensions such that it will slidably fit over the boom and has exterior dimensions such that at least part of the sleeve will fit into the recess in the hub, and further comprising a pressure pad, retained in the hub and placed such that the pressure pad contacts the friction plate generally opposite the point of contact of the friction sleeve as the hub and the base are urged toward each other, and a friction plate, located between the hub and the base.
Claim 14
Dependent Claim
28 words
The mechanism of claim 11 , wherein the friction sleeve has an exterior shape that is in part eccentric with respect to the longitudinal axis of the boom.
Claim 15
Dependent Claim
25 words
The mechanism of claim 9 , wherein the threaded shaft is the axis of rotation for rotation of the hub with respect to the base.
Claim 16
Dependent Claim
25 words
The mechanism of claim 10 , wherein the threaded shaft is the axis of rotation for rotation of the hub with respect to the base.
Claim 17
Dependent Claim
25 words
The mechanism of claim 11 , wherein the threaded shaft is the axis of rotation for rotation of the hub with respect to the base.
Claim 18
Dependent Claim
25 words
The mechanism of claim 12 , wherein the threaded shaft is the axis of rotation for rotation of the hub with respect to the base.
Claim 19
Dependent Claim
22 words
The mechanism of claim 8 , further comprising means for impeding the rotational freedom of the shaft with respect to the base.
Claim 20
Dependent Claim
22 words
The mechanism of claim 9 , further comprising means for impeding the rotational freedom of the shaft with respect to the base.
Claim 21
Dependent Claim
22 words
The mechanism of claim 10 , further comprising means for impeding the rotational freedom of the shaft with respect to the base.
Claim 22
Dependent Claim
22 words
The mechanism of claim 11 , further comprising means for impeding the rotational freedom of the shaft with respect to the base.
Claim 23
Dependent Claim
22 words
The mechanism of claim 12 , further comprising means for impeding the rotational freedom of the shaft with respect to the base.
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) | 2009-05-08 | 2009-11-07 | 2010-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-05-08 | 2013-11-07 | 2014-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-05-08 | 2017-11-07 | 2018-05-09 | $7700.00 | Window Closed / Lapsed |