US3757906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical adjusting arrangement
Assignee: Individual
•
Filing: 1970-12-21
•
Granted: 1973-09-11
•
Expires: 1990-12-21
Abstract
Abstract Mechanical adjusting arrangement, in particular for braking members in motor vehicles, which are operated by means of a selfbraking or non-reversible outer thread set or a pair of cooperating curved cam elements corresponding thereto for adjusting an abutment, there being a reversible central and coaxial inner thread set or curved pair of elements, one thread of each of the two thread sets being disposed upon the same rotatable spindle, the two thread sets having the same lead and being of the same hand. The outer thread set also serves to support the rotatable spindle; the inner, central thread set is freely mounted and is used to drive the rotatable spindle. In the disclosed embodiment the outer thread set is composed of a thread on a brake-operating piston mounted for axial reciprocation and held from rotation about its longitudinal axis, the other thread of such set being that on the outer surface of the adjusting spindle.
Inventors
- 👤 K Baezold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:59
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/228; F16D65/00; F16D65/38; F16D65/40; F16D65/52; F16D65/56; F16D65/567; F16D2125/00; F16D2125/18; F16D2125/58; F16D2125/64
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
145 words
A mechanical arrangement for adjusting an abutment means for a longitudinally reciprocable member, said member having first and second surfaces of substantially different diameter coaxial of the axis of reciprocation of the member, an abutment adjusting spindle having third and fourth surfaces confronting the said first and second surfaces, respectively, a first helical guide set formed by cooperating confronting guides on the first and third surfaces, and a second helical guide set formed by cooperating confronting guides on the second and fourth surfaces, the first helical guide set constituting said abutment means and being irreversible under longitudinally directed forces, and the second helical guide set being reversible under longitudinally directed forces, whereby longitudinal movement of the member in excess of that taking up the play in the second guide set rotatEs the spindle to change the engagement between the guides of the first guide set.
Claim 2
Dependent Claim
145 words
A mechanical arrangement for adjusting an abutment means for a longitudinally reciprocable member, said member having first and second surfaces of substantially different diameter coaxial of the axis of reciprocation of the member, an abutment adjusting spindle having third and fourth surfaces confronting the said first and second surfaces, respectively, a first helical guide set formed by cooperating confronting guides on the first and third surfaces, and a second helical guide set formed by cooperating confronting guides on the second and fourth surfaces, the first helical guide set constituting said abutment means and being irreversible under longitudinally directed forces, and the second helical guide set being reversible under longitudinally directed forces, whereby longitudinal movement of the member in excess of that taking up the play in the second guide set rotatEs the spindle to change the engagement between the guides of the first guide set.
Claim 3
Dependent Claim
21 words
An arrangement according to claim 1, wherein the helical guide sets have the same lead and are of the same hand.
Claim 4
Dependent Claim
17 words
An arrangement according to claim 1, wherein the helical guide sets are composed of interengaging cooperating threads.
Claim 5
Dependent Claim
99 words
An arrangement according to claim 1, wherein the reciprocable member has a main body in the form of a first cup, and comprising a central drive spindle fixedly secured to said main body coaxial thereof, and wherein the adjusting spindle is in the form of a second cup which is coaxial of the first cup and is reversely positioned longitudinally from the first cup, the guides forming the first and second helical guide sets being disposed on the confronting walls of the two cups, and on the inner wall of the second cup and the central drive spindle, respectively.
Claim 6
Dependent Claim
20 words
An arrangement according to claim 1, comprising means independently to adjust said abutment means by turning said abutment adjusting spindle.
Claim 7
Dependent Claim
25 words
An arrangement according to claim 5, wherein said independent adjusting means comprises a central shaft connected to and extending axially from the abutment adjusting spindle.
Claim 8
Dependent Claim
51 words
An arrangement according to claim 4, wherein said independent adjusting means comprises a central shaft connected to and extending axially from the closed end of the second cup forming the body of the abutment adjusting spindle, and means on said shaft whereby it and the adjusting spindle may be turned manually.
Claim 9
Dependent Claim
30 words
An arrangement according to claim 7, comprising a fixed housing enclosing said arrangement, said housing having a transverse wall through which said shaft extends and in which it is journalled.
Claim 10
Dependent Claim
35 words
An arrangement according to claim 1, comprising yieldable means constantly urging the reciprocable member in one axial direction, and means which overcomes the yieldable means to thrust the reciprocable member in the opposite axial direction.
Claim 11
Dependent Claim
55 words
An arrangement according to claim 9, comprising a fixed housing enclosing the arrangement, a cylinder within the housing, the reciprocable member being a piston mounted in said cylinder, and means selectively to conduct fluid under pressure to the space rearwardly of the piston in the cylinder to thrust the piston in said opposite axial direction.
Claim 12
Dependent Claim
32 words
An arrangement according to claim 1, comprising a rotatable braking element, and a brake shoe mounted on the reciprocable member and selectively thrust thereby into operative braking engagement with the braking element.
Claim 13
Dependent Claim
44 words
A mechanical adjusting arrangement according to claim 1, wherein the locking and support directions of the first helical guide set can be changed as needed by means of a rotational movement of one of the elements carrying at least one of said helical guides.
Claim 14
Dependent Claim
29 words
A mechanical adjusting arrangement according to claim 12, comprising means connected to said abutment adjusting spindle whereby it may be rotated manually to change said locking and support directions.
References Cited (Backward Citations)
US2949173A
Cited
US3244260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |