US3556266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Caliper brake
Assignee: Stearns Electric Corp
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Filing: 1968-10-31
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Granted: 1971-01-19
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Expires: 1988-10-31
Abstract
Abstract Guide bolts support one or more brake plates and also support pressure springs which bias the plates toward each other and into engagement with one or more intervening brake discs. The guide bolts connect to a solenoid frame which provides a flux path and is centered between the bolts to support the winding and to guide an armature which is centered in the plane of the bolts and attached centrally to the first of the caliper brake plates for the retraction thereof against the bias of the springs when the solenoid is energized, whereby energization of the solenoid is energized, whereby energization of the solenoid releases the brake. A second like unit used in a diametrically opposite location provides a balanced supplement to the braking action of the first unit.
Inventors
- 👤 Richard H Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:59
CPC Classifications
F; F16; F16D; F16D59/00; F16D59/02; F16D55/00; F16D55/24; F16D55/26; F16D55/28; H; H02; H02K; H02K7/00; H02K7/10; H02K7/102; H02K7/1021; H02K7/1023; F16D2055/0004; F16D2055/0062; F16D2121/00; F16D2121/18; F16D2121/20; F16D2121/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
136 words
A caliper brake unit for retarding rotation of a rotatable disc said unit comprising a pair of narrow brake plates for engaging opposite faces of such a disc on a minor chord thereof, a solenoid winding having an armature connected centrally with one of said brake plates, a fixed mounting comprising a frame of magnetic material supporting the winding and provided with axially projecting guide members along which the ends of the last mentioned brake plate are reciprocable, said guide members being attached to the other of said brake plates for the support thereof from said frame, and spring means extending along the guide members and bearing on the ends of the brake plate guided thereon for biasing said last mentioned brake plate toward said other brAke plate, subject to retraction when the solenoid is energized.
Claim 2
Dependent Claim
136 words
A caliper brake unit for retarding rotation of a rotatable disc said unit comprising a pair of narrow brake plates for engaging opposite faces of such a disc on a minor chord thereof, a solenoid winding having an armature connected centrally with one of said brake plates, a fixed mounting comprising a frame of magnetic material supporting the winding and provided with axially projecting guide members along which the ends of the last mentioned brake plate are reciprocable, said guide members being attached to the other of said brake plates for the support thereof from said frame, and spring means extending along the guide members and bearing on the ends of the brake plate guided thereon for biasing said last mentioned brake plate toward said other brAke plate, subject to retraction when the solenoid is energized.
Claim 3
Dependent Claim
77 words
A caliper brake according to claim 1 in which said frame has a rear frame plate provided with wings extending laterally and with which said guide members are connected, said rear frame plate having a forwardly extending fore-and-aft frame plate integrally connected therewith and a downwardly extending forward frame plate integrally connected with the fore-and-aft frame plate and provided with an aperture through which said armature is connected with the brake plate guided on said guide member.
Claim 4
Dependent Claim
45 words
A caliper brake according to claim 1 in which said guide members comprise bolts having shoulders at their rear ends which constitute seats for the springs which bias the brake plate guided on said guide members, the said bolts being substantially coplanar with said armature.
Claim 5
Dependent Claim
138 words
The combination with a rotatable shaft having a brake disc thereon, of a brake unit comprising straplike brake plates disposed to engage opposite sides of the disc on a minor chord of said disc guide means supporting one of said brake plates in relatively fixed position, means guiding the other of said brake plates for movement toward said one brake plate to clamp face portions of the disc between the brake plates, a solenoid having a magnetically conductive frame with which said guide means has fixed connection, said solenoid having an armature centered between said guide means and connected with the brake plate guided thereby, spring means extending along the respective guide means and engaged with opposite ends of said last mentioned brake plate for biasing said brake plate in a direction to apply friction to said disc.
Claim 6
Dependent Claim
138 words
The combination with a rotatable shaft having a brake disc thereon, of a brake unit comprising straplike brake plates disposed to engage opposite sides of the disc on a minor chord of said disc guide means supporting one of said brake plates in relatively fixed position, means guiding the other of said brake plates for movement toward said one brake plate to clamp face portions of the disc between the brake plates, a solenoid having a magnetically conductive frame with which said guide means has fixed connection, said solenoid having an armature centered between said guide means and connected with the brake plate guided thereby, spring means extending along the respective guide means and engaged with opposite ends of said last mentioned brake plate for biasing said brake plate in a direction to apply friction to said disc.
Claim 7
Dependent Claim
78 words
A caliper brake according to claim 4 in further combination with a duplicate brake unit including brake plates engageable with a different minor chord of the disc angularly offset from the brake plates of the brake unit first mentioned, said brake plates of said second unit having their own positioning and guiding means and their own solenoid and solenoid frame as a unit independent of the corresponding parts of the unit first mentioned but in balanced relation thereto.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |