Patent US2445228A successfully refreshed from Google Patents.
Patent US3912224A successfully refreshed from Google Patents.
US3912224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring compressor
Assignee: BRANICK INDUSTRIES Inc 2600 3RD AVE N FARGO ND 58107 A ND CORP
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Filing: 1974-08-08
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Granted: 1975-10-14
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Expires: 1994-08-08
Abstract
Abstract A spring compressor is disclosed herein for axially compressing a coil spring such as the coil spring in the wheel suspension mechanism of a road vehicle. The spring compressor includes two pairs of jaws, each pair of jaws being laterally adjustable and pivoted at one end to a pivot element, and adapted at the other end thereof to engage opposite sides of a coil spring at an axially spaced distance, determined by the distance between the pairs of jaws. An actuating mechanism is provided between the pairs of jaws to actuate the jaws toward each other.
Inventors
- 👤 John H Castoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:55
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/14; B25B27/30; B25B27/302; B25B27/304; B60; B60G; B60G2206/00; B60G2206/01; B60G2206/90; B60G2206/92; B60G2206/921
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
265 words
A spring compressor for axially compressing a coil spring comprising: a pivot element; a first pair of jaws pivotally mounted to said pivot element and adapted to radially span the coils of the spring; a second pair of jaws pivotally mounted to said pivot element and adapted to radially span the coils of the spring; said jaws of each pair of said jaws being axially spaced apart in the direction of the axis of said pivot thereof and being independently pivotally mounted to said pivot element; spring coil engaging means on each of said jaws respectively adapted to engage opposite side portions of coils of the spring in a direction axial to the spring; force exerting means interconnecting said first and said second pairs of jaws and adapted to urge said first pair of jaws and said second pair of jaws towards each other about said pivot element so that when said spring coil engaging means are in engagement with coils of the spring the portion of the spring between said engaging means of said respective pairs of jaws will be compressed; and said force exerting means comprising a first yoke pivotally interconnecting said jaws of said first pair of jaws, a second yoke pivotally interconnecting said jaws of said second pair of jaws, and a drive mechanism interconnecting said yokes for urging said jaws together, whereby said jaws will independently engage coils of the spring through said respective coil engaging means thereof to independently accomodate variances in the configuration of the spring as said pairs of jaws are drawn together to compress the spring.
Claim 2
Dependent Claim
265 words
A spring compressor for axially compressing a coil spring comprising: a pivot element; a first pair of jaws pivotally mounted to said pivot element and adapted to radially span the coils of the spring; a second pair of jaws pivotally mounted to said pivot element and adapted to radially span the coils of the spring; said jaws of each pair of said jaws being axially spaced apart in the direction of the axis of said pivot thereof and being independently pivotally mounted to said pivot element; spring coil engaging means on each of said jaws respectively adapted to engage opposite side portions of coils of the spring in a direction axial to the spring; force exerting means interconnecting said first and said second pairs of jaws and adapted to urge said first pair of jaws and said second pair of jaws towards each other about said pivot element so that when said spring coil engaging means are in engagement with coils of the spring the portion of the spring between said engaging means of said respective pairs of jaws will be compressed; and said force exerting means comprising a first yoke pivotally interconnecting said jaws of said first pair of jaws, a second yoke pivotally interconnecting said jaws of said second pair of jaws, and a drive mechanism interconnecting said yokes for urging said jaws together, whereby said jaws will independently engage coils of the spring through said respective coil engaging means thereof to independently accomodate variances in the configuration of the spring as said pairs of jaws are drawn together to compress the spring.
Claim 3
Dependent Claim
113 words
A spring compressor for axially compressing a coil spring as defined in claim 1 wherein said jaws of said first pair of jaws are adapted to slidably receive said yoke therein and between said jaws, said jaws of said second pair of jaws are adapted to slidably receive said yoke therein and between said jaws, and bias means is provided between said jaws and the respective yokes thereof for normally urging said jaws of each pair of jaws apart on said yoke, whereby said jaws may be selectively urged against said bias adjustment of the distance therebetween to allow said spring engaging means thereof to be adjusted to accommodate various diameters of springs.
Claim 4
Dependent Claim
92 words
A spring compressor for axially compressing a coil spring as defined in claim 2 wherein said pivot element comprises a U-shaped channel frame with a first pivot pin extending between the sides of said channel adapted to support said first jaws radially pivotable and axially movable thereon between said channel sides, a second pivot pin extending between the sides of said channel adapted to support said second jaws radially pivotal and axially movable thereon between said channel sides, whereby said jaws are independently pivotable and axially adjustably positionable on said pivot element.
Claim 5
Dependent Claim
72 words
A spring compressor for axially compressing a coil spring as defined in claim 3 wherein bias means is provided between said jaws of said pairs of jaws for normally urging said jaws of each pair of jaws axially apart on said respective pins and against said channel sides, whereby said jaws may be urged inwardly from said sides to adjustably position the axial pivotal position of said jaws on said pivot element.
Claim 6
Dependent Claim
101 words
A spring compressor for axially compressing a coil spring as defined in claim 1 wherein said drive mechanism comprises an apertured portion in said first yoke, a screw rotatably inserted in said yoke aperture in said first yoke with the head of said screw engageable with said first yoke, a threaded aperture portion in said second yoke, said screw being threadably mounted in said thread portion of said second yoke, whereby when said screw is tightened said first yoke and first jaws will be urged toward said second yoke and said second jaws to provide said force exertion for spring compression.
Claim 7
Dependent Claim
116 words
A spring compressor for axially compressing a coil spring as defined in claim 1 wherein said drive mechanism comprises apertured portions in said first and second yokes, a shaft slidably inserted through both said yoke apertures, said shaft being adapted beyond first yoke to engage said first yoke and urge said first yoke toward said second yoke when said shaft is moved toward said first yoke, means for limiting movement of said second yoke away from said first yoke, and means for urging said shaft in said aperture in said second yoke for drawing said first yoke toward said second yoke, whereby said first yoke can be urged toward said second yoke for said compression action.
Claim 8
Dependent Claim
182 words
A spring compressor for axially compressing a coil spring comprising: a pivot element; a first pair of jaws pivotally mounted to said pivot element and adapted to radially span the coils of the spring; a second pair of jaws pivotally mounted to said pivot element and adapted to radially span the coils of the spring; spring coil engaging means on each of said jaws respectively adapted to engage opposite side portions of coils of the spring in a direction axial to the spring; said spring coil engaging means comprising hooks pivotally attached to said first and said second pairs of jaws, said hooks having an open side to engage the coils of the spring; and force exerting means interconnecting said first and said second pairs of jaws and adapted to urge said first pair of jaws and said second pair of jaws Toward each other about said pivot element whereby when said spring coil engaging means are in engagement with coils of the spring, the portion of the spring between said engaging means of said respective pairs of jaws will be compressed.
Claim 9
Dependent Claim
182 words
A spring compressor for axially compressing a coil spring comprising: a pivot element; a first pair of jaws pivotally mounted to said pivot element and adapted to radially span the coils of the spring; a second pair of jaws pivotally mounted to said pivot element and adapted to radially span the coils of the spring; spring coil engaging means on each of said jaws respectively adapted to engage opposite side portions of coils of the spring in a direction axial to the spring; said spring coil engaging means comprising hooks pivotally attached to said first and said second pairs of jaws, said hooks having an open side to engage the coils of the spring; and force exerting means interconnecting said first and said second pairs of jaws and adapted to urge said first pair of jaws and said second pair of jaws Toward each other about said pivot element whereby when said spring coil engaging means are in engagement with coils of the spring, the portion of the spring between said engaging means of said respective pairs of jaws will be compressed.
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) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |