Patent US3666220A successfully refreshed from Google Patents.
US3666220A
Expired / Lapsed
US
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Adjustable retainable tool balancer
Assignee: Clevite Industries Inc
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Filing: 1970-06-25
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Granted: 1972-05-30
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Expires: 1990-06-25
Abstract
Abstract A tool balancer having means for adjustably retaining a tool in any one of a plurality of vertically related positions. The balancer includes means for powering the tool.
Inventors
- 👤 Thomas F Rider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:11
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/34; B65H75/38; B65H75/44; B65H75/48; B23; B23Q; B23Q1/00; B23Q1/0009; B23Q1/0018; B23Q1/0027; B25; B25H; B25H1/00; B25H1/0021; B25H1/0028; B60; B60G; B60G2204/00; B60G2204/40; B60G2204/45; B60G2204/4504
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
89 words
A tool balancer comprising: a support means; extensible constant force spring means carried by said support means and having means for exerting an upward support force; and coiled spring means extending from said support for carrying and powering a tool in said positions and exerting a variable upward support force for augmenting the upward support force of said constant force spring means, said support forces being preselected to cumulatively vertically adjustably carry the tool to remain in any one of a plurality of vertically related positions when positioned thereat.
Claim 2
Dependent Claim
89 words
A tool balancer comprising: a support means; extensible constant force spring means carried by said support means and having means for exerting an upward support force; and coiled spring means extending from said support for carrying and powering a tool in said positions and exerting a variable upward support force for augmenting the upward support force of said constant force spring means, said support forces being preselected to cumulatively vertically adjustably carry the tool to remain in any one of a plurality of vertically related positions when positioned thereat.
Claim 3
Dependent Claim
26 words
The tool balancer of claim 1 wherein said constant force spring means comprises coiled spring means supported by said support means to have a horizontal axis.
Claim 4
Dependent Claim
25 words
The tool balancer of claim 1 wherein said constant force spring means is preselected to support any one of a plurality of different weight tools.
Claim 5
Dependent Claim
84 words
A tool balancer comprising a support means; extensible means carried by said support means and having means for exerting an upward support force; and coiled spring means extending from said support for carrying and powering a tool in said positions and exerting a variable upward support force for augmenting the upward support force of said extensible means, said support forces being preselected to cumulatively vertically adjustably carry the tool to remain in any one of a plurality of vertically related positions when positioned thereat.
Claim 6
Dependent Claim
84 words
A tool balancer comprising a support means; extensible means carried by said support means and having means for exerting an upward support force; and coiled spring means extending from said support for carrying and powering a tool in said positions and exerting a variable upward support force for augmenting the upward support force of said extensible means, said support forces being preselected to cumulatively vertically adjustably carry the tool to remain in any one of a plurality of vertically related positions when positioned thereat.
Claim 7
Dependent Claim
17 words
The tool balancer of claim 4 wherein said coiled spring means comprises a helically coiled retractable element.
Claim 8
Dependent Claim
22 words
The tool balancer of claim 5 wherein said retractable element comprises a tube for conducting fluid to power a fluid operated tool.
Claim 9
Dependent Claim
28 words
The tool balancer of claim 1 wherein said constant force spring means comprises a pair of constant force coil springs connected in tandem for jointly carrying the tool.
Claim 10
Dependent Claim
15 words
The tool balancer of claim 7 wherein said constant force coil springs are disposed back-to-back.
Claim 11
Dependent Claim
18 words
The tool balancer of claim 4 further including means for connecting said support means to an elevated mount.
Claim 12
Dependent Claim
45 words
The tool balancer of claim 1 wherein said spring means are constructed to cumulatively support adjustably any one of a plurality of tools having different weights ranging from a preselected minimum to a maximum weight at least approximately 50 percent greater than said minimum weight.
Claim 13
Dependent Claim
50 words
The tool balancer of claim 4 wherein said means extending from said support means comprises a fluid flow duct, and said support means comprises a carrier having means for movably mounting said extensible means and means for connecting said duct to a source of pressurized fluid for operating the tool.
Claim 14
Dependent Claim
44 words
The tool balancer of claim 1 wherein said support means comprises means for selectively supporting any one of a plurality of different constant force extensible spring means having different strengths thereby to provide selectively different range of weight carrying abilities of said tool balancer.
Claim 15
Dependent Claim
19 words
The tool balancer of claim 1 wherein said constant force spring means comprises a plurality of constant force springs.
Claim 16
Dependent Claim
34 words
The tool balancer of claim 1 wherein said constant force spring means comprises a pair of constant force coil springs connected in tandem for jointly carrying the tool, said coil springs having different strengths.
Claim 17
Dependent Claim
30 words
The tool balancer of claim 4 further including a weight selectively removably carried by the extensible means for extending the range of tool weights to be balanced by said balancer.
Claim 18
Dependent Claim
21 words
The tool balancer of claim 1 wherein each of said spring means has an extension of at least approximately 6 feet.
Claim 19
Dependent Claim
20 words
The tool balancer of claim 4 wherein said means for powering the tool includes a plurality of power conducting means.
Claim 20
Dependent Claim
32 words
The tool balancer of claim 4 wherein said means for powering the tool includes a plurality of power conducting means including conducting means for deliverying and returning powering means for the tool.
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |