Patent US3877274A successfully refreshed from Google Patents.
US3877274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque meter
Assignee: REEL PRECISION Manufacturing CORP
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Filing: 1974-03-25
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Granted: 1975-04-15
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Expires: 1994-03-25
Abstract
Abstract A spring-loaded torque meter incorporating a releasable one-way clutch and torque indicator.
Inventors
- 👤 Robert L Wahlstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:45
CPC Classifications
G; G01; G01L; G01L3/00; G01L3/02; G01L3/14; G01L3/1407
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
107 words
A device adapted to serve as a torque meter, comprising, in combination: driving means for connection to a source of power; driven means for connection to a load whose resistance to torque is to be measured; said driving and driven means being in axial alignment and including axially adjacent cylindrical surfaces of identical diameter; deflectable coil spring means connecting said driving and driven means for establishing a measurable deflection dependent on said load; releasable lock means, comprising a spiral spring overlying said surfaces and fixed at one end to one of said surfaces, for maintaining said deflection; and readout means for determining the extent of said deflection.
Claim 2
Independent Claim
107 words
A device adapted to serve as a torque meter, comprising, in combination: driving means for connection to a source of power; driven means for connection to a load whose resistance to torque is to be measured; said driving and driven means being in axial alignment and including axially adjacent cylindrical surfaces of identical diameter; deflectable coil spring means connecting said driving and driven means for establishing a measurable deflection dependent on said load; releasable lock means, comprising a spiral spring overlying said surfaces and fixed at one end to one of said surfaces, for maintaining said deflection; and readout means for determining the extent of said deflection.
Claim 3
Dependent Claim
20 words
Device of claim 1 wherein said spiral spring has a free end serving as a component of said readout means.
Claim 4
Dependent Claim
23 words
Device of claim 2 including a rotatable tubular cover loosely fitting about said spiral spring and slotted to receive said free end thereof.
Claim 5
Dependent Claim
101 words
A torque meter adapted for determining maximum torque under steady state dynamic conditions, comprising: coaxial drive means for connection to a source of power and driven means for connection to a load whose resistance to torque is to be measured; deflectable spring means connecting said drive and driven means for establishing a measurable angular deflection therebetween dependent on said load; lock means for releasably maintaining said deflection; and readout means for determining the extent of said deflection; and wherein said lock means comprises an expandable spiral spring overlying axially adjacent cylindrical surfaces carried by said drive means and said driven means.
Claim 6
Dependent Claim
101 words
A torque meter adapted for determining maximum torque under steady state dynamic conditions, comprising: coaxial drive means for connection to a source of power and driven means for connection to a load whose resistance to torque is to be measured; deflectable spring means connecting said drive and driven means for establishing a measurable angular deflection therebetween dependent on said load; lock means for releasably maintaining said deflection; and readout means for determining the extent of said deflection; and wherein said lock means comprises an expandable spiral spring overlying axially adjacent cylindrical surfaces carried by said drive means and said driven means.
Claim 7
Dependent Claim
112 words
A torque meter adapted for determining maximum torque under steady state dynamic conditions, comprising; coaxial drive means for connection to a source of power and driven means for connection to a load whose resistance to torque is to be measured; deflectable spring means connecting said drive and driven means for establishing a measurable angular deflection therebetween dependent on said load; overrunning clutch means coaxial with said drive and driven means, affixed to one of said means and disposed in freely rotating relationship with the other of said means; lock means carried by said other means for releasably locking said clutch means thereto; and readout means for determining the extent of said deflection.
Claim 8
Dependent Claim
112 words
A torque meter adapted for determining maximum torque under steady state dynamic conditions, comprising; coaxial drive means for connection to a source of power and driven means for connection to a load whose resistance to torque is to be measured; deflectable spring means connecting said drive and driven means for establishing a measurable angular deflection therebetween dependent on said load; overrunning clutch means coaxial with said drive and driven means, affixed to one of said means and disposed in freely rotating relationship with the other of said means; lock means carried by said other means for releasably locking said clutch means thereto; and readout means for determining the extent of said deflection.
Claim 9
Dependent Claim
20 words
Meter of claim 5 wherein said clutch means is affixed to an inner sleeve and disposed within an outer cylinder.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |