US3882604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spline measuring unit
Assignee: Zero Gage Co
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Filing: 1973-03-07
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Granted: 1975-05-13
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Expires: 1993-03-07
Abstract
Abstract For measuring the accuracy of either an internal or external spline, this spline measuring unit has two coaxial sphericalended pins mounted in a gauge unit head, one pin being fixed and the other pin being reciprocable transversely to the axis of a stem. In the internal spline gauge the pins have their spherical ends pointing away from one another and operatively connected through transverse-to-longitudinal motion-converting mechanism to a conventional dial indicator, which shows on a graduated circular dial the amount of motion of the movable pin. In the external spline gauge, the fixed and movable measuring pins have their spherical ends pointing toward one another. Each such unit is so constructed as to measure a predetermined range of spline sizes. A set of such units, each constructed to measure a different range of sizes of splines, and having the same stem sizes to fit the same dial indicator holder socket, covers all sizes of splines within the desired range.
Inventors
- 👤 Bruce A Macklyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:29
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/22; G01B3/26; G01B3/24; Y; Y10; Y10S; Y10S33/00; Y10S33/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
228 words
A spline or broach diameter measuring unit adapted for insertion in the socket of a conventional dial indicator gauge holder containing a dial indicator with a reciprocable operating plunger and a reciprocable rearward motion-transmitting member operatively engageable with said plunger, said unit comprising a hollow stem having a rearward portion configured to fit said socket and having a longItudinal bore therein, a laterally-enlarged head structure on the forward end of said stem having a transverse bore therein communicating with said longitudinal bore, a fixed measuring member stationarily mounted on said head coaxial with said transverse bore, a movable measuring member slidably mounted in said transverse bore for motion toward and away from said fixed measuring member, a forward motion-transmitting device slidably mounted in said longitudinal bore and adapted to operatively engage the rearward motion-transmitting member of the dial indicator gauge holder, and motion-converting mechanism operatively connecting said movable measuring member to said forward motion-transmitting device and adapted to convert transverse motion of said movable measuring member into longitudinal motion of said forward motion-transmitting device, said transverse measuring members having substantially hemispherical tips adapted to engage the inclined side surfaces of the spline grooves, said measuring members having body portions disposed within said head structure and having tapered clearance portions cut away to avoid contact thereof with the spline and connecting said body portions to said substantially hemispherical tips.
Claim 2
Dependent Claim
228 words
A spline or broach diameter measuring unit adapted for insertion in the socket of a conventional dial indicator gauge holder containing a dial indicator with a reciprocable operating plunger and a reciprocable rearward motion-transmitting member operatively engageable with said plunger, said unit comprising a hollow stem having a rearward portion configured to fit said socket and having a longItudinal bore therein, a laterally-enlarged head structure on the forward end of said stem having a transverse bore therein communicating with said longitudinal bore, a fixed measuring member stationarily mounted on said head coaxial with said transverse bore, a movable measuring member slidably mounted in said transverse bore for motion toward and away from said fixed measuring member, a forward motion-transmitting device slidably mounted in said longitudinal bore and adapted to operatively engage the rearward motion-transmitting member of the dial indicator gauge holder, and motion-converting mechanism operatively connecting said movable measuring member to said forward motion-transmitting device and adapted to convert transverse motion of said movable measuring member into longitudinal motion of said forward motion-transmitting device, said transverse measuring members having substantially hemispherical tips adapted to engage the inclined side surfaces of the spline grooves, said measuring members having body portions disposed within said head structure and having tapered clearance portions cut away to avoid contact thereof with the spline and connecting said body portions to said substantially hemispherical tips.
Claim 3
Dependent Claim
226 words
A spline or broach diameter measuring unit adapted for insertion in the socket of a conventional dial indicator gauge holder containing a dial indicator with a reciprocable operating plunger and a reciprocable rearward motion-transmitting member operatively engageable with said plunger, said unit comprising a hollow stem having a rearward portion configured to fit said socket and having a longitudinal bore therein, a laterally-enlarged head structure on the forward end of said stem having a transverse bore therein communicating with said longitudinal bore, a fixed measuring member stationarily mounted on said head coaxial with said transverse bore, a movable measuring member slidably mounted in said transverse bore for motion toward and away from said fixed measuring member, a forward motion-transmitting device slidably mounted in said longitudinal bore and adapted to operatively engage the rearward motion-transmitting member of the dial indicator gauge holder, and motion-converting mechanism operatively connecting said movable measuring member to said forward motion-transmitting device and adapted to convert transverse motion of said movable measuring member into longitudinal motion of said forward motion-transmitting device, said transverse measuring members having substantially hemispherical tips adapted to engage the inclined side surfaces of the spline grooves, said head structure including an approximately L-shaped arm having an inner end portion secured to said hollow stem, said fixed measuring member being stationarily mounted on the outer end portion of said arm.
Claim 4
Dependent Claim
226 words
A spline or broach diameter measuring unit adapted for insertion in the socket of a conventional dial indicator gauge holder containing a dial indicator with a reciprocable operating plunger and a reciprocable rearward motion-transmitting member operatively engageable with said plunger, said unit comprising a hollow stem having a rearward portion configured to fit said socket and having a longitudinal bore therein, a laterally-enlarged head structure on the forward end of said stem having a transverse bore therein communicating with said longitudinal bore, a fixed measuring member stationarily mounted on said head coaxial with said transverse bore, a movable measuring member slidably mounted in said transverse bore for motion toward and away from said fixed measuring member, a forward motion-transmitting device slidably mounted in said longitudinal bore and adapted to operatively engage the rearward motion-transmitting member of the dial indicator gauge holder, and motion-converting mechanism operatively connecting said movable measuring member to said forward motion-transmitting device and adapted to convert transverse motion of said movable measuring member into longitudinal motion of said forward motion-transmitting device, said transverse measuring members having substantially hemispherical tips adapted to engage the inclined side surfaces of the spline grooves, said head structure including an approximately L-shaped arm having an inner end portion secured to said hollow stem, said fixed measuring member being stationarily mounted on the outer end portion of said arm.
Claim 5
Dependent Claim
65 words
A measuring unit, according to claim 2, wherein said stem has a reduced diameter forward portion with a shoulder disposed at the rearward end thereof, wherein said one end portion of said arm has a bore therethrough coaxial with said longitudinal bore of said stem and slidably receives said reduced diameter forward portion of said stem with said one end portion abuttingly engaging said shoulder.
Claim 6
Dependent Claim
86 words
A measuring unit, according to claim 2, wherein said head structure includes an approximately C-shaped body with said stem projecting substantially radially from the approximate mid-portion of said body and with a pair of arms extending outward in opposite directions away from said stem, wherein said fixed measuring member is stationarily mounted on the outer end portion of one of said arms, and wherein said transverse bore is disposed in the outer end portion of the other of said arms coaxial with said fixed measuring member.
Claim 7
Dependent Claim
373 words
A spline or spline broach diameter measuring unit adapted for insertion in the socket of a conventional dial indicator gauge holder containing a dial inDicator with a reciprocable operating plunger and a reciprocable rearward motion-transmitting member operatively engageable with said plunger, said unit comprising a hollow stem having a rearward portion configured to fit said socket and having a longitudinal bore therein, a laterally-enlarged head structure on the forward end of said stem having a transverse bore therein communicating with said longitudinal bore, a fixed measuring member stationarily mounted on said head coaxial with said transverse bore, a movable measuring member slidably mounted in said transverse bore for motion toward and away from said fixed measuring member, a forward motion-transmitting device slidably mounted in said longitudinal bore and adapted to operatively engage the rearward motion-transmitting member of the dial indicator gauge holder, and motion-converting mechanism operatively connecting said movable measuring member to said forward motion-transmitting device and adapted to convert transverse motion of said movable measuring member into longitudinal motion of said forward motion-transmitting device, said transverse measuring members having spherically-surfaced tips adapted to engage the inclined side surfaces of the spline grooves, said head structure including an approximately C-shaped body with a pair of arms extending outward in opposite directions away from said stem, said fixed measuring member being stationarily mounted on the outer end portion of one of said arms, said transverse bore being disposed in the outer end portion of the other of said arms coaxial with said fixed measuring member, said motion-transmitting device including a central motion-transmitting member slidably mounted in said longitudinal bore of said stem, said other arm having an outer bore in the outer end portion thereof disposed parallel to the axis of said longitudinal stem bore, a transverse passageway interconnecting said bores, said forward motion-transmitting device including a central motion-transmitting member slidably mounted in said longitudinal bore of said stem, said forward motion-transmitting device further including an intermediate motion-transmitting member fixedly secured to said central motion-transmitting member with its axis substantially perpendicular thereto, said forward motion-transmitting device still further including an outer motion-transmitting member with its rearward end abuttingly engaging said intermediate motion-transmitting member and with its forward end operatively connected to said motion-converting device.
Claim 8
Dependent Claim
373 words
A spline or spline broach diameter measuring unit adapted for insertion in the socket of a conventional dial indicator gauge holder containing a dial inDicator with a reciprocable operating plunger and a reciprocable rearward motion-transmitting member operatively engageable with said plunger, said unit comprising a hollow stem having a rearward portion configured to fit said socket and having a longitudinal bore therein, a laterally-enlarged head structure on the forward end of said stem having a transverse bore therein communicating with said longitudinal bore, a fixed measuring member stationarily mounted on said head coaxial with said transverse bore, a movable measuring member slidably mounted in said transverse bore for motion toward and away from said fixed measuring member, a forward motion-transmitting device slidably mounted in said longitudinal bore and adapted to operatively engage the rearward motion-transmitting member of the dial indicator gauge holder, and motion-converting mechanism operatively connecting said movable measuring member to said forward motion-transmitting device and adapted to convert transverse motion of said movable measuring member into longitudinal motion of said forward motion-transmitting device, said transverse measuring members having spherically-surfaced tips adapted to engage the inclined side surfaces of the spline grooves, said head structure including an approximately C-shaped body with a pair of arms extending outward in opposite directions away from said stem, said fixed measuring member being stationarily mounted on the outer end portion of one of said arms, said transverse bore being disposed in the outer end portion of the other of said arms coaxial with said fixed measuring member, said motion-transmitting device including a central motion-transmitting member slidably mounted in said longitudinal bore of said stem, said other arm having an outer bore in the outer end portion thereof disposed parallel to the axis of said longitudinal stem bore, a transverse passageway interconnecting said bores, said forward motion-transmitting device including a central motion-transmitting member slidably mounted in said longitudinal bore of said stem, said forward motion-transmitting device further including an intermediate motion-transmitting member fixedly secured to said central motion-transmitting member with its axis substantially perpendicular thereto, said forward motion-transmitting device still further including an outer motion-transmitting member with its rearward end abuttingly engaging said intermediate motion-transmitting member and with its forward end operatively connected to said motion-converting device.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |