hypoidadj.n.

Brit.

/ˈhʌɪpɔɪd/, U.S.

/ˈhaɪˌpɔɪd/

Etymology: Said to be a contraction of hyperboloid or of hyperbolic paraboloid (in reference to the shape of the teeth on the wheel).

Mechanics.

A. adj.

a. Applied to a kind of gear similar to a spiral bevel gear but having the pinion offset from the centre-line of the wheel, so that it can be used to connect shafts whose axes do not intersect; it is commonly employed in motor vehicles to transmit the power from the propeller shaft to the axle.

ΘΚΠ

society > occupation and work > equipment > machine > parts of machines > wheel > [adjective] > types of cogs or gears

sun-and-planet1796

spiral gearinga1877

chainless1897

planetary1904

epicyclic1906

hypoid1926

positraction1957

1926 Jrnl. Soc. Automotive Engin. June 575/1 Hypoid-gears are tapered gears having offset axes.

1935 Times 2 Oct. 6/5 The rear axle is fully-floating, and final drive is by hypoid spiral bevel gears.

1937 Jrnl. Applied Mech. 4 A-31 The behavior of lubricants in the region of boundary lubrication has become of added importance due to the recent adoption of hypoid gears in automobiles.

1941 F. D. Jones Engin. Encycl. I. 676 The chief advantages of hypoid gears are noiseless operation, increased load-carrying capacity, the possibility of high reduction and low numbers of teeth, long life, and high efficiency.

1969 K. Ball Rover 2000 1963–9 Autobook vii. 64/1 The unit contains a hypoid crownwheel and pinion for the final drive from the power input shaft to the half shafts.

b. Suitable for or employing a hypoid gear.

ΘΚΠ

society > occupation and work > equipment > machine > parts of machines > wheel > [adjective] > types of cogs or gears > employing

hypoid1937

1937 S.A.E. Trans. (Soc. Automotive Engineers) 32 557/2 Six or seven months ago the lubrication of hypoid axles in the field was a much more serious problem than it is today.

1937 S.A.E. Trans. (Soc. Automotive Engineers) 32 563/1 One lubricant submitted by a manufacturer as an extreme-pressure hypoid lubricant was found to be a ‘straight’ mineral oil when analyzed.

1963 Times 3 May 10/6 A four-speed, all synchromesh gearbox..incorporates the hypoid final drive.

1969 G. M. Mitchell Jowett Javelin, Jupiter 1947–53 Autobook vi. 65/1 For lubrication of this axle, hypoid lubricant only should be used.

B. n.

A hypoid gear.

ΘΚΠ

society > occupation and work > equipment > machine > parts of machines > wheel > [noun] > cog or gear > others

pinwheel1825

reducing gear1872

reduction gearing1891

slip-gear1897

hypoid1935

society > travel > means of travel > a conveyance > vehicle > powered vehicle > parts and equipment of motor vehicles > [noun] > transmission > shaft and joints transmitting drive > bevel gear

hypoid1935

1935 R. Trautschold Standard Gear Bk. ix. 144 Hypoids are machined in practically the same manner as spiral gears.

1962 D. W. Dudley Gear Handbk. ii. 12 Sufficient offset of the hypoid permits straddle mounting of the pinion and the gear.

This entry has not yet been fully updated (first published 1976; most recently modified version published online March 2022).

单词	hypoid
释义	hypoidadj.n. Brit. /ˈhʌɪpɔɪd/, U.S. /ˈhaɪˌpɔɪd/ Etymology: Said to be a contraction of hyperboloid or of hyperbolic paraboloid (in reference to the shape of the teeth on the wheel). Mechanics. A. adj. a. Applied to a kind of gear similar to a spiral bevel gear but having the pinion offset from the centre-line of the wheel, so that it can be used to connect shafts whose axes do not intersect; it is commonly employed in motor vehicles to transmit the power from the propeller shaft to the axle. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > wheel > [adjective] > types of cogs or gears sun-and-planet1796 spiral gearinga1877 chainless1897 planetary1904 epicyclic1906 hypoid1926 positraction1957 1926 Jrnl. Soc. Automotive Engin. June 575/1 Hypoid-gears are tapered gears having offset axes. 1935 Times 2 Oct. 6/5 The rear axle is fully-floating, and final drive is by hypoid spiral bevel gears. 1937 Jrnl. Applied Mech. 4 A-31 The behavior of lubricants in the region of boundary lubrication has become of added importance due to the recent adoption of hypoid gears in automobiles. 1941 F. D. Jones Engin. Encycl. I. 676 The chief advantages of hypoid gears are noiseless operation, increased load-carrying capacity, the possibility of high reduction and low numbers of teeth, long life, and high efficiency. 1969 K. Ball Rover 2000 1963–9 Autobook vii. 64/1 The unit contains a hypoid crownwheel and pinion for the final drive from the power input shaft to the half shafts. b. Suitable for or employing a hypoid gear. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > wheel > [adjective] > types of cogs or gears > employing hypoid1937 1937 S.A.E. Trans. (Soc. Automotive Engineers) 32 557/2 Six or seven months ago the lubrication of hypoid axles in the field was a much more serious problem than it is today. 1937 S.A.E. Trans. (Soc. Automotive Engineers) 32 563/1 One lubricant submitted by a manufacturer as an extreme-pressure hypoid lubricant was found to be a ‘straight’ mineral oil when analyzed. 1963 Times 3 May 10/6 A four-speed, all synchromesh gearbox..incorporates the hypoid final drive. 1969 G. M. Mitchell Jowett Javelin, Jupiter 1947–53 Autobook vi. 65/1 For lubrication of this axle, hypoid lubricant only should be used. B. n. A hypoid gear. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > wheel > [noun] > cog or gear > others pinwheel1825 reducing gear1872 reduction gearing1891 slip-gear1897 hypoid1935 society > travel > means of travel > a conveyance > vehicle > powered vehicle > parts and equipment of motor vehicles > [noun] > transmission > shaft and joints transmitting drive > bevel gear hypoid1935 1935 R. Trautschold Standard Gear Bk. ix. 144 Hypoids are machined in practically the same manner as spiral gears. 1962 D. W. Dudley Gear Handbk. ii. 12 Sufficient offset of the hypoid permits straddle mounting of the pinion and the gear. This entry has not yet been fully updated (first published 1976; most recently modified version published online March 2022). < adj.n.1926
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